CN203774453U - Mobile phone and antenna thereof - Google Patents

Abstract

The utility model is applicable to the field of mobile terminals. The utility model provides a mobile phone and its antenna, including: a first antenna radiator, a second antenna radiator, a third antenna radiator, a feeder terminal, a metal ground of the whole machine and a collector The total parameter element; the first end of the first antenna radiator is connected to the feeding end; a gap is formed between the first end of the second antenna radiator and the first end of the third antenna radiator; One or more Lumped parameter element connections. The overall structure of the antenna provided by the utility model is simple, which is convenient for production and manufacture, and at the same time realizes the miniaturization of the volume and size of the antenna.

Description

A mobile phone and its antenna

technical field

The utility model belongs to the field of mobile terminals, in particular to a mobile phone and an antenna thereof.

Background technique

With the advent of the 4G era, LTE (Long Term Evolution, long-term evolution) is no longer a concept but a trend. Due to the increase in 4G bandwidth, the requirements for antennas of mobile terminals (such as mobile phones) are also significantly higher than those of 3G. improvement. At present, the implementation of 4G antennas generally adopts the method of increasing the antenna clearance area on the basis of 3G, including directly increasing the antenna clearance area or using metal frames to increase the clearance area in disguise, and the increase of the antenna clearance area will make the antenna The volume and size of the mobile terminal increase, which will inevitably cause the size and shape of the mobile terminal to change, making it impossible for the mobile terminal to be miniaturized and thinned.

Utility model content

The purpose of this utility model is to provide an antenna to solve the defect in the prior art that the volume and size of the antenna cannot be miniaturized by using a metal frame to increase the clearance area in a disguised form in order to increase the frequency coverage.

The utility model is achieved in this way, an antenna, which includes: a first antenna radiator, a second antenna radiator, a third antenna radiator, a feeder end, a metal ground of the whole machine and a lumped parameter element;

The first end of the first antenna radiator is connected to the feeding end;

A gap is formed between the first end of the second antenna radiator and the first end of the third antenna radiator;

The second end of the first antenna radiator is connected to the second end of the second antenna radiator through one or more lumped parameter elements;

The second end of the third antenna radiator is connected to the metal ground of the whole machine or the second end of the third antenna radiator is connected to the metal ground of the whole machine through one or more lumped parameter elements .

The lumped parametric element between the second end of the first antenna radiator and the second end of the second antenna radiator is capacitance, inductance or resistance.

A lumped parameter element between the second end of the third antenna radiator and the metal ground of the whole machine is a resistor.

The resistor includes a first resistor and a second resistor, the third antenna radiator includes a first branch and a second branch, the first branch is connected to the first end of the first resistor, the The second end of the first resistor is connected to the metal ground of the whole machine, the second branch is connected to the first end of the second resistor, and the second end of the second resistor is connected to the metal ground of the whole machine.

Preferably, the resistance of the first resistor is 0Ω.

The first antenna radiator, the second antenna radiator and the third antenna radiator are distributed on the support, the PCB board, the housing or the surface of the touch screen.

The antenna further includes an antenna matching network, and the antenna matching network is arranged between the first antenna radiator and the feeding end.

It also includes a metal body of the whole machine and an electrical connector, the metal body of the whole machine is connected to the metal ground of the whole machine through the connector, and the number of the electrical connectors is one or more.

Another object of the present invention is to provide a mobile phone with the above-mentioned antenna built in it.

The antenna provided by the utility model sets lumped parameter elements between the antenna radiator and between the antenna radiator and the metal ground of the whole machine, so that the feed end, the antenna radiator, the lumped parameter element and the metal ground of the whole machine An antenna loop is formed to increase the frequency range covered by the antenna, and the overall structure of the antenna is simple, which is convenient for manufacturing, and at the same time realizes the miniaturization of the volume and size of the antenna.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic structural diagram of an antenna provided by an embodiment of the present invention;

Fig. 2 is a specific connection schematic diagram of an antenna provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

In order to illustrate the technical solution described in the utility model, the following specific examples will be used for illustration.

An antenna provided by an embodiment of the present invention includes: a first antenna radiator, a second antenna radiator, a third antenna radiator, a feeding end, a metal ground of the whole machine, and a lumped parameter element.

The first end of the first antenna radiator is connected to the feeding end, and a gap is formed between the first end of the second antenna radiator and the first end of the third antenna radiator.

The second end of the first antenna radiator is connected to the second end of the second antenna radiator through one or more lumped parameter elements.

The second end of the third antenna radiator is connected to the metal ground of the whole machine or the second end of the third antenna radiator is connected to the metal ground of the whole machine through one or more lumped parameter elements .

Wherein, the feed end is used to provide signals, and the metal ground of the whole machine is used as an arm of antenna radiation to receive signals provided by the feed end.

Wherein, the lumped parameter element refers to each element having two terminals, and the current flowing in from one terminal is equal to the current flowing out from the other terminal. There are three basic ideal circuit components: the ideal resistive element R that consumes electric energy; the ideal capacitive element C that stores electric field energy; the ideal inductive element L that stores magnetic field energy. When the wavelength is used, the functions of the components can be aggregated together and described by one or a limited number of resistor R, inductor L, and capacitor C components. Thus, lumped parametric elements include resistive R, inductive L or capacitive C elements.

Wherein, a gap is provided between the first antenna radiator and the second antenna radiator, that is, signals are transmitted between the first antenna radiator and the second antenna radiator through spatial coupling.

Further, the lumped parameter element between the second end of the first antenna radiator and the second end of the second antenna radiator is a capacitor, an inductor or a resistor.

Specifically, the capacitance, inductance or resistance is one or more.

It should be noted that the lumped parameter element between the second end of the first antenna radiator and the second end of the second antenna radiator may also be a different combination of inductance, resistance and capacitance, for example , an inductive circuit composed of an inductor and a capacitor, and so on.

Further, the lumped parameter element between the second end of the third antenna radiator and the overall metal ground is a resistor.

Specifically, there are one or more resistors.

It should be noted that, the lumped parameter element between the second end of the third antenna radiator and the metal ground of the whole machine may also be an inductance or a capacitance or a different combination of inductance, resistance and capacitance, for example, An inductive circuit composed of an inductor and a capacitor, etc.

Further, the antenna further includes an antenna matching circuit. There may be multiple antenna matching circuits, and the antenna matching circuit may be located at any connection position between the antenna and the feed end and between the antenna and the metal ground of the whole machine.

Further, the first antenna radiator, the second antenna radiator and the third antenna radiator are distributed on the support, the PCB board, the housing or the surface of the touch screen.

The following is a specific example to illustrate the embodiment of the present invention, wherein, the lumped parameter element between the second end of the first antenna radiator and the second end of the second antenna radiator is a capacitor, and the The lumped parameter elements between the second end of the third antenna radiator and the metal ground of the whole machine are two resistors.

Specifically, please refer to FIG. 1 and FIG. 2. The antenna includes: a first antenna radiator 30, a second antenna radiator 32, a third antenna radiator 31, a feed terminal E1, a metal ground 11 of the whole machine, and a lumped Parameter elements; the first end of the first antenna radiator 30 is connected to the feed end E1; a gap is formed between the first end of the second antenna radiator 32 and the first end of the third antenna radiator 31; the first antenna radiation A capacitor C is provided between the second end of the body 30 and the second end of the second antenna radiator 32 , and two resistors are provided between the second end of the third antenna radiator 31 and the metal ground 11 of the whole machine.

The resistors include a first resistor R1 and a second resistor R2. The third antenna radiator 31 includes a first branch 41 and a second branch 42. The first branch 41 is connected to the first end of the first resistor R1. The second end of a resistor R1 is connected to the metal ground 11 of the whole machine, the second branch 42 is connected to the first end of the second resistor R2 , and the second end of the second resistor R2 is connected to the metal ground 11 of the whole machine.

Specifically, the value of the capacitor C is 1.5pF, the resistance value of the first resistor R1 is 0Ω, and the resistance value of the second resistor R2 is 20Ω.

The antenna further includes an antenna matching network 33, and the antenna matching network 33 is arranged between the first antenna radiator 30 and the feeding end E1.

The antenna further includes a whole metal body 12 and an electrical connector 51 , the whole metal body 12 is connected to the whole metal ground 11 through the connector 51 , and the number of the electrical connector 51 is one.

The specific working process of the embodiment of the utility model is as follows: the signal is stimulated by the feeder end E1, and then passes through the matching antenna matching network 33, the first antenna radiator 30, the capacitor C, the second antenna radiator 32, and the third antenna radiator 31 And the first resistor R1 and the second resistor R2 finally enter the metal ground 11 of the whole machine to form an antenna loop. The antenna in this example can cover 1500MHz-2690MHz, and its 3D efficiency tested in the ETS darkroom meets the communication requirements.

The built-in antenna of the mobile phone provided by the embodiment of the utility model sets the lumped parameter element between the antenna radiator and between the antenna radiator and the metal ground of the whole machine, so that the feed terminal, the antenna radiator, the lumped parameter element and The antenna loop is formed by the metal of the whole machine, which increases the frequency range covered by the antenna, and the overall structure of the antenna is simple, which is convenient for manufacturing, and at the same time realizes the miniaturization of the volume and size of the antenna.

The antenna provided by the embodiment of the utility model can maximize the performance of the antenna in a limited antenna environment, and can realize the spatial multiplexing of multiple frequency bands with far different frequencies on the same antenna, which can be applied to the current 3G In the plan of upgrading the mobile phone to 4G in the antenna environment. This solution can meet GSM, GPS, DCS, PCS, WCDMA, CDMA, EVDO, TD-SCDMA, TD-LTE, BLUETOOTH, WIMAX2.5, IMT-ADVANCED, WLAN5.2, WIMAX5.8 and other standards.

The embodiment of the utility model also provides a mobile phone with the above-mentioned antenna built in it. For mobile phones with built-in antennas, the above-mentioned antennas have the advantages of miniaturization in volume and size, so the bandwidth of the LTE antenna can be expanded without changing the overall structure of the mobile phone, and at the same time, the appearance of the whole machine is not affected.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, those who make several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and have the same performance or use, should be deemed to belong to the utility model submitted by the The scope of patent protection determined by the claims.

Claims (9)

1. an antenna, is characterized in that, comprising: the first antenna radiator, the second antenna radiator, third antenna radiant body, feed end, complete machine metal ground and lumped-parameter element;

The first end of described the first antenna radiator is connected with feed end;

Between the first end of the first end of described the second antenna radiator and described third antenna radiant body, form gap;

Between the second end of described the first antenna radiator and the second end of described the second antenna radiator, be connected by one or more lumped-parameter elements;

The second end of described third antenna radiant body be connected with described complete machine metal ground or the second end of described third antenna radiant body and described complete machine metal ground between be connected by one or more lumped-parameter elements.

2. antenna as claimed in claim 1, is characterized in that, the lumped-parameter element between the second end of described the first antenna radiator and the second end of described the second antenna radiator is electric capacity, inductance or resistance.

3. antenna as claimed in claim 1, is characterized in that, the lumped-parameter element between the second end of described third antenna radiant body and described complete machine metal ground is resistance.

4. antenna as claimed in claim 3, it is characterized in that, described resistance comprises the first resistance and the second resistance, described third antenna radiant body comprises the first branch road and the second branch road, described the first branch road is connected with the first end of described the first resistance, the second end of described the first resistance connects described complete machine metal ground, and described the second branch road is connected with the first end of described the second resistance, and the second end of described the second resistance connects described complete machine metal ground.

5. antenna as claimed in claim 4, is characterized in that, the resistance of described the first resistance is 0 Ω.

6. antenna as claimed in claim 1, is characterized in that, described the first antenna radiator, described the second antenna radiator and described third antenna radiant body are distributed in support, pcb board, housing or touch screen surface.

7. antenna as claimed in claim 1, is characterized in that, also comprises antenna matching network, and described antenna matching network is arranged between described the first antenna radiator and described feed end.

8. antenna as claimed in claim 1, is characterized in that, also comprises complete machine metallic object and electrical connector, and described complete machine metallic object is connected with described complete machine metal ground by described connector, and the quantity of described electrical connector is one or more.

9. a mobile phone, is characterized in that, described mobile phone comprises the antenna as described in claim 1-8 any one.