WO2016114473A1 - Rf failure test circuit of mobile terminal and method therefor - Google Patents

Abstract

The present invention relates to a mobile terminal and, more particularly, to an RF failure test circuit of a mobile terminal, capable of measuring an RF failure of an antenna, and to a method therefor, the RF failure test circuit comprising: an antenna connected to a feed pad and a short pad; an antenna matching circuit for carrying out the impedance matching of the antenna; and an antenna contact test circuit connected between the antenna matching circuit and at least one of the feed pad and the short pad so as to test a contact failure between each pad and the antenna.

Description

RF bad test circuit of mobile terminal and method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal, and more particularly, to an RF failure test circuit and a method thereof for a mobile terminal capable of measuring RF failure of an antenna.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

Such a terminal has been implemented in the form of a multimedia device having a combination of functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Generally, unlike a design process of a mobile terminal (e.g., a smart phone), a radio frequency (RF) performance defect in a manufacturing process is mostly caused by poor connection of an antenna. In order to detect such RF performance defects, conventionally, power is applied to the assembled mobile terminal and a terminal set is put into a shield box connected to an expensive calibration device (eg, CMW 500) through a coupler (TX) and receiving (RX) performance of the antenna are measured and connected by connecting a call.

However, since the TX / RX performance of the antenna responds sensitively to the placement position of the shield box, it is difficult to consistently measure a slight change. In particular, when measuring the radio sensitivity to measure RX performance, it takes a long time to measure and drop the call, and it is confirmed that the BLER (Block Error Rate) is broken by inserting more than 5dB signal than the sensitivity level, Respectively. As a result, there is a problem that this method can not detect RX performance deterioration of less than 5 dB.

Therefore, the conventional method of measuring the RF defect based on the TX / RX performance has a disadvantage in that it is required to perform various steps using an expensive calibration device, and there are problems such as SMT (surface mounter technology) failure on the antenna matching circuit, The power unstable and calibration error of the trapsceiver can not be measured. Further, there is a disadvantage in that it is impossible to distinguish whether the feed part of the antenna is defective or the short part is defective when the connection failure of the antenna, which is one kind of RF defect, is detected based on the TX / RX performance.

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide an RF failure test circuit and a method thereof for a mobile terminal that can easily measure a contact failure of an antenna that may occur during a manufacturing process of a terminal.

It is another object of the present invention to provide an RF failure test circuit and a method thereof for a mobile terminal capable of discriminating an antenna failure based on a voltage level of a transmitting terminal of the antenna.

According to an aspect of the present invention, there is provided a mobile terminal including: an antenna connected to a feed pad and a short pad; An antenna matching circuit for performing impedance matching of the antenna; And an antenna contact test circuit connected between the antenna matching circuit, at least one of the feed pad and the short pad, for testing a contact failure between each pad and the antenna.

In one embodiment, the antenna contact test circuit comprises: a first testing portion connected between the feed pad and the antenna matching circuit; And a second testing unit connected between the shorting pad and the grounding point.

In one embodiment, the first testing portion includes at least one first resistor connected in parallel to a first RF line between the feed pad and the antenna matching circuit and at least one capacitor connected in series to the first RF line, The testing unit may include at least one second resistor connected in parallel to the second RF line between the short pad and the ground point, and at least one capacitor connected in series with the second RF line.

In one embodiment, the first resistor has a resistance value greater than the second resistance, and the capacitor may have the same capacitance.

In one embodiment, the mobile terminal may further include a metal portion for connection to a jig (JIG) for measuring the resistance of the antenna through an antenna contact test circuit.

According to an aspect of the present invention, there is provided an RF failure test circuit for a mobile terminal, comprising: an antenna connected to a feed pad and a short pad; A first testing unit connected between the feed pad and the antenna matching circuit; And a second testing unit connected between the shorting pad and the ground point, wherein the first testing unit includes at least one first resistor and at least one carcass sheath, and the second testing unit includes at least one second And may include a resistor and at least one carcass seater.

In one embodiment, the first resistor is connected in parallel to a first RF line between the feed pad and the antenna matching circuit, and the second resistor is connected in parallel to a second RF line between the short pad and the ground point, And may be serially connected to the first and second RF lines.

In one embodiment, the first and second resistors have different resistance values, and the first resistor has a resistance value larger than the second resistance.

According to an aspect of the present invention, there is provided a method for testing an RF failure of a mobile terminal, the method comprising: clamping an assembled terminal to a jig; Measuring a resistance value of the antenna feed portion and the short portion through a multimeter; Measuring a transmission power of an antenna using a high power sensing element; And measuring an RF defect of the antenna based on the measured resistance value of the feed portion and the short portion and the transmit power of the antenna.

In one embodiment, measuring the resistance value comprises: measuring a resistance value of a first testing portion connected between the antenna feed pad and the antenna matching circuit; And measuring a resistance value of a second testing unit connected between the antenna shortpads and a ground point.

In one embodiment, the resistance value of the first testing unit is set to be larger than the resistance value of the second testing unit.

In one embodiment, the step of measuring the failure of the antenna includes comparing a resistance value of the measured first and second testing parts with a reference value to determine a failure of the feed part or the short part; And comparing the level of the measured transmission power with a reference value to discriminate SMT (Surface Mounter Technology) failure of each antenna.

According to at least one of the embodiments of the present invention, an RF failure test of an antenna can be effectively performed by quickly and easily measuring a failure of an RF performance generated in a terminal manufacturing process.

According to at least one of the embodiments of the present invention, the present invention measures an RF defect test circuit of an antenna to measure a contact failure of a feed portion and a short portion of an antenna end, and measures RF transmission power of each antenna So that it is possible to quickly and simply measure the antenna contact failure and the SMT failure occurring in the terminal manufacturing process by using the low-cost equipment.

1 is a block diagram illustrating a mobile terminal according to the present invention;

FIG. 2A and FIG. 2B are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions. FIG.

3 is a configuration diagram of an RF failure test circuit according to the first embodiment of the present invention.

4 is a configuration diagram of an RF failure test circuit according to a second embodiment of the present invention;

5 is a rear assembled view of a mobile terminal;

6 is a view showing a connection structure of a terminal and a jig for measuring a contact failure of an antenna.

7 is an example of measuring the transmission power level of an antenna using HDET.

8 is a graph showing input / output characteristics of HDET.

9A and 9B are diagrams illustrating a concept of determining whether an antenna is defective based on a transmission power of a terminal.

10 is a diagram illustrating a resistance test performed for each of a plurality of antennas and transmission power measurement of an RF signal.

11 is an overall configuration diagram of an RF bad test apparatus according to an embodiment of the present invention.

12 is a flowchart showing an operation of testing RF failure of a mobile terminal according to an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which like or similar elements are denoted by the same or similar reference numerals, and redundant description thereof will be omitted. The suffix " module " and " part " for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

FIG. 1 is a block diagram for explaining a mobile terminal according to the present invention, and FIGS. 2A and 2B are conceptual diagrams showing an example of a mobile terminal according to the present invention, from different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, And the like. The components shown in FIG. 1 are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1 to operate an application program stored in the memory 170, or may operate at least two or more of the components in combination with each other.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the components listed above will be described in more detail with reference to FIG. 1 before explaining various embodiments implemented through the mobile terminal 100 as described above.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 is connected to the mobile terminal 100 and the wireless communication system through the wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And the other mobile terminal 100 (or the external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other mobile terminal 100 may be a wearable device (e.g., a smartwatch, a smart glass, etc.) capable of interchanging data with the mobile terminal 100 according to the present invention (smart glass), HMD (head mounted display)). The short range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. [ If the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the short- 114 to the wearable device. Therefore, the user of the wearable device can use the data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a telephone is received in the mobile terminal 100, the user performs a telephone conversation via the wearable device, or when a message is received in the mobile terminal 100, It is possible to check the message.

The position information module 115 is a module for obtaining the position (or current position) of the mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, it can acquire the position of the mobile terminal by using a signal transmitted from the GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, it can acquire the position of the mobile terminal based on information of a wireless access point (AP) that transmits or receives the wireless signal with the Wi-Fi module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, Or a plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the mobile terminal 100 may be arranged to have a matrix structure and various angles or foci may be provided to the mobile terminal 100 through the camera 121 having the matrix structure A plurality of pieces of image information can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user and when the information is inputted through the user input unit 123, the control unit 180 can control the operation of the mobile terminal 100 to correspond to the input information . The user input unit 123 may include a mechanical input means (or a mechanical key such as a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, And a touch key disposed on the touch panel. Meanwhile, the virtual key or the visual key can be displayed on a touch screen having various forms, for example, a graphic, a text, an icon, a video, As shown in FIG.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as " proximity touch & The act of actually touching an object on the screen is called a " contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor senses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, do.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors as described above can be used independently or in combination with each other to provide a short touch (long touch), a long touch (multi touch), a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

In addition, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM) A universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components. The power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

Referring to FIGS. 2A and 2B, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

2A and 2B, a display unit 151, a first sound output unit 152a, a proximity sensor 141, a light intensity sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a character or a number, an instruction in various modes, or a menu item that can be designated.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as the user input unit 123 (see FIG. 1). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily operated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 can be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera may be termed an 'array array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1) can be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

Next, a communication system that can be implemented through the mobile terminal 100 according to the present invention will be described.

First, the communication system may use different wireless interfaces and / or physical layers. For example, wireless interfaces that can be used by a communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA) ), Universal mobile telecommunication systems (UMTS) (in particular Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A)), Global System for Mobile Communications May be included.

Hereinafter, for the sake of convenience of description, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to all communication systems including an OFDM (Orthogonal Frequency Division Multiplexing) wireless communication system as well as a CDMA wireless communication system.

A CDMA wireless communication system includes at least one terminal 100, at least one base station (BS) (also referred to as a Node B or Evolved Node B), at least one Base Station Controllers (BSCs) , And a Mobile Switching Center (MSC). The MSC is configured to be coupled to a Public Switched Telephone Network (PSTN) and BSCs. The BSCs may be paired with the BS via a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL or xDSL. Thus, a plurality of BSCs may be included in a CDMA wireless communication system.

Each of the plurality of BSs may comprise at least one sector, and each sector may comprise an omnidirectional antenna or an antenna pointing to a particular direction of radial emission from the BS. In addition, each sector may include two or more antennas of various types. Each BS may be configured to support a plurality of frequency assignments, and a plurality of frequency assignments may each have a specific spectrum (e.g., 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency assignment may be referred to as a CDMA channel. The BS may be referred to as a base station transceiver subsystem (BTSs). In this case, one BSC and at least one BS may be collectively referred to as a 'base station'. The base station may also indicate a " cell site ". Alternatively, each of the plurality of sectors for a particular BS may be referred to as a plurality of cell sites.

A broadcast transmission unit (BT) transmits a broadcast signal to terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 1A is provided in the terminal 100 to receive a broadcast signal transmitted by the BT.

In addition, a Global Positioning System (GPS) may be associated with the CDMA wireless communication system to identify the location of the mobile terminal 100. The satellite aids in locating the mobile terminal 100. Useful location information may be obtained by two or more satellites. Here, the position of the mobile terminal 100 can be tracked using all the techniques capable of tracking the location as well as the GPS tracking technology. Also, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmission.

Hereinafter, embodiments related to a control method that can be implemented in a mobile terminal configured as above will be described with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Generally, the defects of the radio performance of the mobile terminal are mainly caused by poor connection or contact, and additionally, there are problems such as SMT (Surface Mounter Technology) on the antenna matching circuit, power instability of the transceiver And poor calibration. In addition, conventionally, attaching a resistor to an antenna tuning end has been contraindicated because of deterioration in sensitive radio performance.

Accordingly, the present invention quickly and easily measures the defects of RF performance generated in a terminal manufacturing process, and proposes an RF failure test circuit for an antenna which is independent of radio performance degradation.

To this end, the present invention provides a testing part having a resistance component at an antenna tuning end so that a tester such as a multi meter can easily perform an antenna contact failure, And more particularly, to a failure of at least one of a feed portion and a short portion or a ground portion of the antenna.

Further, in addition to the measurement of the antenna contact failure, the present invention further measures a level of the transmission power transmitted from the antenna and measures a defect of the RF element (eg, antenna), thereby measuring the SMT defect and the element defect .

3 is a configuration diagram of an RF failure test circuit according to the first embodiment of the present invention.

3, the antenna contact test circuit according to the present invention includes an antenna 10, first and second pads 20a and 20b that are in contact with (or connected to) the antenna 10, A first testing part 40 connected between the first pad 10a and the antenna matching circuit 30 and a second testing part 40 connected between the second pad 10b and the ground And a second testing unit 50 connected thereto.

The first and second pads 20a and 20b denote a feed pad and a short pad, respectively.

The antenna 10 is a PIFA (Planar Inverted-F Antenna) type antenna.

The first testing unit 40 includes at least one first resistor connected in parallel to the first RF line 11 between the first pad 20a and the antenna matching circuit 30 and at least one second resistor connected in series with the first RF line 11 And at least one first capacitor (C1).

The second testing unit 50 includes at least one second resistor connected in parallel to the second RF line 12 between the second pad 20b and a ground point and at least one second resistor connected in series with the second RF line 12 And a second capacitor C1.

The first and second resistors R1 and R2 have different resistance values.

The resistance value of the first resistor R1 is set to be larger than the resistance value of the second resistor R2.

The first and second capacitors C1 and C2 have the same capacitance.

A load resistor 14 may be connected between the second testing unit 50 and the ground point and an ESD circuit may be connected to the RF line 11 after the antenna matching circuit 30.

As a result of measurement of the transmission / reception performance due to the addition of the first and second testing units 40 and 50, it is proved that there is almost no difference between the transmission and reception performance.

4 is a configuration diagram of an RF failure test circuit according to the second embodiment of the present invention.

The antenna contact test circuit according to the present invention may selectively include the first and second testing portions 40 and 50 according to the type of the antenna 10. [ For this purpose, the control unit provided in the terminal can discriminate the type of the antenna 10, and can switch the configuration of the RF failure test circuit according to the determined antenna type. In an embodiment of the present invention, a switching unit (not shown) is provided between the antenna 10 and the first and second pads 20a and 20b, and the configuration of the RF failure test circuit Lt; / RTI >

The control unit controls the switching unit to configure the RF failure test circuit including only the first testing unit 40 when the antenna 10 is of the monopole type as a result of the determination of the antenna type, The RF failure test circuit including the first and second testing units 40 and 50 can be configured (see FIG. 3).

5 is a rear assembly view of the mobile terminal.

In order to measure an RF defect, the metal parts are exposed to the multimeter or jig connection to the antennas 1 to 6 after the terminal assembly, and the ground surface (GND) is exposed to the outside. In this state, the user measures the resistance (eg, DC resistance) between the ground plane and the connection point between the antennas 1 to 6 through the multimeter to check the contact failure between the feed section and the short section . In addition, after placing the assembled terminal on a jig (to be described later), it is possible to check the contact failure of the antenna by measuring the resistance between the ground plane and the contact points of the antennas 1 to 6.

The operation of the RF bad test circuit according to the embodiment of the present invention will be described below.

In the RF failure test circuit shown in FIG. 3, the resistances R1 and R2 of the first and second testing units 40 and 50 have a large resistance value such that the RF signal is open, and the capacitors C1, C2 serve to block direct current (DC). That is, the capacitors C1 and C2 block the direct current from being applied to the subsequent stage circuit (e.g., antenna matching circuit) so that only the values of the resistors R1 and R2 are measured. Since the resistors R1 and R2 have a large resistance value such that the RF signal can feel open, they have little influence on the RF performance.

In the present invention, the contact failure of the antenna can be measured by using an external multimeter or by using a jig. However, for convenience of explanation, a jig is used as an example.

6 shows a fastening structure of a terminal and a jig for measuring the contact failure of the antenna.

As shown in FIG. 6, an assembling terminal including a battery includes six internal antennas (1-6) and a GND (No. 7, USB utilization). The jig has a structure in which the assembled terminal can be seated. When the terminal is fastened to the jig, the metal part of each antenna is brought into contact with the jig. Therefore, since the resistance between the contact point of each of the antennas 1 to 6 and the ground (ground) is measured through the jig, the user can measure the resistance between the first pad (feed portion) 20a and the second pad (short portion) (Ground portion) can be confirmed.

The resistances R of the first and second testing portions 40 and 50 when the first and second pads 20a and 20b are in contact with each other are determined by the following Equation 1:

In one example, R is measured to be about 333K (?) When the first resistor R1 is 1M (?) And the second resistor R2 is 500K (?).

The measured resistance value R is close to R2 (500 K?) In the case where the first pad 20a has a poor contact, and the measured resistance value R when the second pad 20b is poorly contacted. Is measured at a value close to R1 (1 M?). Also, when the contact of the first and second pads 20a and 20b is bad, R is measured as zero.

Therefore, the present invention can discriminate the contact failure of the antenna by using a low-cost multimeter or a jig, and in particular, when the contact failure of the antenna is detected, it is possible to determine whether the fault is defective of the feed part or defective of the short part (ground part) Can be clearly distinguished.

As described above, the poor contact of the antenna that can occur during the production of the terminal can be easily determined by using the RF failure test circuit of the antenna. However, the SMT failure of the antenna that can occur during the terminal manufacturing process can not be determined by the RF failure test circuit alone.

Accordingly, the present invention proposes a method of measuring the antenna power level of an assembled terminal and additionally discriminating SMT defects and device defects.

The present invention uses HDET (High Power Detection) as an element capable of measuring the antenna power level, and the HDET is a device that measures the power level of an RF signal transmitted through an antenna and displays the measured power level.

FIG. 7 shows an example of measuring the transmission power level of the antenna using the HDET, and FIG. 8 is a graph showing the input / output characteristics of the HDET.

7, the HDET 20 is provided on one side of the jig 200, and is directly connected to the antenna. Therefore, the jig 200 using the HDET 20 is directly connected to the antenna 10 at the terminal end, and the terminal receives the transmission power of the RF signal transmitted through the antenna and outputs the voltage. Therefore, the voltage level can be measured based on the output of the HDET 20 using an external measuring instrument.

9A and 9B are diagrams illustrating a concept of determining whether an antenna is defective based on the transmission power of a terminal.

As shown in FIG. 5, after the assembly terminal is inserted into the jig 200, the jig 200 is operated to sequentially transmit RF signals of predetermined levels through the respective antennas. At this time, the HDET 20 connected to the antenna measures the transmission power of the RF signal and outputs a voltage, and the measured voltage is finally input to a diagnostic device (e.g., PC) through an external voltage level measuring device. Therefore, the diagnostic apparatus compares the voltage measurement level of each antenna band with the voltage level measured through the HDET 20 to determine whether each antenna is defective, as shown in FIGS. 9A and 9B.

Therefore, the present invention can measure the RF defect of the antenna more accurately by measuring the transmission power of the RF signal of each antenna using the HDET 20 and measuring the SMT failure of the antenna.

FIG. 10 shows a resistance test performed for each of a plurality of antennas and transmission power measurement of an RF signal.

Referring to FIG. 10, a plurality of antennas ANT 1 to ANT 6 provided in a terminal may be divided into a transmitting antenna, a receiving antenna, and a transmitting / receiving antenna. Therefore, although the resistance measurement through the antenna contact measurement circuit is applicable to all the antennas, the transmission power measurement of the RF signal using the HDET is not limited to the antenna for receiving the RX signal (eg, ANT 1, ANT 2, ANT 6).

Therefore, in the present invention, the RF failure of the antenna can be judged comprehensively considering both the contact failure of the antenna and the poor surface mount (SMT) defect in the diagnostic device after simultaneously performing the resistance test and the transmission power measurement of the RF signal.

11 is an overall configuration diagram of an RF failure test apparatus according to an embodiment of the present invention.

Referring to FIG. 11, the RF failure test apparatus includes a mobile terminal 100 having an antenna contact test circuit, a mobile terminal coupled thereto, a resistance of each antenna stage is measured through the test circuit, A jig 200 for measuring the transmission power of the antenna, a DC meter 300 for converting the transmission power measured at the jig into a voltage level, and an RF failure of the antenna based on the resistance and transmission power of each antenna stage And a diagnosing device 400 for discriminating between them.

The jig 300 may include a multi-meter and an HDET.

The DCM 300 is connected to the HDET through a GPIB (General Purpose Interface Bus), and the multimeter can be connected to a diagnostic device via a universal serial bus (USB).

12 is a flowchart illustrating an RF failure test operation of a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 12, in order to measure an RF defect of the antenna, a plurality of assembled terminals 100 are fastened to the jig 200 (S100). The plurality of jigs 200 to which the terminal is fastened are connected to a diagnosis device (e. G., PC) 4000.

Then, the PID of the terminal is recognized using a QR scanner (not shown) provided in the jig 200 (S110). Then, in order to measure the contact failure of each antenna, Measure the resistance value. At the same time, the transmission power of each antenna is measured using the HDET 20 of the jig 200 (S120).

The measured resistances of the feed and short sections are input to the diagnostic apparatus 400 through the USB, and the transmission power of each antenna is converted into a voltage level in the DC meter 300 and input to the diagnostic apparatus 400.

Therefore, the diagnostic apparatus 400 of the present invention compares the resistance value of the feed section and the short section measured in the RF badness test circuit with a predetermined reference value to discriminate the poor contact of each antenna, the failure of the feed section and the short section, And determines the SMT failure and power instability of each antenna by comparing the measured voltage level with a preset reference value. The determined RF failure of each antenna may be stored in the diagnostic apparatus 400.

As described above, according to the present invention, the RF failure test circuit and the diagnostic apparatus are used to measure the contact failure of the feed section and the short section of the antenna end, and the RF transmission power of each antenna is measured using the HDET, Thus, there is an advantage that it is possible to quickly and simply measure the antenna contact failure and the SMT failure generated in the terminal manufacturing process by using the simple and low-cost equipment.

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). Also, the computer may include a control unit 180 of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (18)

1. An antenna connected to the feed pad and the short pad;

   An antenna matching circuit for performing impedance matching of the antenna; And

   And an antenna contact test circuit connected between the antenna matching circuit and at least one of the feed pad and the short pad to test a contact failure between each pad and the antenna.
2. The antenna of claim 1, wherein the antenna

   And a PIFA (Planar Inverted-F Antenna) type or mono type antenna.
3. 2. The apparatus of claim 1, wherein the antenna contact test circuit

   A first testing unit connected between the feed pad and the antenna matching circuit; And

   And a second testing unit connected between the shorting pad and the grounding point.
4. 4. The apparatus of claim 3, wherein the first testing unit

   At least one first resistor connected in parallel to a first RF line between the feed pad and the antenna matching circuit and at least one capacitor serially connected to the first RF line,

   Wherein the second testing unit comprises at least one second resistor connected in parallel to a second RF line between the shorting pad and the ground point and at least one capacitor connected in series to the second RF line.
5. 5. The method of claim 4, wherein the first and second resistors

   And has different resistance values.
6. 5. The method of claim 4, wherein the first resistor

   Wherein the first capacitor has a resistance value greater than the second resistance, and the capacitor has the same capacitance.
7. 2. The apparatus of claim 1, wherein the antenna contact test circuit

   And a testing unit connected between the feed pad and the antenna matching circuit.
8. 8. The apparatus of claim 7, wherein the first testing unit

   And at least one capacitor connected in series to the RF line and at least one resistor connected in parallel to the RF line between the feed pad and the antenna matching circuit.
9. The apparatus of claim 1, further comprising: a jig (JIG) measuring the resistance of the antenna through the antenna contact test circuit and measuring the transmit power of the antenna through the power measurement element; And

   And a diagnostic device for determining an RF failure of the antenna based on the resistance and transmission power of each antenna measured in the jig.
10. 8. The apparatus of claim 7, wherein the jig

    A multimeter for measuring resistance values of the first and second resistors in the first and second testing units; And

    And a high power sensing element connected directly to the antenna and measuring the power of the RF signal transmitted from the antenna.
11. An antenna connected to the feed pad and the short pad;

    A first testing unit connected between the feed pad and the antenna matching circuit; And

    And a second testing unit connected between the short pad and the ground point,

    The first testing unit

    At least one first resistor and at least one carcass seator,

    Wherein the second testing unit comprises at least one second resistor and at least one carcass sheath.
12. 12. The method of claim 11, wherein the first resistor

    Connected in parallel to a first RF line between the feed pad and the antenna matching circuit,

    The second resistor is connected in parallel to a second RF line between the short pad and the ground point,

    And the capacitors are serially connected to the first and second RF lines, respectively.
13. 12. The method of claim 11, wherein the first and second resistors

    Wherein the RF resistance test circuit has different resistance values.
14. 12. The method of claim 11, wherein the first resistor

    And has a resistance value larger than that of the second resistor.
15. Tightening the assembled terminal to the jig;

    Measuring a resistance value of the antenna feed portion and the short portion through a multimeter;

    Measuring a transmission power of an antenna using a high power sensing element; And

    And measuring an RF defect of the antenna based on the measured resistance values of the feed and short portions and the transmit power of the antenna.
16. 16. The method of claim 15, wherein measuring the resistance comprises:

    Measuring a resistance value of a first testing unit connected between the antenna feed pad and the antenna matching circuit; And

    And measuring a resistance value of a second testing unit connected between the antenna short-circuit pad and the grounding point.
17. 17. The method of claim 16, wherein the resistance value of the first testing portion

    Wherein the resistance value of the second testing unit is larger than the resistance value of the second testing unit.
18. 17. The method of claim 16, wherein measuring the failure of the antenna

    Comparing the measured resistance value of the first and second testing units with a reference value to determine a failure of the feed unit or the shorting unit; And

    And comparing the level of the measured transmission power with a reference value to discriminate SMT (Surface Mounter Technology) failure of each antenna.

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