CN106549691A - Select the method and terminal of antenna - Google Patents

Abstract

The embodiment of the present invention discloses a method for selecting an antenna. The first antenna and the second antenna are set on the terminal. The method includes: receiving a specific signal acquired by the first antenna; determining the specific signal according to the specific signal A type of a specific signal; selecting a corresponding antenna according to the type of the specific signal. The embodiment of the invention also discloses a terminal for selecting an antenna.

Description

Method and terminal for selecting antenna

technical field

The present invention relates to the technical field of antennas, in particular to a method for selecting an antenna and a terminal.

Background technique

An antenna is a device that uses frequency characteristics to receive and transmit signals. In recent years, with the development of wireless terminals and communication technologies, Near Field Communication (NFC) and wireless charging technologies, especially those proposed by the Wireless Charging Alliance The Qi standard has been researched and applied more and more.

With the development of terminal technology, the performance is becoming more and more complete, but the space requirements are becoming more and more stringent. The terminal space has become a relatively scarce resource. In the existing technology, part of the wireless charging antenna is often used as NFC Antenna to achieve the purpose of saving space, but such a setting will make it difficult to adjust the inductance value of the NFC antenna, and the wireless charging signal and the NFC signal interfere with each other, affecting performance.

Contents of the invention

In view of this, the embodiments of the present invention expect to provide a method and a terminal for selecting an antenna, so as to realize easy adjustment of the inductance value of the NFC antenna, reduce mutual interference between wireless charging signals and NFC signals, and improve performance.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

The present invention provides a method for selecting an antenna. The first antenna and the second antenna are set on a terminal, and the method includes:

receiving a specific signal acquired by the first antenna;

determining the type of the specific signal according to the specific signal;

Select a corresponding antenna according to the type of the specific signal.

In the above method, the selection of the corresponding antenna according to the type of the specific signal includes:

When the specific signal is an NFC signal type, electrically connecting the first antenna and the second antenna to form a third antenna.

In the above method, the selection of the corresponding antenna according to the type of the specific signal includes:

When the specific signal is a wireless charging signal type, the first antenna is electrically connected to a wireless charging circuit.

In the above method, the electrically connecting the first antenna and the second antenna to form a third antenna includes:

The first antenna and the second antenna are electrically connected in parallel to form a third antenna.

In the above method, the determining the type of the specific signal according to the specific signal includes:

The type of the specific signal is determined according to the signal frequency carried in the specific signal and the initialization packet header.

In the above method, determining the type of the specific signal according to the signal frequency carried in the specific signal and the initialization packet header includes:

Detecting the signal frequency and initialization packet header carried in the specific signal, if the signal frequency is between 200KHz and 1MHZ, and the initialization packet header conforms to the wireless charging signal standard, then determine that the specific signal is a wireless charging signal type;

If the signal frequency is 13.56MHz and the initialization packet header conforms to the NFC signal standard, then determine that the specific signal is an NFC signal type;

If the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.

The present invention also provides a terminal for selecting an antenna, including: a first antenna module and a second antenna module arranged on the terminal, and also includes:

a receiving module, configured to receive the specific signal acquired by the first antenna module;

a determining module, configured to determine the type of the specific signal according to the specific signal;

A selection module, configured to select a corresponding antenna according to the type of the specific signal.

In the above terminal, the selection module is specifically configured to electrically connect the first antenna module and the second antenna module to form a third antenna module when the specific signal is an NFC signal type;

The terminal further includes: an NFC module, configured to perform NFC communication through the third antenna module.

In the above terminal, the terminal further includes: a wireless charging circuit module;

The selection module is further specifically configured to electrically connect the first antenna module to the wireless charging circuit module when the specific signal is a wireless charging signal type;

The wireless charging circuit module is used for performing wireless charging through the first antenna module.

In the above terminal, the selection module is further specifically configured to form a third antenna module by electrically connecting the first antenna module and the second antenna module in parallel.

In the above terminal, the determining module is specifically configured to determine the type of the specific signal according to the signal frequency carried in the specific signal and the initialization packet header.

In the above-mentioned terminal, the determination module is further specifically configured to detect the signal frequency and the initialization packet header carried in the specific signal, if the signal frequency is between 200KHz and 1MHZ, and the initialization packet header complies with the wireless charging signal standard, Then it is determined that the specific signal is a wireless charging signal type;

If the signal frequency is 13.56MHz and the initialization packet header conforms to the NFC signal standard, then determine that the specific signal is an NFC signal type;

If the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.

In the antenna selection method and terminal provided by the embodiments of the present invention, by setting a first antenna (main antenna) and a second antenna (auxiliary antenna) on the terminal, the terminal first uses the first antenna to receive a specific signal, wherein the specific signal includes wireless charging signal and/or NFC signal; secondly, determine the type of the specific signal according to the specific signal, and when the specific signal is a wireless charging signal type, electrically connect the first antenna to the wireless charging circuit through the selection unit, Realize the function of wireless charging; when the specific signal is an NFC signal, the first antenna and the second antenna are electrically connected in parallel to form a third antenna (NFC antenna) through the selection unit, and the third antenna is used to receive the NFC signal , to realize the function of NFC; in the embodiment of the present invention, the first antenna and the second antenna are combined in parallel to form the third antenna through the selection unit in the terminal, so that the inductance value of the third antenna meets the requirements of NFC, so that no Adjust the wiring length to realize the change of the inductance value, making the inductance value easier to adjust; at the same time, the hardware ensures that the signal lines of the first antenna and the second antenna are parallel, the excitation current is the same direction current, and there is still a gap between the first antenna and the second antenna. Mutual inductance can be generated, and the size of the mutual inductance is related to the relative position and distance between the first antenna and the second antenna. The mutual inductance and the inductance of the first antenna and the second antenna are positively superimposed, which not only reduces the wireless charging signal and NFC signal Interference between each other also enhances the magnetic induction intensity of the NFC antenna, and can also increase the communication distance and sensing area of NFC near-field communication, improving performance.

Description of drawings

Fig. 1 is the flowchart of the method embodiment of selecting antenna of the present invention;

FIG. 2 is a schematic structural diagram of a terminal embodiment for selecting an antenna according to the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Fig. 1 is the flow chart of the method embodiment of selecting antenna of the present invention, as shown in Fig. 1, this method comprises the following steps:

Step 101. Receive a specific signal acquired by the first antenna.

First, the terminal is provided with a first antenna and a second antenna, and the first antenna and the second antenna may be provided on the back cover of the terminal or other parts, which are not limited here; wherein, the first antenna is the main antenna and may be Receive wireless charging signals and NFC signals, and can perform wireless charging work, but cannot perform NFC work; the second antenna is an auxiliary antenna, and the first antenna and the second antenna are combined to form a third antenna, and the third antenna is an NFC antenna. It can be used for NFC work; what needs to be explained here is that the type and size of the first antenna and the second antenna can be set according to actual needs, and are not limited here.

In this step, the terminal receives the specific signal acquired by the first antenna, where the specific signal includes a wireless charging signal and/or an NFC signal.

In addition, the terminal can be implemented in various forms, for example, the terminal described in the embodiment of the present invention can include such as: mobile phone, smart phone, notebook computer, digital broadcast receiver, personal digital assistant (PDA), tablet computer (PAD ), portable multimedia players (PMP), navigation devices, etc. mobile terminals.

Step 102. Determine the type of the specific signal according to the specific signal.

In this step, the terminal determines the type of the specific signal according to the received specific signal, and the type of the specific signal includes a wireless charging signal type or an NFC signal type.

Specifically, the terminal determines the type of the specific signal according to the signal frequency and initialization packet header carried in the specific signal; the terminal detects the signal frequency and initialization packet header carried in the specific signal, if the signal frequency is between 200KHz and Between 1MHZ and the initialization packet header conforms to the wireless charging signal standard (01XXXXXX), then it is determined that the specific signal is a wireless charging signal type; if the signal frequency is around 13.56MHz or 13.56MHz, and the initialization packet header conforms to NFC signal standard (10XXXXXX), then it is determined that the specific signal is an NFC signal type;

If the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.

Step 103. Select a corresponding antenna according to the type of the specific signal.

In this step, the corresponding antenna is selected according to the type of the specific signal, wherein the optional antenna can be the first antenna or the third antenna composed of the first antenna and the second antenna electrically connected; specifically, when the specific signal When it is a wireless charging signal type, execute step 104; when the specific signal is an NFC signal type, execute step 105.

Step 104, when the specific signal is a wireless charging signal type, electrically connect the first antenna to a wireless charging circuit, and perform wireless charging through the first antenna.

After the terminal determines that the specific signal is a wireless charging signal type, it will electrically connect the first antenna (main antenna) set on the terminal to the wireless charging circuit through the selection unit, and the wireless charging circuit acquired by the first antenna (main antenna) The charging signal is converted into electrical energy through the wireless charging circuit for charging the battery of the terminal.

Step 105. When the specific signal is an NFC signal, electrically connect the first antenna to the second antenna to form a third antenna.

After the terminal determines that the specific signal is an NFC signal type, it will electrically connect the first antenna (main antenna) line set on the terminal to the second antenna (auxiliary antenna) in parallel through the selection unit to form a third antenna (NFC antenna) .

The wireless charging antenna generally requires an inductance value of 12 μH, and the NFC antenna generally requires an inductance value of about 1 μH. Therefore, in this embodiment, the first antenna (main antenna) is a standard wireless charging coil with an inductance value of 12 μH. The second antenna (auxiliary The existence of the antenna) is mainly to be electrically connected in parallel with the first antenna (main antenna) to form a third antenna (NFC antenna), and the inductance value of the third antenna is adjusted by connecting the first antenna and the second antenna in parallel through the selection unit to about 1μH, so that there is no need to adjust the wiring length to realize the change of the inductance value, making the inductance value easier to adjust; at the same time, the hardware ensures that the signal lines of the first antenna and the second antenna are parallel, and the excitation current is in the same direction. Mutual inductance can also be generated between the antenna and the second antenna. The size of the mutual inductance is related to the relative position and distance between the first antenna and the second antenna. The mutual inductance and the inductance of the first antenna and the second antenna are positively superimposed, which not only reduces the The mutual interference between the wireless charging signal and the NFC signal is reduced, and the magnetic induction intensity of the NFC antenna is also enhanced. At the same time, the communication distance and the sensing area of the NFC near-field communication can be increased, and the performance is improved.

Step 106, perform NFC communication through the third antenna.

After the terminal connects the first antenna and the second antenna in parallel to form the third antenna through the selection unit, since the second antenna is electrically connected to the NFC circuit in advance, the terminal can use the third antenna to obtain the NFC signal and pass the NFC circuit to complete the information. interact.

In the method for wireless charging and short-range wireless communication NFC shared antenna provided by the embodiment of the present invention, the first antenna and the second antenna are combined in parallel to form the third antenna through the selection unit in the terminal, so that the inductance value of the third antenna meets the requirements of NFC. Requirements, so that there is no need to adjust the wiring length to realize the change of the inductance value, making the inductance value easier to adjust; at the same time, the hardware ensures that the signal lines of the first antenna and the second antenna are parallel, the excitation current is the same direction current, the first antenna and the second antenna Mutual inductance can also be generated between the second antennas. The size of the mutual inductance is related to the relative position and distance between the first antenna and the second antenna. The mutual inductance and the inductance of the first antenna and the second antenna are positively superimposed, which not only reduces the The mutual interference between the wireless charging signal and the NFC signal also enhances the magnetic induction of the NFC antenna, and at the same time increases the communication distance and sensing area of the NFC near-field communication, improving performance.

FIG. 2 is a schematic structural diagram of an embodiment of a terminal for selecting an antenna according to the present invention. As shown in FIG. 2 , the terminal 02 for selecting an antenna may include: a first antenna module 021 and a second antenna module 022 arranged on the terminal 02, Receiving module 023, determining module 024, selecting module 025; wherein,

The receiving module 023 is configured to receive the specific signal acquired by the first antenna module 021;

The determining module 024 is configured to determine the type of the specific signal according to the specific signal;

The selection module 025 is configured to select a corresponding antenna according to the type of the specific signal.

Further, the selection module 025 is specifically configured to electrically connect the first antenna module 021 and the second antenna module 022 to form a third antenna module 027 when the specific signal is an NFC signal type;

The terminal further includes: an NFC module 026, configured to perform NFC communication through the third antenna module 027.

Further, the terminal further includes: a wireless charging circuit module 028;

The selection module 025 is also specifically configured to electrically connect the first antenna module 021 to the wireless charging circuit module 028 when the specific signal is a wireless charging signal type;

The wireless charging circuit module 028 is configured to perform wireless charging through the first antenna module 021 .

Further, the selection module 025 is also specifically configured to form the third antenna module 027 by electrically connecting the first antenna module 021 and the second antenna module 022 in parallel.

Further, the determining module 024 is specifically configured to determine the type of the specific signal according to the signal frequency carried in the specific signal and the initialization packet header.

Further, the determination module 024 is also specifically configured to detect the signal frequency and initialization packet header carried in the specific signal, if the signal frequency is between 200KHz and 1MHZ, and the initialization packet header complies with the wireless charging signal standard, Then it is determined that the specific signal is a wireless charging signal type;

If the signal frequency is 13.56MHz and the initialization packet header conforms to the NFC signal standard, then determine that the specific signal is an NFC signal type;

If the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.

The terminal in this embodiment can be used to implement the technical solution of the above-mentioned method embodiment, and its implementation principle and technical effect are similar, and will not be repeated here.

In practical applications, the receiving module 023, the determining module 024, the selecting module 025, the NFC module 026, and the wireless charging circuit module 028 can be composed of a central processing unit (CPU), a microprocessor (MPU), a digital signal processing device (DSP) or field-programmable gate array (FPGA) and other devices to achieve.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (12)

1. A method of selecting antennas, a first antenna and a second antenna being disposed on a terminal, the method comprising:

receiving a specific signal acquired by the first antenna;

determining a type of the specific signal according to the specific signal;

and selecting a corresponding antenna according to the type of the specific signal.

2. The method of claim 1, wherein selecting the corresponding antenna according to the type of the specific signal comprises:

and when the specific signal is of an NFC signal type, the first antenna and the second antenna are electrically connected to form a third antenna.

3. The method of claim 1, wherein selecting the corresponding antenna according to the type of the specific signal comprises:

and when the specific signal is of a wireless charging signal type, the first antenna is electrically connected with a wireless charging circuit.

4. The method of claim 2, wherein electrically connecting the first antenna and the second antenna to form a third antenna comprises:

and forming a third antenna by electrically connecting the first antenna and the second antenna in parallel.

5. The method according to any one of claims 1 to 4, wherein the determining the type of the specific signal according to the specific signal comprises:

and determining the type of the specific signal according to the signal frequency carried in the specific signal and the initialization packet header.

6. The method according to claim 5, wherein the determining the type of the specific signal according to the signal frequency carried in the specific signal and an initialization packet header comprises:

detecting the signal frequency and an initialization packet header carried in the specific signal, and if the signal frequency is between 200KHz and 1MHZ and the initialization packet header meets the standard of a wireless charging signal, judging that the specific signal is of a wireless charging signal type;

if the signal frequency is 13.56MHz and the initialization packet header meets the NFC signal standard, judging that the specific signal is of an NFC signal type;

if the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.

7. A terminal for selecting an antenna, comprising: set up first antenna module and second antenna module on the terminal, its characterized in that still includes:

a receiving module, configured to receive the specific signal acquired by the first antenna module;

a determining module for determining a type of the specific signal according to the specific signal;

and the selection module is used for selecting the corresponding antenna according to the type of the specific signal.

8. The terminal according to claim 7, wherein the selection module is configured to, when the specific signal is an NFC signal type, electrically connect the first antenna module and the second antenna module to form a third antenna module;

the terminal further comprises: and the NFC module is used for carrying out NFC communication through the third antenna module.

9. The terminal of claim 7, further comprising: a wireless charging circuit module;

the selection module is further specifically configured to electrically connect the first antenna module and the wireless charging circuit module when the specific signal is a wireless charging signal type;

the wireless charging circuit module is used for wirelessly charging through the first antenna module.

10. The terminal of claim 8, wherein the selection module is further specifically configured to electrically connect the first antenna module and the second antenna module in parallel to form a third antenna module.

11. The terminal according to any one of claims 7 to 10, wherein the determining module is specifically configured to determine the type of the specific signal according to a signal frequency carried in the specific signal and an initialization packet header.

12. The terminal of claim 11, wherein the determining module is further specifically configured to detect a signal frequency carried in the specific signal and an initialization packet header, and if the signal frequency is between 200KHz and 1MHZ and the initialization packet header meets a wireless charging signal standard, determine that the specific signal is a wireless charging signal type;

if the signal frequency is 13.56MHz and the initialization packet header meets the NFC signal standard, judging that the specific signal is of an NFC signal type;

if the specific signal includes both the wireless charging signal and the NFC signal, it is determined that the specific signal is a wireless charging signal type.