WO2023016371A1

WO2023016371A1 - Antenna polarity switching method, antenna module, and electronic device

Info

Publication number: WO2023016371A1
Application number: PCT/CN2022/110566
Authority: WO
Inventors: 黄润鹏; 谢毅华
Original assignee: 维沃移动通信有限公司
Priority date: 2021-08-11
Filing date: 2022-08-05
Publication date: 2023-02-16
Also published as: CN113629408A

Abstract

The present application provides an antenna polarity switching method, an antenna module, and an electronic device. The antenna module comprises an antenna unit, a first switch unit, a phase converter; and a signal receiving unit; the antenna unit comprises a first antenna and a second antenna; the first antenna is connected to a first end of the first switch unit; the second antenna is connected to a second end of the first switch unit; a third end of the first switch unit is connected to a first input end of the phase converter; a fourth end of the first switch unit is connected to a second input end of the phase converter; and an output end of the phase converter is connected to the signal receiving unit.

Description

Antenna polarity switching method, antenna module and electronic equipment

Cross References to Related Applications

This application claims priority to Chinese Patent Application No. 202110919643.6 filed in China on August 11, 2021, the entire contents of which are hereby incorporated by reference.

technical field

The present application belongs to the technical field of antennas, and in particular relates to an antenna polarity switching method, an antenna module and electronic equipment.

Background technique

At present, electronic devices usually use antennas to receive satellite signals emitted by the Global Navigation Satellite System (GNSS) to accurately locate electronic devices. Wherein, the polarization direction of the satellite signal is right-handed circular polarization. In order to ensure that the electronic device can accurately receive the satellite signal in various holding states, the electronic device usually uses an antenna with switchable polarity to receive the satellite signal.

In the prior art, the switchable polarity antenna has a large number of components and a relatively complicated structure, which causes the existing switchable polarity antenna to occupy a large amount of internal space of the electronic device, resulting in a high thickness of the electronic device. It is not conducive to the thinning and lightening of electronic equipment.

Contents of the invention

The purpose of the embodiments of the present application is to provide an antenna polarity switching method, antenna module and electronic equipment, which can solve the problem that the existing switchable polarity antenna occupies a large amount of internal space of the electronic equipment and increases the stacking of the whole electronic equipment. Thick technical issues.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

In the first aspect, the embodiment of the present application provides an antenna module, including an antenna unit, a first switch unit, a phase converter, and a signal receiving unit;

The antenna unit includes a first antenna and a second antenna, the first antenna is connected to the first end of the first switch unit, and the second antenna is connected to the second end of the first switch unit;

The third terminal of the first switch unit is connected to the first input terminal of the phase converter, and the fourth terminal of the first switch unit is connected to the second input terminal of the phase converter;

The output end of the phase converter is connected to the signal receiving unit;

Wherein, when the first antenna and the second antenna are electrically connected to the phase converter through the first switch unit, the polarization state of the antenna unit is adjusted through the phase converter.

In a second aspect, an embodiment of the present application provides an electronic device, including the antenna module as described in the first aspect.

In the third aspect, the embodiment of the present application provides an antenna polarity switching method, which is applied to the antenna module described in the first aspect, and the method includes:

When the electronic device is in a preset posture, controlling the polarization state of the electronic device to be a first state; when the electronic device is not in a preset posture, controlling the polarization state of the antenna unit is the second state, or;

The polarization state of the electronic device is adjusted to a target polarization state, and the target polarization state is a polarization state with the lowest carrier-to-noise power spectral density ratio among all polarization states.

The antenna module provided in the embodiment of the present application includes an antenna unit, a first switch unit, a phase converter and a signal receiving unit; the antenna unit includes a first antenna and a second antenna, and the first antenna is connected to the first end of the first switch unit , the second antenna is connected to the second terminal of the first switch unit; the third terminal of the first switch unit is connected to the first input terminal of the phase converter, and the fourth terminal of the first switch unit is connected to the second input terminal of the phase converter The terminal is connected; the output terminal of the phase converter is connected with the signal receiving unit. In the antenna module in the embodiment of the present application, when the first antenna and the second antenna are electrically connected to the phase converter through the first switch unit, the polarization state of the antenna unit can be adjusted through the phase converter. The antenna module is composed of a small number of components and has a simple circuit structure, thereby releasing the internal space of the electronic equipment, reducing the stacking thickness of the electronic equipment, and facilitating the light and thin design of the electronic equipment.

Description of drawings

FIG. 1 is a schematic diagram of an antenna module provided in an embodiment of the present application;

Fig. 2 is one of the specific structural diagrams of the antenna module provided by the embodiment of the present application;

Fig. 3 is the second specific structural diagram of the antenna module provided by the embodiment of the present application;

Fig. 4 is a schematic diagram of changes in the insertion loss value of the antenna module provided by the embodiment of the present application;

Fig. 5 is the third specific structural diagram of the antenna module provided by the embodiment of the present application;

Fig. 6 is the fourth specific structural diagram of the antenna module provided by the embodiment of the present application;

Fig. 7 is a flow chart of the antenna polarity switching method provided by the embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

Please refer to FIG. 1 . FIG. 1 is a block diagram of an antenna module provided by an embodiment of the present application. As shown in FIG. 1, the antenna module provided by the embodiment of the present application includes an antenna unit 10, a first switch unit 20, a phase converter 30 and a signal receiving unit 40;

The antenna unit 10 includes a first antenna 11 and a second antenna 12, the first antenna 11 is connected to the first end of the first switch unit 20, the second antenna 12 is connected to the first switch unit 20 The second end of the connection;

The third terminal of the first switch unit 20 is connected to the first input terminal of the phase converter 30, and the fourth terminal of the first switch unit 20 is connected to the second input terminal of the phase converter 30;

The output terminal of the phase converter 30 is connected with the signal receiving unit 40 .

It should be understood that the above-mentioned first antenna 11 and second antenna 12 are both arranged inside the electronic device, if the coherence coefficient between the first antenna 11 and the second antenna 12 is high, the signal strength of the signal received by the antenna unit 10 will be reduced . In this embodiment, the first antenna 11 and the second antenna 12 are set perpendicular to each other to reduce the coherence coefficient between the first antenna 11 and the second antenna 12 , thereby increasing the signal strength of the signal received by the antenna unit 10 .

Taking the electronic device as a mobile terminal as an example, the first antenna 11 can be arranged on one side of the screen of the electronic device, and the second antenna 12 can be arranged on a side perpendicular to the screen of the electronic device; or, the first antenna 11 can be arranged on the side of the electronic device and On the side opposite to the screen, that is, the back of the electronic device, the second antenna 12 is arranged on the side perpendicular to the back of the electronic device. Here, it is only limited that the first antenna 11 and the second antenna 12 are perpendicular to each other, and the specific positions of the first antenna 11 and the second antenna 12 are not limited.

The phase converter 30 is used to change the phase difference between the signal received by the first antenna 11 and the signal received by the second antenna 12 , so as to adjust the polarization state of the antenna unit 10 .

The above-mentioned signal receiving unit 40 is used for receiving the signal transmitted by the antenna unit 10, wherein the above-mentioned signal may be a satellite signal, a radio frequency signal, an electromagnetic wave signal or other types of signals. The signal receiving unit 40 may be a signal receiver or other devices.

The above-mentioned first switch unit 20 is used to control the electrical connection between the first antenna 11 and the second antenna 12 and the phase converter 30, and the above-mentioned first switch unit 20 may be a double-pole double-throw switch, a double-pole three-throw switch or other types of switches .

In this embodiment, if the first antenna 11 and the second antenna 12 are electrically connected to the phase converter 30 through the first switch unit 20, then the phase converter 30 can be used to adjust and change the signal received by the first antenna 11 and the signal received by the second antenna 12. The phase difference between the received signals is used to adjust the polarization state of the antenna unit 10 .

In the antenna module in the embodiment of the present application, when the first antenna 11 and the second antenna 12 are electrically connected to the phase converter 30 through the first switch unit 20, the polarization state of the antenna unit 10 can be adjusted through the phase converter 30 , and the antenna module is composed of a small number of components, so as to release the internal space of the electronic equipment, reduce the stacking thickness of the electronic equipment, and facilitate the thin and light design of the electronic equipment.

It should be understood that the antenna module in the embodiment of the present application consists of a small number of components, which can reduce costs. In addition, due to the simple circuit structure of the antenna module, the line insertion loss generated during the use of the antenna module is less, and the simple circuit structure can reduce the risk of failure of the components of the antenna module during use, thereby improving the performance of the antenna. Module efficiency and reliability.

Optionally, the phase converter 30 includes a bridge 31 and a bridge load 32;

The first end of the electric bridge 31 is connected to the signal receiving unit 40, the second end of the electric bridge 31 is connected to the third end of the first switch unit 20, and the third end of the electric bridge 31 It is connected to the fourth end of the first switch unit 20 , and the fourth end of the bridge 31 is connected to the bridge load 32 .

Please refer to FIG. 2 . FIG. 2 is one of the specific structural diagrams of the antenna module provided by the embodiment of the present application. As shown in FIG. 2 , the above-mentioned first switch unit 20 may be a double pole double throw switch. Wherein, the first port of the double pole double throw switch is used as the first end of the first switch unit 20, the second port is used as the second end of the first switch unit 20, and the third port is used as the third end of the first switch unit 20, The fourth port serves as the fourth terminal of the first switch unit 20 .

As shown in Figure 2, the above-mentioned phase converter 30 includes an electric bridge 31 and an electric bridge load 32, wherein the above-mentioned electric bridge 31 is a 90-degree hybrid electric bridge 31, which can change the phase difference of the antenna transmission signal, and the first electric bridge 31 The second port serves as the first input end of the phase converter 30 , the third port serves as the second input end of the phase converter 30 , and the first port serves as the output end of the phase converter 30 . In order to achieve balance of the bridge 31 , the fourth port of the bridge 31 is connected to a bridge load 32 . Optionally, the resistance of the bridge load 32 is 50 ohms.

As shown in Figure 2, the above-mentioned signal receiving module can be a receiver for receiving satellite signals. The device that generates the signal. Optionally, the first antenna 11 is electrically connected to the second end of the bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the second end of the bridge 31 through the first switch unit 20. When the third end of the bridge 31 is electrically connected, the polarization state of the antenna unit 10 is the first circular polarization.

The first antenna 11 is electrically connected to the third end of the electric bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the third end of the electric bridge 31 through the first switch unit 20. When the second end is electrically connected, the polarization state of the antenna unit 10 is the second circular polarization.

For the antenna module provided in Figure 2, the first port of the double-pole double-throw switch is connected to the third port, the first port of the double-pole double-throw switch is connected to the first antenna 11, and the first port of the double-pole double-throw switch is connected to the first antenna 11. The third port is connected with the second port of the electric bridge 31; the second port of the double pole double throw switch is connected with the fourth port, the second port of the double pole double throw switch is connected with the second antenna 12, the double pole double throw switch When the fourth port is connected to the third port of the bridge 31, the phase of the signal received by the first antenna 11 is 90 degrees behind that of the signal received by the second antenna 12, and the polarization state of the antenna unit 10 is the first circle. polarization.

The first port of the DPDT switch is connected to the fourth port, the first port of the DPDT switch is connected to the first antenna 11, and the fourth port of the DPDT switch is connected to the third port of the bridge 31 The second port of the double pole double throw switch is connected with the third port, the second port of the double pole double throw switch is connected with the second antenna 12, the third port of the double pole double throw switch is connected with the second port of the electric bridge 31 In the case of , the phase of the signal received by the first antenna 11 is 90 degrees ahead of the signal received by the second antenna 12 , and the polarization state of the antenna unit 10 is the second circular polarization.

It should be understood that if the first antenna 11 is arranged on one side of the screen of the electronic device, and the second antenna 12 is arranged on a side perpendicular to the screen of the electronic device, then the above-mentioned first circular polarization is left-handed circular polarization, and the second circular polarization is right-handed circular polarization. circular polarization. If the first antenna 11 is arranged on the back of the electronic device, and the second antenna 12 is arranged on the vertical side of the back of the electronic device, then the above-mentioned first circular polarization is right-handed circular polarization, and the second circular polarization is left-handed circular polarization.

For the electronic equipment with the antenna module provided in Fig. 2, when the first antenna 11 is arranged on one side of the screen of the electronic equipment, and the second antenna 12 is arranged on the side perpendicular to the screen of the electronic equipment, a gravity sensor can be used to detect Whether the screen of the electronic device is facing up. If the screen of the electronic equipment is upward, the polarization state of the antenna unit 10 is adjusted to be right-handed circular polarization by the first switch unit 20 and the phase converter 30; 20 and phase converter 30 to adjust the polarization state of the antenna unit 10 to be left-handed circular polarization.

It should be understood that when the first antenna 11 is arranged on the back of the electronic device and the second antenna 12 is arranged on the vertical side of the back of the electronic device, a gravity sensor can be used to detect whether the screen of the electronic device is facing up. If the screen of the electronic device faces upward, the polarization state of the antenna unit 10 is adjusted to be left-handed circular polarization by the first switch unit 20 and the phase converter 30; The sum and phase converter 30 adjusts the polarization state of the antenna unit 10 to be right-handed circular polarization.

In this embodiment, based on the specific structure of the antenna module provided in FIG. 2, in the case that the first switch unit 20 is a double-pole double-throw switch, by adjusting the connection relationship of the internal ports of the double-pole double-throw switch, and using an electric The bridge 31 achieves the purpose of adjusting the polarization state of the antenna unit 10 . In addition, this embodiment can also adjust the polarization state of the antenna unit 10 based on different postures of the electronic device, so that the polarization state of the antenna unit 10 matches the polarization direction of the signal, thereby enhancing the signal received by the antenna unit 10. signal strength.

Optionally, the phase converter 30 includes a bridge 31 and a bridge load 32, and the first switch unit 20 further includes a fifth terminal and a sixth terminal;

The first end of the electric bridge 31 is connected to the signal receiving unit 40, the second end of the electric bridge 31 is connected to the third end of the first switch unit 20, and the third end of the electric bridge 31 Connected to the fourth end of the first switch unit 20, the fourth end of the bridge 31 is connected to the fifth end of the first switch unit 20;

The sixth end of the first switch unit 20 is connected to the bridge load 32 .

Please refer to FIG. 3 . FIG. 3 is the second specific structural diagram of the antenna module provided by the embodiment of the present application. As shown in Fig. 3, the above-mentioned signal receiving module may be a receiver for receiving satellite signals.

The above-mentioned first switch unit 20 may be a three-pole three-throw switch. Wherein, the first port of the three-pole three-throw switch is used as the first end of the first switch unit 20, the second port is used as the second end of the first switch unit 20, and the third port is used as the third end of the first switch unit 20, The fourth port serves as the fourth terminal of the first switch unit 20 , the fifth port serves as the fifth terminal of the first switch unit 20 , and the sixth port serves as the sixth terminal of the first switch unit 20 .

As shown in Figure 3, the above-mentioned phase converter 30 includes an electric bridge 31 and a bridge load 32, wherein the above-mentioned electric bridge 31 is a 90-degree hybrid bridge 31, and the second port of the above-mentioned electric bridge 31 is used as the first port of the phase converter 30 One input terminal, the third port is used as the second input terminal of the phase converter 30, the first port is connected to the signal receiving unit 40, and the fourth port is connected to the fifth port of the three-pole three-throw switch.

One end of the bridge load 32 is grounded, and the other end is connected to the sixth port of the three-pole three-throw switch.

Optionally, when the first antenna 11 is electrically connected to the second end of the bridge 31 through the first switch unit 20, the polarization state of the antenna unit 10 is the first linear polarization ;

In the case where the second antenna 12 is electrically connected to the second end of the bridge 31 through the first switch unit 20, the polarization state of the antenna unit 10 is the second linear polarization;

The first antenna 11 is electrically connected to the second end of the bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the second end of the bridge 31 through the first switch unit 20. When the third end is electrically connected, the polarization state of the antenna unit 10 is the first circular polarization;

For the antenna module provided in Figure 3, in the case where the third port of the three-pole three-throw switch is connected to the first port, the fourth port is connected to the fifth port, and the second port is connected to the sixth port, the antenna unit 10 If only the first antenna 11 is used, the polarization state of the antenna unit 10 is linear polarization.

In the case where the third port of the three-knife three-throw switch is connected to the second port, the fourth port is connected to the fifth port, and the sixth port is connected to the first port, the antenna unit 10 only uses the second antenna 12, and the antenna unit The polarization state of 10 is linear polarization.

It should be understood that when the polarization state of the antenna unit 10 is linear polarization, the bridge load 32 is not connected to the bridge 31, so that the insertion loss of the antenna module can be reduced, thereby improving the working efficiency of the antenna module.

For ease of understanding, please refer to FIG. 4 , which is a schematic diagram of changes in insertion loss values of the antenna module provided by the embodiment of the present application. As shown in FIG. 4 , the axis of abscissa in FIG. 4 is the frequency of the signal in GHz; the axis of ordinate is the insertion loss value of the bridge 31 in dB.

Wherein, the curve A1 in Fig. 4 represents the insertion loss value between the first port and the second port of the electric bridge 31 when the fourth port of the electric bridge 31 is connected to the electric bridge load 32; When the fourth port of the bridge 31 is connected to the bridge load 32, the insertion loss value between the first port and the third port of the bridge 31; Curve A3 shows that the fourth port of the bridge 31 is not connected to the bridge In the case of the load 32, the insertion loss value between the third port and the fourth port of the bridge 31.

It can be obtained from FIG. 4 that in this embodiment, by setting the bridge load 32 not connected to the bridge 31, the insertion loss value generated by the bridge 31 can be effectively reduced, and the electromagnetic interference phenomenon that affects the normal operation of the antenna module can be avoided. .

In this embodiment, when the third port of the three-pole three-throw switch is connected to the first port, the fourth port is connected to the second port, and the sixth port is connected to the fifth port, the signal received by the first antenna 11 is the same as Compared with the phase lag of the signal received by the second antenna 12 by 90 degrees, the polarization state of the antenna unit 10 is the first circular polarization.

In the case where the third port of the three-knife three-throw switch is connected to the second port, the fourth port is connected to the first port, and the sixth port is connected to the fifth port, the signal received by the first antenna 11 is compared to the signal received by the second antenna. 12 The phase of the received signal is advanced by 90 degrees, and the polarization state of the antenna unit 10 is the second circular polarization.

In this embodiment, based on the specific structure of the antenna module provided in FIG. 3, in the case that the first switch unit 20 is a three-pole three-throw switch, the connection relationship of the internal ports of the three-pole three-throw switch can be adjusted, and the antenna unit can be adjusted. The polarization state of 10 is linear polarization, first circular polarization or second circular polarization. Moreover, the number of components used in the antenna module is small, which is convenient for thinner and thinner design of electronic equipment. In addition, when the polarization state of the antenna unit 10 is adjusted to linear polarization, the bridge 31 in this embodiment is not connected to the bridge load 32, which can reduce the insertion loss of the antenna module, thereby improving the work of the antenna module. efficiency.

Optionally, the antenna module further includes a second switch unit 50, the first switch unit 20 further includes a seventh terminal, and the phase converter 30 includes a bridge 31 and a bridge load 32;

The first end of the second switch unit 50 is connected to the seventh end of the first switch unit 20, the second end of the second switch unit 50 is connected to the first end of the bridge 31, and the The third end of the second switch unit 50 is connected to the signal receiving unit 40;

The second end of the electric bridge 31 is connected to the third end of the first switch unit 20, the third end of the electric bridge 31 is connected to the fourth end of the first switch unit 20, and the electric bridge The fourth end of 31 is connected to the bridge load 32 .

Please refer to FIG. 5 . FIG. 5 is the third specific structural diagram of the antenna module provided by the embodiment of the present application. As shown in Fig. 5, the signal receiving module may be a receiver for receiving satellite signals. The antenna module further includes a second switch unit 50, which is a single pole double throw switch. Wherein, the first port of the SPDT switch is used as the first end of the second switch unit 50 , the second port is used as the second end of the second switch unit 50 , and the third port is used as the third end of the second switch unit 50 .

The above-mentioned first switch unit 20 is a double-pole three-throw switch, wherein the first port of the double-pole three-throw switch is used as the first end of the first switch unit 20, the second port is used as the second end of the first switch unit 20, and the second port is used as the second end of the first switch unit 20. Three ports are used as the third end of the first switch unit 20, the fourth port is used as the fourth end of the first switch unit 20, the fifth port is used as the seventh end of the first switch unit 20, and the fifth port is connected with the second switch unit The first end of 50 is connected.

The phase converter 30 includes a bridge 31 and a bridge load 32, wherein the bridge 31 is a 90-degree hybrid bridge 31, the second port of the bridge 31 serves as the first input terminal of the phase converter 30, and the third The ports serve as the second input end of the phase converter 30 , the first port is connected to the second end of the second switch unit 50 , and the fourth port is connected to the bridge load 32 .

Optionally, when the first antenna 11 is electrically connected to the signal receiving unit 40 through the first switch unit 20 and the second switch unit 50, the polarization state of the antenna unit 10 is first line polarization;

When the second antenna 12 is electrically connected to the signal receiving unit 40 through the first switch unit 20 and the second switch unit 50, the polarization state of the antenna unit 10 is the second linear polarization ;

The first antenna 11 is electrically connected to the second end of the bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the second end of the bridge 31 through the first switch unit 20. When the three terminals are electrically connected, and the electric bridge 31 is electrically connected to the signal receiving unit 40 through the second switch unit 50 , the polarization state of the antenna unit 10 is the first circular polarization.

The first antenna 11 is electrically connected to the third end of the bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the third end of the bridge 31 through the first switch unit 20. When the two terminals are electrically connected, and the electric bridge 31 is electrically connected to the signal receiving unit 40 through the second switch unit 50 , the polarization state of the antenna unit 10 is the second circular polarization.

For the antenna module provided in Figure 5, when the first port of the single-pole double-throw switch is connected to the third port, and when the first port of the double-pole three-throw switch is connected to the fifth port, the antenna unit 10 Using the first antenna 11, the polarization state of the antenna unit 10 is linear polarization.

When the first port of the single-pole double-throw switch is connected to the third port, and when the second port of the double-pole three-throw switch is connected to the fifth port, the antenna unit 10 only uses the second antenna 12, then the pole of the antenna unit 10 The polarization state is linear polarization.

When the second port of the single-pole double-throw switch is connected to the third port, the third port of the double-pole three-throw switch is connected to the first port, and the second port is connected to the fourth port, the signal received by the first antenna 11 Compared with the phase lag of the signal received by the second antenna 12 by 90 degrees, the polarization state of the antenna unit 10 is the first circular polarization.

When the second port of the single-pole double-throw switch is connected to the third port, the third port of the double-pole three-throw switch is connected to the second port, and the first port is connected to the fourth port, the signal received by the first antenna 11 Compared with the phase of the signal received by the second antenna 12 leading by 90 degrees, the polarization state of the antenna unit 10 is the second circular polarization.

In this embodiment, the first switch unit 20 and the second switch unit 50 are provided based on the specific structure of the antenna module provided in FIG. The electric bridge 31 achieves the purpose of adjusting the polarization state of the antenna unit 10 . Since the antenna module provided in this embodiment involves fewer components, the stacking thickness of the electronic device can be reduced.

Optionally, the antenna module further includes a third switch unit 60, and the phase converter 30 includes a bridge 31 and a bridge load 32;

The first end of the electric bridge 31 is connected to the signal receiving unit 40, the second end of the electric bridge 31 is connected to the third end of the first switch unit 20, and the third end of the electric bridge 31 connected to the fourth terminal of the first switch unit 20, the fourth terminal of the bridge 31 is connected to the first terminal of the third switch unit 60, and the second terminal of the third switch unit 60 is connected to the The bridge load 32 is connected.

Please refer to FIG. 6 . FIG. 6 is the fourth specific structural diagram of the antenna module provided by the embodiment of the present application. As shown in Fig. 6, the signal receiving module may be a receiver for receiving satellite signals. The antenna module further includes a third switch unit 60, which is a single pole double throw switch. Wherein, the first port of the SPDT switch is used as the first end of the third switch unit 60 , the second port is used as the second end of the third switch unit 60 , and the third port is used as the third end of the third switch unit 60 .

The above-mentioned first switch unit 20 may be an M pole N throw switch, wherein M is greater than or equal to 3, and N is greater than or equal to 3. The description will be made by taking the first switch unit 20 as an example of a three-pole three-throw switch. The first port of the three-knife three-throw switch is connected to the first antenna 11, the second port is connected to the second antenna 12, the third port is connected to the first input end of the phase converter 30, and the fourth port is connected to the phase converter 30. The second input terminal is connected, and the fifth port and the sixth port are vacant ports.

Above-mentioned phase changer 30 comprises electric bridge 31 and electric bridge load 32, and wherein, the first port of electric bridge 31 is as the output end of phase changer 30, and the second port is as the first input end of phase changer 30, and the third port As the second input terminal of the phase converter 30 , the fourth port is connected to the first terminal of the third switch unit 60 , and the third terminal of the third switch unit 60 is connected to the bridge load 32 .

In the case where the second antenna 12 is electrically connected to the second end of the bridge 31 through the first switch unit 20, the polarization state of the antenna unit 10 is the first linear polarization;

The first antenna 11 is electrically connected to the second end of the bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the third end of the bridge 31 through the first switch unit 20. When the terminals are electrically connected, and the fourth end of the bridge 31 is electrically connected to the bridge load 32 through the third switch unit 60, the polarization state of the antenna unit 10 is the first circular polarization ;

The first antenna 11 is electrically connected to the third end of the electric bridge 31 through the first switch unit 20, and the second antenna 12 is connected to the second end of the electric bridge 31 through the first switch unit 20. When the terminals are electrically connected, and the fourth end of the bridge 31 is electrically connected to the bridge load 32 through the third switch unit 60, the polarization state of the antenna unit 10 is the second circular polarization .

For the antenna module provided in Figure 6, the third port of the single-pole double-throw switch is connected to the second port, the first port of the three-pole three-throw switch is connected to the third port, and the fourth port is connected to the fifth port. In the case where the antenna unit 10 uses only the first antenna 11, the polarization state of the antenna unit 10 is linear polarization.

In the case where the third port of the single-pole double-throw switch is connected to the second port, the second port of the three-pole three-throw switch is connected to the third port, and the fourth port is connected to the fifth port, the antenna unit 10 only uses the second antenna 12, the polarization state of the antenna unit 10 is linear polarization.

When the third port of the single-pole double-throw switch is connected to the first port, the first port of the three-pole three-throw switch is connected to the third port, and the fourth port is connected to the second port, the signal received by the first antenna 11 is the same as Compared with the phase lag of the signal received by the second antenna 12 by 90 degrees, the polarization state of the antenna unit 10 is the first circular polarization.

When the third port of the single-pole double-throw switch is connected to the first port, the second port of the three-pole three-throw switch is connected to the third port, and the fourth port is connected to the first port, the signal received by the first antenna 11 is the same as The phase of the signal received by the second antenna 12 is 90 degrees ahead, and the polarization state of the antenna unit 10 is the second circular polarization.

In this embodiment, based on the specific structure of the antenna module provided in FIG. 6, the antenna can be adjusted by setting the first switch unit 20, the third switch unit 60, the bridge 31 and the bridge load 32 with a small number of components. The polarization state of the unit 10 further reduces the stacking thickness of the electronic device, making the electronic device lighter and thinner.

Optionally, the polarization state of the electronic device is set as a target polarization state, and the target polarization state is a polarization state with the lowest carrier-to-noise power spectral density ratio among all polarization states.

In some embodiments, the carrier-to-noise power spectral density ratio of the electronic device in each polarization state is acquired, and the wave-to-noise power spectral density ratio is the ratio of the carrier signal power at the intermediate frequency output terminal of the receiver to the white noise power spectral density. The polarization state with the lowest carrier-to-noise power spectral density ratio is determined as the target polarization state, and the polarization state of the antenna unit 10 is adjusted to the target polarization state.

It should be understood that an electronic device generally has two antennas, a first antenna 11 and a second antenna 12, wherein the first antenna 11 supports the L1 frequency band, and the second antenna 12 supports the L1 frequency band and the L5 frequency band.

If the second antenna 12 supports the L1 frequency band and the L5 frequency band at the same time, then, when the electronic device needs to obtain the signal of the L1 frequency band, call the first antenna 11 and the second antenna 12 at the same time; when the electronic device needs to obtain the signal of the L5 frequency band, call Second antenna 12.

If the second antenna 12 supports the L1 frequency band and the L5 frequency band by setting the antenna tuner, then, when the electronic device needs to obtain the signal of the L1 frequency band, the first antenna 11 and the second antenna 12 are called at the same time; For the signals of the L1 frequency band and the L5 frequency band, the first antenna 11 is called to acquire the signal of the L1 frequency band, and the second antenna 12 is called to acquire the signal of the L5 frequency band.

An embodiment of the present application further provides a method for switching antenna polarity, and the method is applied to an electronic device, and the electronic device includes the antenna module provided in the foregoing embodiment. As shown in Figure 7, the method includes:

S101. When the electronic device is in a preset posture, control the polarization state of the electronic device to be the first state; when the electronic device is not in the preset posture, control the polarization state of the antenna unit to be the second state. Two states.

In this embodiment, the gravity sensor of the electronic device can be used to detect whether the screen of the electronic device is facing up. When the first antenna is set on one side of the screen of the electronic device, and the second antenna is set on the side perpendicular to the screen of the electronic device, set The aforementioned preset posture is that the screen of the electronic device faces upward.

When the electronic device is in a preset posture, the above-mentioned first state is right-handed circular polarization, and the above-mentioned second state is left-handed circular polarization.

In the case that the first antenna is arranged on the back of the electronic device, and the second antenna is arranged on the vertical side of the back of the electronic device, the above-mentioned preset posture is set so that the screen of the electronic device faces upward.

When the electronic device is in a preset posture, the above-mentioned first state is left-handed circular polarization, and the above-mentioned second state is right-handed circular polarization.

S102. Adjust the polarization state of the electronic device to a target polarization state.

As mentioned above, the wave-to-noise power spectral density ratio is the ratio of the power of the carrier signal at the IF output of the receiver to the power spectral density of the white noise. In this step, obtain the carrier-to-noise power spectral density ratio of the electronic equipment in each polarization state, determine the polarization state with the lowest carrier-to-noise power spectral density ratio as the target polarization state, and adjust the polarization state of the electronic device to this target polarization state.

In this embodiment, the polarization state of the electronic device is adjusted according to the actual situation of the electronic device, so as to increase the signal strength of the signal received by the antenna unit.

An embodiment of the present application further provides an electronic device, where the electronic device includes the antenna module provided in the foregoing embodiment. Wherein, for the specific implementation manner of the antenna module, reference may be made to the above description, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

In the embodiment of the present application, the above-mentioned electronic equipment can be a computer (Computer), a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (PDA for short), a mobile Internet access electronic device Equipment (Mobile Internet Device, MID), wearable device (Wearable Device), e-reader, navigator, digital camera, etc.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims

An antenna module, including an antenna unit, a first switch unit, a phase converter and a signal receiving unit;

The antenna unit includes a first antenna and a second antenna, the first antenna is connected to the first end of the first switch unit, and the second antenna is connected to the second end of the first switch unit;

The third terminal of the first switch unit is connected to the first input terminal of the phase converter, and the fourth terminal of the first switch unit is connected to the second input terminal of the phase converter;

The output end of the phase converter is connected to the signal receiving unit;

Wherein, when the first antenna and the second antenna are electrically connected to the phase converter through the first switch unit, the polarization state of the antenna unit is adjusted through the phase converter.
The antenna module according to claim 1, wherein the phase shifter comprises a bridge and a bridge load;

The first end of the electric bridge is connected to the signal receiving unit, the second end of the electric bridge is connected to the third end of the first switch unit, the third end of the electric bridge is connected to the first The fourth end of the switch unit is connected, and the fourth end of the bridge is connected with the bridge load.
The antenna module according to claim 2, wherein the first antenna is electrically connected to the second end of the bridge through the first switch unit, and the second antenna is connected through the first switch When the unit is electrically connected to the third end of the bridge, the polarization state of the antenna unit is the first circular polarization;

When the first antenna is electrically connected to the third end of the electric bridge through the first switch unit, and the second antenna is electrically connected to the second end of the electric bridge through the first switch unit In some cases, the polarization state of the antenna unit is the second circular polarization.
The antenna module according to claim 1, wherein the phase shifter includes a bridge and a bridge load, and the first switch unit further includes a fifth terminal and a sixth terminal;

The first end of the electric bridge is connected to the signal receiving unit, the second end of the electric bridge is connected to the third end of the first switch unit, the third end of the electric bridge is connected to the first The fourth end of the switch unit is connected, and the fourth end of the bridge is connected to the fifth end of the first switch unit;

The sixth end of the first switch unit is connected to the bridge load.
The antenna module according to claim 4, wherein, when the first antenna is electrically connected to the second end of the bridge through the first switch unit, the polarization state of the antenna unit is first line polarization;

When the second antenna is electrically connected to the second end of the bridge through the first switch unit, the polarization state of the antenna unit is a second linear polarization;

The first antenna is electrically connected to the second end of the electric bridge through the first switch unit, and the second antenna is electrically connected to the third end of the electric bridge through the first switch unit In this case, the polarization state of the antenna unit is the first circular polarization;

When the first antenna is electrically connected to the third end of the electric bridge through the first switch unit, and the second antenna is electrically connected to the second end of the electric bridge through the first switch unit In some cases, the polarization state of the antenna unit is the second circular polarization.
The antenna module according to claim 1, wherein the antenna module further includes a second switch unit, the first switch unit further includes a seventh terminal, and the phase converter includes a bridge and a bridge load;

The first end of the second switch unit is connected to the seventh end of the first switch unit, the second end of the second switch unit is connected to the first end of the bridge, and the second switch unit The third end is connected to the signal receiving unit;

The second end of the electric bridge is connected to the third end of the first switch unit, the third end of the electric bridge is connected to the fourth end of the first switch unit, and the fourth end of the electric bridge connected with the bridge load.
The antenna module according to claim 6, wherein when the first antenna is electrically connected to the signal receiving unit through the first switch unit and the second switch unit, the antenna unit The polarization state is the first linear polarization;

When the second antenna is electrically connected to the signal receiving unit through the first switch unit and the second switch unit, the polarization state of the antenna unit is a second linear polarization;

The first antenna is electrically connected to the second end of the bridge through the first switch unit, the second antenna is electrically connected to the third end of the bridge through the first switch unit, and When the electric bridge is electrically connected to the signal receiving unit through the second switch unit, the polarization state of the antenna unit is the first circular polarization;

The first antenna is electrically connected to the third end of the bridge through the first switch unit, the second antenna is electrically connected to the second end of the bridge through the first switch unit, and When the electric bridge is electrically connected to the signal receiving unit through the second switch unit, the polarization state of the antenna unit is the second circular polarization.
The antenna module according to claim 1, wherein the antenna module further comprises a third switch unit, and the phase converter comprises a bridge and a bridge load;

The first end of the electric bridge is connected to the signal receiving unit, the second end of the electric bridge is connected to the third end of the first switch unit, the third end of the electric bridge is connected to the first The fourth end of the switch unit is connected, the fourth end of the bridge is connected to the first end of the third switch unit,

The second end of the third switch unit is connected to the bridge load.
The antenna module according to claim 8, wherein, when the first antenna is electrically connected to the second end of the bridge through the first switch unit, the polarization state of the antenna unit is first line polarization;

When the second antenna is electrically connected to the second end of the bridge through the first switch unit, the polarization state of the antenna unit is the first linear polarization;

The first antenna is electrically connected to the second end of the electric bridge through the first switch unit, the second antenna is electrically connected to the third end of the electric bridge through the first switch unit, and the When the fourth end of the bridge is electrically connected to the bridge load through the third switch unit, the polarization state of the antenna unit is the first circular polarization;

The first antenna is electrically connected to the third end of the electric bridge through the first switch unit, the second antenna is electrically connected to the second end of the electric bridge through the first switch unit, and the When the fourth end of the bridge is electrically connected to the load of the bridge through the third switch unit, the polarization state of the antenna unit is the second circular polarization.
An electronic device, comprising the antenna module according to any one of claims 1-9.
An antenna polarity switching method applied to electronic equipment, the electronic equipment comprising the antenna module according to any one of claims 1 to 9, the method comprising:

When the electronic device is in a preset posture, controlling the polarization state of the electronic device to be a first state; when the electronic device is not in a preset posture, controlling the polarization state of the antenna unit is the second state, or;

The polarization state of the electronic device is adjusted to a target polarization state, and the target polarization state is a polarization state with the lowest carrier-to-noise power spectral density ratio among all polarization states.