CN118057672A

CN118057672A - Impedance matching method and electronic equipment

Info

Publication number: CN118057672A
Application number: CN202211454992.6A
Authority: CN
Inventors: 江成; 王国龙
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2024-05-21

Abstract

The embodiment of the application is applicable to the technical field of antennas, and provides an impedance matching method and electronic equipment, wherein the electronic equipment comprises a first channel, a second channel and a first antenna, the first channel comprises a first phase shifter and a first circuit, the first antenna is respectively connected with the first channel and the second channel, and the first circuit is connected with the first antenna through the first phase shifter; the electronic equipment transmits the signals of the first frequency band through the first channel and the first antenna, and transmits the signals of the second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signals of the second frequency band, so that the first antenna can only meet the performance requirement of the first frequency band due to narrower working bandwidth, but can not meet the performance requirement of the second frequency band, the impedance of the first antenna in the second frequency band is adjusted through the first phase shifter, and the performance of the electronic equipment working in two frequency bands is improved.

Description

Impedance matching method and electronic equipment

Technical Field

The present application relates to the field of antenna technology, and more particularly, to an impedance matching method and an electronic device.

Background

Terminal devices employing frequency division duplex (Frequency Division Duplexing, FDD) mode typically operate in at least two operating frequency bands. As the number of electronic devices provided in the terminal device increases, the space allocated to the antenna by the terminal device decreases, which results in two operating frequency bands sharing one antenna.

For example, the operating frequency band of the terminal device includes frequency band 1 and frequency band 2, where the interval between frequency band 1 and frequency band 2 is small, frequency band 1 and frequency band 2 may share one antenna (such as antenna 1). Because the space in the terminal equipment is reduced, the space allocated to each antenna is reduced, so that the working bandwidth of the antenna is narrowed along with the reduction of the size space of the antenna, the working bandwidth of the antenna 1 cannot cover the frequency band 1 and the frequency band 2, and the performance of the antenna 1 cannot meet the performance requirements of the frequency band 1 and the frequency band 2 at the same time. In the case where the performance of the antenna 1 is biased toward the band 1, the performance of the band 2 is degraded; in the case where the performance of the antenna 1 is biased toward the frequency band 2, the performance of the frequency band 1 is degraded, resulting in poor performance of the terminal device when operating in the FDD mode.

Based on this, how to improve the performance of the terminal device when operating in the FDD mode becomes a problem to be solved.

Disclosure of Invention

The application provides an impedance matching method and electronic equipment, which can improve the performance of terminal equipment in an FDD mode.

In a first aspect, an electronic device includes a first channel, a second channel, and a first antenna, the first channel including a first circuit and a first phase shifter, the first antenna being connected to the first channel and the second channel, respectively, wherein the first circuit is connected to the first antenna through the first phase shifter; the electronic equipment transmits signals of a first frequency band through the first channel and the first antenna, transmits signals of a second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signals of the second frequency band.

The electronic equipment provided by the embodiment of the application comprises a first channel, a second channel and a first antenna, wherein the first channel comprises a first phase shifter and a first circuit, the first antenna is respectively connected with the first channel and the second channel, and the first circuit is connected with the first antenna through the first phase shifter; the electronic equipment transmits the signal of the first frequency band through the first channel and the first antenna, and transmits the signal of the second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signal of the second frequency band, so that the first antenna can only meet the performance requirement of the first frequency band due to narrower working bandwidth, but can not meet the performance requirement of the second frequency band, the impedance of the first antenna in the second frequency band is adjusted through the first phase shifter, and then the performance of the first antenna can meet the performance requirement of the second frequency band, which is equivalent to enabling the first antenna to meet the performance requirements of the first frequency band and the second frequency band at the same time, and the performance of the electronic equipment working at two frequency bands at the same time is improved.

With reference to the first aspect, in certain implementations of the first aspect, the second channel includes a second circuit and a second phase shifter, the second circuit is connected to the first antenna through the second phase shifter, and the second phase shifter is configured to adjust an impedance of the first antenna when the electronic device transmits the signal in the first frequency band.

The electronic equipment provided by the embodiment of the application comprises a first channel, a second channel and a first antenna, wherein the first channel comprises a first phase shifter and a first circuit, the second channel comprises a second phase shifter and a second circuit, the first antenna is respectively connected with the first channel and the second channel, the first circuit is connected with the first antenna through the first phase shifter, and the second circuit is connected with the first antenna through the second phase shifter; the electronic equipment transmits signals of a first frequency band through the first channel and the first antenna, transmits signals of a second frequency band through the second channel and the first antenna, the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signals of the second frequency band, and the second phase shifter is used for adjusting the impedance of the first antenna when transmitting the signals of the first frequency band. On the basis that the first antenna works in the second frequency band and the impedance of the first antenna is adjusted through the first phase shifter, when the first antenna works in the first frequency band, the impedance of the first antenna can be adjusted through the second phase shifter, so that the performance of the first antenna in the first frequency band is improved.

With reference to the first aspect, in some implementations of the first aspect, the electronic device further includes a third phase shifter, the first antenna is connected to the first channel and the second channel through the third phase shifter, and the third phase shifter is configured to adjust an impedance of the first antenna in the first frequency band and the second frequency band.

The electronic equipment provided by the embodiment of the application comprises a first channel, a second channel, a first antenna and a third phase shifter, wherein the first channel comprises a first phase shifter and a first circuit, the second channel comprises a second phase shifter and a second circuit, the first antenna is respectively connected with the first channel and the second channel through the third phase shifter, the first circuit is connected with the first antenna through the first phase shifter, and the second circuit is connected with the first antenna through the second phase shifter; the electronic equipment transmits signals of a first frequency band through the first channel and the first antenna, transmits signals of a second frequency band through the second channel and the first antenna, the first phase shifter is used for adjusting the impedance of the first antenna when transmitting signals of the second frequency band, the second phase shifter is used for adjusting the impedance of the first antenna when transmitting signals of the first frequency band, and the third phase shifter is used for adjusting the impedance of the first antenna in the first frequency band and the second frequency band. Since the first phase shifter or the second phase shifter is equivalent to a parallel inductance or capacitance, the parallel capacitance or inductance has its corresponding rotational path on the smith chart. Typically, the rotation path of the third phase shifter on the smith chart is different from the rotation path of the parallel capacitor or inductor. Therefore, under the condition that the impedance of the first antenna cannot be adjusted by the parallel capacitor or inductor, the impedance of the first antenna can be adjusted to be in a state of adjusting 50 omega by the parallel capacitor or inductor through the third phase shifter, and then the impedance of the first antenna is adjusted by the first phase shifter or the second phase shifter, so that the impedance of the first antenna is more close to 50 omega, further the performance of the first antenna is better, and further the performance of the electronic equipment working in two frequency bands is improved.

With reference to the first aspect, in some implementations of the first aspect, the electronic device further includes a third channel, the third channel includes a third circuit and a fourth phase shifter, the third circuit is connected to the first antenna through the fourth phase shifter, the electronic device transmits a signal of a third frequency band through the third channel and the first antenna, and the fourth phase shifter is configured to adjust an impedance of the first antenna when the electronic device transmits the signal of the first frequency band and/or the electronic device transmits the signal of the second frequency band.

The electronic equipment provided by the embodiment of the application comprises a first channel, a second channel, a third phase shifter and a first antenna, wherein the first channel comprises a first phase shifter and a first circuit, the second channel comprises a second phase shifter and a second circuit, the third channel comprises a fourth phase shifter and a third circuit, the first antenna is respectively connected with the first channel, the second channel and the third channel through the third phase shifter, the first circuit is connected with the first antenna through the first phase shifter, the second circuit is connected with the first antenna through the second phase shifter, and the third circuit is connected with the first antenna through the fourth phase shifter; the electronic equipment transmits signals of a first frequency band through a first channel and a first antenna, transmits signals of a second frequency band through a second channel and the first antenna, transmits signals of a third frequency band through a third channel and the first antenna, the first phase shifter is used for adjusting the impedance of the first antenna when transmitting signals of the second frequency band or the third frequency band, the second phase shifter is used for adjusting the impedance of the first antenna when transmitting signals of the first frequency band or the third frequency band, and the fourth phase shifter is used for adjusting the impedance of the first antenna when transmitting signals of the first frequency band or the second frequency band. When the first antenna is shared by the first frequency band, the second frequency band and the third frequency band, the performance of the first antenna on the second frequency band or the third frequency band is improved through the first phase shifter, the performance of the first antenna on the first frequency band or the third frequency band is improved through the second phase shifter, the performance of the first antenna on the second frequency band or the third frequency band is improved through the fourth phase shifter, and then the performance requirements of the first frequency band, the second frequency band and the third frequency band can be met by the first antenna at the same time, and the performance of the electronic equipment working in a plurality of frequency bands is improved.

With reference to the first aspect, in certain implementations of the first aspect, the operating frequency band of the electronic device includes a first frequency band and a second frequency band.

With reference to the first aspect, in some implementations of the first aspect, the electronic device is configured to receive a signal in a first frequency band through a first channel, and receive a signal in a second frequency band through a second channel.

In a second aspect, an impedance matching method is applied to an electronic device, where the electronic device includes a first channel, a second channel, and a first antenna, the first channel includes a first circuit and a first phase shifter, the first antenna is connected to the first channel and the second channel, respectively, and the first circuit is connected to the first antenna through the first phase shifter, and the method includes:

transmitting signals of a first frequency band through a first channel and a first antenna;

signals of a second frequency band are transmitted through the second channel and the first antenna, wherein,

Transmitting signals of a second frequency band through a second channel and a first antenna, comprising:

the impedance of the first antenna is adjusted by the first phase shifter when transmitting signals of the second frequency band through the second channel and the first antenna.

With reference to the second aspect, in some implementations of the second aspect, the second channel includes a second circuit and a second phase shifter, the second circuit is connected to the first antenna through the second phase shifter, and the signal of the first frequency band is transmitted through the first channel and the first antenna, including: when the signal of the first frequency band is transmitted through the first channel and the first antenna, the impedance of the first antenna is adjusted through the second phase shifter.

With reference to the second aspect, in some implementations of the second aspect, the electronic device further includes a third phase shifter, the first antenna is connected to the first channel and the second channel through the third phase shifter, and the signal in the first frequency band is transmitted through the first channel and the first antenna, including: when the signal of the first frequency band is transmitted through the first channel and the first antenna, the impedance of the first antenna is adjusted through the third phase shifter; transmitting signals of a second frequency band through a second channel and a first antenna, comprising: and when the signal in the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the third phase shifter.

With reference to the second aspect, in certain implementations of the second aspect, the second channel includes a second circuit and a second phase shifter, the electronic device further includes a third channel including a third circuit and a fourth phase shifter, the second circuit is connected to the first antenna through the second phase shifter, and the third circuit is connected to the first antenna through the fourth phase shifter, the method further includes: transmitting signals of a third frequency band through a third channel and the first antenna; wherein transmitting signals in a third frequency band through a third channel and the first antenna comprises: when the signal of the third frequency band is transmitted through the third channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter and the second phase shifter; transmitting signals of a first frequency band through a first channel and a first antenna, comprising: when the signal of the first frequency band is transmitted through the first channel and the first antenna, the impedance of the first antenna is adjusted through the second phase shifter and the fourth phase shifter; transmitting signals of a second frequency band through a second channel and a first antenna, comprising: when the signal of the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter and the fourth phase shifter.

With reference to the second aspect, in some implementations of the second aspect, the operating frequency band of the electronic device includes a first frequency band and a second frequency band.

With reference to the second aspect, in certain implementations of the second aspect, the method further includes: receiving a signal of a first frequency band through a first channel; and receiving signals of a second frequency band through a second channel.

The electronic equipment comprises a first channel, a second channel and a first antenna, wherein the first channel comprises a first phase shifter and a first circuit, the first antenna is respectively connected with the first channel and the second channel, and the first circuit is connected with the first antenna through the first phase shifter; the electronic equipment transmits the signal of the first frequency band through the first channel and the first antenna, and transmits the signal of the second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signal of the second frequency band, so that the first antenna can only meet the performance requirement of the first frequency band due to narrower working bandwidth, but can not meet the performance requirement of the second frequency band, the impedance of the first antenna in the second frequency band is adjusted through the first phase shifter, and then the performance of the first antenna can meet the performance requirement of the second frequency band, which is equivalent to enabling the first antenna to meet the performance requirements of the first frequency band and the second frequency band at the same time, and the performance of the electronic equipment working at two frequency bands at the same time is improved.

Drawings

Fig. 1 is a schematic structural diagram of a terminal device suitable for use in the present application;

Fig. 2 is a schematic view of a scenario suitable for an impedance matching method according to an embodiment of the present application;

fig. 3 is a schematic view of a scenario suitable for an impedance matching method according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a phase shifter according to an embodiment of the present application;

Fig. 6 is an equivalent circuit diagram of an electronic device in a second frequency band according to an embodiment of the present application;

FIG. 7 is a schematic diagram of an electronic device;

fig. 8 is a schematic structural diagram of another electronic device according to an embodiment of the present application;

Fig. 9 is an equivalent circuit diagram of an electronic device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another electronic device according to an embodiment of the present application;

fig. 11 is an equivalent circuit diagram of an electronic device according to an embodiment of the present application;

Fig. 12 is a schematic structural diagram of another electronic device according to an embodiment of the present application;

fig. 13 is a schematic flow chart of an impedance matching method according to an embodiment of the present application;

fig. 14 is a schematic flow chart of an impedance matching method according to an embodiment of the present application;

fig. 15 is a schematic flow chart of an impedance matching method according to an embodiment of the present application;

fig. 16 is a flow chart of an impedance matching method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Wherein, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first," "second," "third," and the like, are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature.

At this stage, with the development of multiple input multiple output (Multiple Input Multiple Output, MIMO) technology, terminal devices typically operate in at least two operating frequency bands. As the number of electronic devices provided in the terminal device increases, the space allocated to the antenna by the terminal device decreases, which results in two operating frequency bands sharing one antenna. For example, the operating frequency band of the terminal device includes frequency band 1 and frequency band 2, where the interval between frequency band 1 and frequency band 2 is small, frequency band 1 and frequency band 2 may share one antenna (such as antenna 1). Since the space in the terminal device is reduced, the space allocated for each antenna is reduced, which results in the narrowing of the operating bandwidth of the antenna as the space of the antenna size is reduced, and thus the antenna 1 cannot meet the performance requirements of the frequency band 1 and the frequency band 2 at the same time. In the case where the performance of the antenna 1 is biased toward the band 1, the performance of the band 2 is degraded; in the case where the performance of the antenna 1 is biased toward the frequency band 2, the performance of the frequency band 1 is degraded, resulting in poor performance of the terminal device when operating in the FDD mode.

In view of this, an embodiment of the present application provides an electronic device and an impedance matching method, including a first channel, a second channel, and a first antenna, where the first channel includes a first phase shifter and a first circuit, and the first antenna is connected to the first channel and the second channel, respectively, and the first circuit is connected to the first antenna through the first phase shifter; the electronic equipment transmits the signal of the first frequency band through the first channel and the first antenna, and transmits the signal of the second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signal of the second frequency band, so that the first antenna can only meet the performance requirement of the first frequency band due to narrower working bandwidth, but can not meet the performance requirement of the second frequency band, the impedance of the first antenna in the second frequency band is adjusted through the first phase shifter, and then the performance of the first antenna can meet the performance requirement of the second frequency band, which is equivalent to enabling the first antenna to meet the performance requirements of the first frequency band and the second frequency band at the same time, and the performance of the electronic equipment working in two frequency bands is improved.

The impedance matching method provided by the embodiment of the application can be applied to electronic equipment. Optionally, the electronic device includes a terminal device, which may also be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and so on. The terminal device may be a mobile phone, a smart television, a wearable device, a tablet (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self-driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

By way of example, fig. 1 shows a schematic diagram of an electronic device 100. The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It should be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (IMAGE SIGNAL processor, ISP), a controller, a memory, a video codec, a digital signal processor (DIGITAL SIGNAL processor, DSP), a baseband processor, and/or a neural Network Processor (NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

The controller may be a neural hub and a command center of the electronic device 100, among others. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby improving the efficiency of the system.

In one possible scenario, the electronic device 100 includes multiple antennas, and illustratively, the electronic device 100 includes 2 antennas. Wherein the 2 antennas are respectively an antenna 1 and an antenna 2. The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (WIRELESS FIDELITY, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation SATELLITE SYSTEM, GNSS), frequency modulation (frequency modulation, FM), near field communication (NEAR FIELD communication, NFC), infrared (IR), etc., applied to the electronic device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In one possible scenario, the wireless communication module 160 may receive the signals to be transmitted in two frequency bands from the processor 110, frequency-modulate the signals through different channels, amplify the signals, and then convert the signals to electromagnetic waves through the antenna 2. Equivalent to the requirement that the antenna 2 meet the performance requirements of both frequency bands simultaneously.

In some embodiments, antenna 1 and mobile communication module 150 of electronic device 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that electronic device 100 may communicate with a network and other devices through wireless communication techniques. The wireless communication techniques can include a global system for mobile communications (global system for mobile communications, GSM), a general packet radio service (GENERAL PACKET radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), a fifth generation wireless communication system (5G,the 5th Generation of wireless communication system), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation SATELLITE SYSTEM, GLONASS), a beidou satellite navigation system (beidou navigation SATELLITE SYSTEM, BDS), a quasi zenith satellite system (quasi-zenith SATELLITE SYSTEM, QZSS) and/or a satellite based augmentation system (SATELLITE BASED AUGMENTATION SYSTEMS, SBAS).

It should be noted that any of the electronic devices mentioned in the embodiments of the present application may include more or fewer modules in the electronic device 100.

The software system of the electronic device 100 may employ a layered architecture, an event driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture.

The application scenario provided by the embodiment of the application is described below with reference to the accompanying drawings.

Fig. 2 is a schematic diagram of a scenario suitable for an impedance matching method according to an embodiment of the present application. As shown in fig. 2, the electronic device may refer to a terminal device, such as a mobile phone. The terminal equipment comprises a first channel, a second channel and a first antenna. The first antenna is connected with the first channel and the second channel respectively. The working frequency band of the terminal equipment comprises a frequency band 1 and a frequency band 2. The terminal device transmits the signals of the frequency band 1 through the first channel and the first antenna, and transmits the signals of the frequency band 2 through the second channel and the first antenna. The frequency band 1 and the frequency band 2 corresponding to the terminal device share one antenna (first antenna).

It should be understood that the number of operating frequency bands of the terminal device may be more than 2. In the case that the number of the operating frequency bands of the terminal device is greater than 2, the plurality of frequency bands may share one antenna, or may share one antenna with 2 antennas, which is not limited in the embodiment of the present application.

For example, in the case where the operating frequency band of the terminal device includes frequency band 1, frequency band 2, frequency band 3, frequency band 4, and frequency band 5, frequency band 1 and frequency band 2 may share antenna 1, and frequency band 3, frequency band 4, and frequency band 5 share antenna 2.

For example, in the case where the operating frequency band of the terminal device includes frequency band 1, frequency band 2, frequency band 3, frequency band 4, and frequency band 5, frequency band 1, frequency band 2, frequency band 3, frequency band 4, and frequency band 5 share the antenna 1.

Fig. 3 is a schematic view of a scenario suitable for an impedance matching method according to an embodiment of the present application. As shown in fig. 3, the electronic apparatus 1, the electronic apparatus 2, and the electronic apparatus 3 are included. The electronic device 1 is connected to the electronic device 2 and the electronic device 3, respectively. The electronic device 2 outputs a first signal, which may be a signal for satellite positioning, and the electronic device 3 outputs a second signal, which may be a signal for navigation through the global positioning system (Global Positioning System, GPS). Wherein the frequency bands of the first signal and the second signal are different. The electronic device 1 comprises a first channel and a second channel, the electronic device 1 receives a first signal sent by the electronic device 2 through the first channel, and then the first signal is transmitted through a first antenna; the electronic device 1 receives the second signal sent by the electronic device 3 via the second channel and then transmits the second signal via the first antenna. This corresponds to the first antenna being shared by band 1 and band 2.

It should be understood that the foregoing is illustrative of an application scenario, and is not intended to limit the application scenario of the present application in any way.

The electronic device and the impedance matching method according to the embodiments of the present application are described in detail below with reference to fig. 4 to 12.

Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 4, the electronic device 100 includes a first channel 110, a second channel 120, and a first antenna 130, the first channel 110 includes a first phase shifter 111 and a first circuit 112, the first antenna 130 is connected to the first channel 110 and the second channel 120 respectively, and the first circuit 112 is connected to the first antenna 130 through the first phase shifter 111; the electronic device 100 transmits a signal in a first frequency band through the first channel 110 and the first antenna 130, transmits a signal in a second frequency band through the second channel 120 and the first antenna 130, and the first phase shifter 111 is configured to adjust the impedance of the first antenna 130 when transmitting the signal in the second frequency band.

Wherein the first channel 110 comprises a first circuit 112 and a first phase shifter 111. The first circuit 112 may include a radio frequency switch, a filter, etc. It should be appreciated that the electronic device transmits signals in the first frequency band through the first channel 110 and the first antenna 130, that is, the first circuit 112 and the first phase shifter 111 in the first channel 110 operate in the first frequency band. The operating frequency band of the electronic devices (e.g., radio frequency switch, filter) in the first circuit 112 is the first frequency band. For example, the filter in the first circuit 112 may be a filter that performs band-pass filtering on the first frequency band, which corresponds to a signal passing through the filter, and a signal in the first frequency band may normally pass through the filter, and a signal outside the first frequency band is suppressed by the filter.

In general, since the isolation of the filter is generally high, the filter is generally disposed on the first circuit 112 at a position closest to the first antenna 130. In this way, when the electronic device 100 transmits the signal in the second frequency band, the first circuit 112 participates in impedance matching of the first antenna 130, so as to influence the impedance of the first antenna 130, thereby causing performance degradation.

The first channel 110 may further include a first phase shifter 111.

It should be appreciated that the first phase shifter 111 may adjust the impedance of the first antenna 130 when the electronic device 100 transmits the signal in the second frequency band, so that the impedance of the first antenna 130 is closer to 50Ω, and thus the performance of the first antenna 130 is better. This corresponds to the first channel 110 being a matching circuit for the first antenna 130 in the second frequency band, and the impedance of the first antenna 130 is adjusted by adjusting the first phase shifter 111.

The first phase shifter 111 may be a circuit network composed of a capacitor and an inductor. As shown in fig. 5, the first phase shifter 111 may be a pi-type circuit network composed of an inductance and a capacitance. Through the first phase shifter 111, the impedance of the first antenna 130 in the second frequency band can be adjusted, so that the impedance of the first antenna 130 in the second frequency band is closer to 50Ω, and further, the performance of the first antenna 130 in the second frequency band is better.

It should be understood that. The first phase shifter 111 may increase the phase (corresponding to the impedance rotating clockwise on the smith chart) or decrease the phase (corresponding to the impedance rotating counterclockwise on the smith chart), which is not limited by the embodiment of the application.

Illustratively, as shown in (a) of fig. 5, the first phase shifter 111 is a pi-type circuit network composed of one capacitor and two inductors. The capacitance of the capacitor is 4PF, the inductance of the inductor is 17nH, and the first phase shifter 111 increases the phase of the impedance of the first antenna, which corresponds to the impedance of the first antenna rotating clockwise on the smith chart.

Illustratively, as shown in (b) of fig. 5, the first phase shifter 111 is a pi-type circuit network composed of two capacitors and one inductor. The capacitance of the capacitor is 0.7PF, the inductance of the inductor is 3nH, and the first phase shifter 111 reduces the phase of the impedance of the first antenna, which corresponds to the impedance of the first antenna rotating counterclockwise on the smith chart.

The second channel 120 may also include a second circuit 121, and the second circuit 121 may include an electronic device such as a radio frequency switch, a filter, and the like. It should be appreciated that the electronic device transmits signals in the second frequency band through the second channel 120 and the first antenna 130, that is, the operating frequency band of the electronic devices (e.g., radio frequency switches, filters) in the second circuit 121 is the second frequency band. For example, the filter in the second circuit 121 may be a filter that performs band-pass filtering on the second frequency band, and the signal in the second frequency band may normally pass through the filter, and the signal outside the second frequency band may be suppressed by the filter.

In general, since the isolation of the filter is generally high, the filter is generally disposed on the second circuit 121 at a position closest to the first antenna 130. In this way, when the electronic device 100 transmits the signal in the first frequency band, the second circuit 121 participates in impedance matching of the first antenna 130, so as to influence the impedance of the first antenna 130, thereby causing performance degradation.

Since the electronic device transmits the signal in the first frequency band through the first channel 110 and the first antenna 130, and transmits the signal in the second frequency band through the second channel 120 and the first antenna 130, the signal is transmitted by sharing the first antenna 130 between the first frequency band and the second frequency band, so that the requirement on the working bandwidth of the first antenna 130 is higher. That is, the operating bandwidth of the first antenna 130 is greater than the preset threshold value, so as to meet the requirements of the first frequency band and the second frequency band. However, the operating bandwidth of the antenna is also narrowed, as a result of the smaller space available in the electronic device. Therefore, the operating bandwidth of the first antenna 130 is typically less than a preset threshold. This results in the performance of the first antenna 130 not meeting the requirements of both the first frequency band and the second frequency band. According to the electronic device provided by the embodiment of the application, when the electronic device works in the second frequency band, the first channel 110 is used as the matching circuit of the first antenna 130, so that the impedance of the first antenna 130 is adjusted, the performance of the first antenna 130 in the second frequency band is further improved, and the performance requirement of the second frequency band is met.

The principle of how the impedance of the first antenna 130 is adjusted by the first phase shifter 111 is explained below with reference to fig. 6 and 7.

Fig. 6 is an equivalent circuit diagram of the electronic device 100 shown in fig. 4 when operating in the second frequency band. As shown in fig. 6, when the electronic device 100 operates in the second frequency band, looking into the first path 110 from the second path 120, a capacitor is connected in parallel. As shown in fig. 6, the circle in the figure is a schematic diagram of the impedance of the first antenna in the smith chart, wherein the impedance position of the first antenna without the first phase shifter is the position shown by the broken line in fig. 6, and the impedance position of the first antenna with the first phase shifter is the position shown by the solid line in fig. 6. As can be seen from fig. 6, after the first phase shifter is added, the impedance of the first antenna is shifted toward the center of the circle, which is equivalent to more nearly 50Ω.

It should be appreciated that by properly adjusting the phase shifter, when the electronic device 100 is operating in the second frequency band, looking into the first path 110 from the second path 120, an inductance may be equivalently connected in parallel.

An example of an electronic device without the addition of the first phase shifter 110 is shown in fig. 7. In the electronic device shown in fig. 7, compared with the electronic device shown in fig. 4, only the first phase shifter 111 is added to the first channel 110, and the rest parts are the same.

When the impedance of the first antenna 130 in the electronic device shown in fig. 7 in the second frequency band is at the upper left of 50Ω, the first phase shifter 110 may be adjusted to be equivalent to the equivalent inductance, which is equivalent to adjusting the impedance of the first antenna 130 in the electronic device shown in fig. 4 to the lower left, so that the impedance of the first antenna 130 is closer to 50Ω, and the performance of the first antenna 130 is better.

When the impedance of the first antenna 130 in the electronic device shown in fig. 7 in the second frequency band is at the upper right of 50Ω, the first phase shifter 110 may be adjusted to be an equivalent capacitance, which is equivalent to adjusting the impedance of the first antenna 130 in the electronic device shown in fig. 4 to the lower right, so that the impedance of the first antenna 130 is closer to 50Ω, and the performance of the first antenna 130 is better.

In one possible scenario, the electronic device itself may operate in both the first frequency band and the second frequency band, as shown in fig. 2. At this time, the operating frequency band (first frequency band and second frequency band) of the electronic device shares one antenna (first antenna).

In one possible scenario, the electronic device may receive signals in the first frequency band and the second frequency band transmitted by other electronic devices, and then transmit the received signals through an antenna on the electronic device. For example, as shown in fig. 3, the electronic device 1 includes a first antenna, a first channel, and a second channel. The electronic device 2 may be a satellite antenna ground station for outputting satellite signals and the electronic device 3 may be a GPS positioning system for outputting GPS positioning signals. A first channel in the electronic equipment 1 is connected with the electronic equipment 2, receives satellite signals, and then the electronic equipment 1 sends out the satellite signals through a first antenna; the second channel in the electronic device 1 is connected to the electronic device 3 for receiving the GPS positioning signal, and then the electronic device 1 sends out the GPS positioning signal through the first antenna.

In order to further improve the performance of the first antenna, a second phase shifter may be added to the second channel to adjust the impedance of the first antenna when the first antenna works in the first frequency band, so that the performance of the first antenna can meet the performance requirement of the first frequency band. Described in detail below by way of the embodiment shown in fig. 8 and 9.

Fig. 8 is a schematic structural diagram of an electronic device according to another embodiment of the present application, as shown in fig. 8, the electronic device 100 includes a first channel 110, a second channel 120 and a first antenna 130, the first channel 110 includes a first phase shifter 111 and a first circuit 112, the second channel 120 includes a second phase shifter 121 and a second circuit 122, the first antenna 130 is connected to the first channel 110 and the second channel 120 respectively, wherein the first circuit 112 is connected to the first antenna 130 through the first phase shifter 111, and the second circuit 122 is connected to the first antenna 130 through the second phase shifter 121; the electronic device 100 transmits a signal in a first frequency band through the first channel 110 and the first antenna 130, transmits a signal in a second frequency band through the second channel 120 and the first antenna 130, the first phase shifter 111 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the second frequency band, and the second phase shifter 121 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the first frequency band.

The second channel 120 includes a second phase shifter 121 and a second circuit 122, and the second circuit 122 may include a radio frequency switch, a filter, and the like. The electronic device transmits signals in a second frequency band through the second channel 120 and the first antenna 130, that is, the second circuit 122 in the second channel 120 and the first phase shifter 111 operate in the second frequency band. The operating frequency band of the electronic devices (e.g., rf switch, filter) in the second circuit 122 is the second frequency band. For example, the filter in the second circuit 122 may be a filter that performs band-pass filtering on the second frequency band, which corresponds to a signal passing through the filter, and a signal in the second frequency band may normally pass through the filter, and a signal outside the second frequency band is suppressed by the filter.

In general, since the isolation of the filter is generally high, the filter is generally disposed on the second circuit 122 at a position closest to the first antenna 130. In this way, when the electronic device 100 transmits the signal in the second frequency band, the second circuit 122 participates in impedance matching of the first antenna 130, so as to influence the impedance of the first antenna 130, thereby causing performance degradation.

It should be appreciated that the second phase shifter 121 may adjust the impedance of the first antenna 130 when the electronic device 100 transmits the signal in the second frequency band, so that the impedance of the first antenna 130 is closer to 50Ω, and thus the performance of the first antenna 130 is better. In this way, the impedance of the first antenna 130 is adjusted by adjusting the second phase shifter 121, corresponding to the second channel 120 being a matching circuit of the first antenna 130 in the first frequency band.

The second phase shifter 121 may be a circuit network composed of a capacitor and an inductor. As shown in fig. 5, the second phase shifter 121 may be a pi-type circuit network composed of an inductance and a capacitance. Through the second phase shifter 121, the impedance of the first antenna 130 in the first frequency band can be adjusted, so that the impedance of the first antenna 130 in the first frequency band is closer to 50Ω, and further, the performance of the first antenna 130 in the first frequency band is better.

It should be understood that. The second phase shifter 121 may increase the phase (corresponding to the impedance rotating clockwise on the smith chart) or decrease the phase (corresponding to the impedance rotating counterclockwise on the smith chart), which is not limited by the embodiment of the application.

The principle of how the impedance of the first antenna 130 is adjusted by the first phase shifter 111 and the second phase shifter 121 is explained below.

Fig. 9 is an equivalent circuit diagram of the electronic device 100 shown in fig. 8. As shown in fig. 9, when the electronic device 100 operates in the first frequency band, looking from the first path 110 to the second path 120, an inductance is equivalent to a parallel connection. As shown in fig. 9, the circle in the figure is a schematic diagram of the impedance of the first antenna in the smith chart, wherein the impedance position of the first antenna without the second phase shifter is the position shown by the broken line in fig. 9, and the impedance position of the first antenna with the second phase shifter is the position shown by the solid line in fig. 9. As can be seen from fig. 9, after adding the second phase shifter, the impedance of the first antenna moves toward the center of the circle, which is equivalent to more nearly 50Ω.

It should be appreciated that by properly adjusting the phase shifter, when the electronic device 100 is operating in the first frequency band, looking from the first path 110 to the second path 120, it may be equivalent to having a capacitor in parallel.

When the electronic device 100 is operating in the second frequency band, looking into the first path 110 from the second path 120, a capacitance is connected in parallel. As shown in fig. 6, the circle in the figure is a schematic diagram of the impedance of the first antenna in the smith chart, wherein the impedance position of the first antenna without the first phase shifter is the position shown by the broken line in fig. 6, and the impedance position of the first antenna with the first phase shifter is the position shown by the solid line in fig. 6. As can be seen from fig. 6, after the first phase shifter is added, the impedance of the first antenna is shifted toward the center of the circle, which is equivalent to more nearly 50Ω.

An example of an electronic device without the addition of the first phase shifter 110 is shown in fig. 7. In the electronic device shown in fig. 7, compared with the electronic device shown in fig. 8, the first phase shifter 111 is added only to the first channel 110, the second phase shifter 121 is added to the second channel 120, and the rest parts are the same.

When the impedance of the first antenna 130 in the electronic device shown in fig. 7 in the second frequency band is at the upper left of 50Ω, a first phase shifter 111 is added to the electronic device shown in fig. 7, so as to obtain the first channel 110 of the electronic device 100 shown in fig. 8. By adjusting the matching of the first phase shifter 111, the first phase shifter 111 is equivalent to an inductor in the second frequency band, which is equivalent to adjusting the impedance of the first antenna 130 of the electronic device shown in fig. 8 to the right lower side, so that the impedance of the first antenna 130 is closer to 50Ω, and further, the performance of the first antenna 130 is better.

When the impedance of the first antenna 130 in the electronic device shown in fig. 7 is at the lower left side of 50Ω, a second phase shifter 121 is added to the electronic device shown in fig. 7, so as to obtain the second channel 120 of the electronic device 100 shown in fig. 8. By adjusting the matching of the second phase shifter 121, the second phase shifter 121 is equivalent to a capacitor in the first frequency band, which is equivalent to adjusting the impedance of the first antenna 130 of the electronic device shown in fig. 8 to the upper right, so that the impedance of the first antenna 130 is closer to 50Ω, and the performance of the first antenna 130 is better.

Since the first phase shifter or the second phase shifter can be equivalent to inductance or capacitance, the first phase shifter and the second phase shifter can adjust the impedance of the first antenna. Typically the antenna impedance is made up of real and imaginary parts. In one possible case, the imaginary part of the impedance of the first antenna can be adjusted to around 50Ω by the first phase shifter and the second phase shifter, but the real part of the first antenna cannot be adjusted to around 50Ω, and therefore, the first antenna needs to be connected in series with one phase shifter to adjust the impedance of the first antenna. The following is a detailed description of the embodiment shown in fig. 10.

Fig. 10 is a schematic structural diagram of an electronic device according to another embodiment of the present application, as shown in fig. 10, the electronic device 100 includes a first channel 110, a second channel 120, a first antenna 130, and a third phase shifter 140, the first channel 110 includes a first phase shifter 111 and a first circuit 112, the second channel 120 includes a second phase shifter 121 and a second circuit 122, the first antenna 130 is connected to the first channel 110 and the second channel 120 through the third phase shifter 140, respectively, wherein the first circuit 112 is connected to the first antenna 130 through the first phase shifter 111, and the second circuit 122 is connected to the first antenna 130 through the second phase shifter 121; the electronic device 100 transmits a signal in a first frequency band through the first channel 110 and the first antenna 130, transmits a signal in a second frequency band through the second channel 120 and the first antenna 130, the first phase shifter 111 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the second frequency band, the second phase shifter 121 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the first frequency band, and the third phase shifter 140 is used for adjusting the impedance of the first antenna 130 in the first frequency band and the second frequency band.

It should be appreciated that the third phase shifter 140 may adjust the phase of the impedance of the first antenna 130 when the electronic device 100 transmits the signal in the first frequency band or the second frequency band, so that the impedance of the first antenna 130 is closer to 50Ω, and thus the performance of the first antenna 130 is better. Since the first antenna 130 is connected to the first and second channels 110 and 120, respectively, through the third phase shifter 140, the third phase shifter 140 can change the phase of the impedance of the first antenna 130. Since the first phase shifter 111 and the second phase shifter 121 may be equivalent to a parallel capacitor or inductor, the third phase shifter 140 may change the phase of the impedance of the first antenna 130, and the rotation path of the parallel electronic device on the smith chart may be different from the rotation path of the changed phase on the smith chart. Therefore, the impedance of the first antenna 130 is adjusted to a position to which the first phase shifter 111 or the second phase shifter 121 cannot be adjusted by the third phase shifter 140.

For example, as shown in fig. 11, when the electronic device 100 is operating in the first frequency band, the second phase shifter 121 may be equivalently a capacitor connected in parallel. When the electronic device 100 is operating in the second frequency band, the first phase shifter 111 may be equivalently a capacitor connected in parallel. As shown in the smith chart a of fig. 11, the impedance through the first phase shifter 111 and the second phase shifter 121 is shown, and as can be seen from the smith chart a, there is still a certain distance between the impedance distances 50Ω through the first channel 110 and the second channel 120. Since the parallel capacitance rotates the path on the smith chart in accordance with the preset path, the impedance of the first antenna 130 cannot be adjusted to 50Ω by merely adjusting the first phase shifter 111 and the second phase shifter 121. The impedance of the first antenna 130 can be adjusted to 50Ω by changing the phase of the impedance by the third phase shifter 140, as shown in smith chart B in fig. 11.

The third phase shifter 140 may be a circuit network composed of a capacitor and an inductor. As shown in fig. 5, the third phase shifter 140 may be a pi-type circuit network composed of an inductance and a capacitance. The phase of the impedance of the first antenna 130 in the first frequency band can be adjusted by the third phase shifter 140, so that the impedance of the first antenna 130 in the first frequency band is closer to 50Ω, and the performance of the first antenna 130 in the first frequency band is better. The phase of the impedance of the first antenna 130 in the second frequency band can be adjusted by the third phase shifter 140, so that the impedance of the first antenna 130 in the second frequency band is closer to 50Ω, and the performance of the first antenna 130 in the first frequency band is better.

It should be understood that. The third phase shifter 140 may increase the phase (corresponding to the impedance rotating clockwise on the smith chart) or decrease the phase (corresponding to the impedance rotating counterclockwise on the smith chart), which is not limited by the embodiment of the application.

In one possible scenario, the electronic device operates in multiple frequency bands simultaneously. The electronic device is illustratively operated in three frequency bands simultaneously, which share an antenna. The three frequency bands comprise a first frequency band, a second frequency band and a third frequency band, and the antenna in the electronic equipment comprises a first antenna. The first frequency band, the second frequency band and the third frequency band share a first antenna. In this case, the electronic device may include a first channel, a second channel, a third channel, and a first antenna. The electronic equipment transmits signals of a first frequency band through a first channel and a first antenna, transmits signals of a second frequency band through a second channel and the first antenna, and transmits signals of a third frequency band through a third channel and the first antenna. The third channel may also include a third circuit and a fourth phase shifter based on the above embodiments. When the electronic equipment works in the first frequency band, the impedance of the first antenna in the first frequency band is adjusted through the fourth phase shifter, so that the performance of the first antenna in the first frequency band is better; or when the electronic equipment works in the second frequency band, the impedance of the first antenna in the second frequency band is adjusted through the fourth phase shifter, so that the performance of the first antenna in the second frequency band is better.

It should be understood that sharing one antenna for three frequency bands of the above-described electronic device is only one example. In one possible scenario, more frequency bands in the electronic device may also share one antenna. For example, 4 frequency bands in the electronic device share one antenna, or 7 frequency bands in the electronic device share one antenna.

In the electronic device, the antenna is shared by a plurality of frequency bands, the implementation principle of adjusting the impedance of the antenna through the phase shifters on different paths is similar to the implementation principle of sharing the impedance of three frequency bands, and the implementation principle of adjusting the impedance of the antenna through the phase shifters is not repeated here.

The detailed procedure of how the impedance of the first antenna is adjusted by the phase shifter in the case where the electronic device operates in the first frequency band, the second frequency band, and the third frequency band simultaneously will be described in detail by the embodiment shown in fig. 12.

Fig. 12 is a schematic structural diagram of an electronic device according to another embodiment of the present application, as shown in fig. 12, the electronic device 100 includes a first channel 110, a second channel 120, a first antenna 130, a third phase shifter 140 and a third channel 150, the first channel 110 includes a first phase shifter 111 and a first circuit 112, the second channel 120 includes a second phase shifter 121 and a second circuit 122, the third channel 150 includes a fourth phase shifter 151 and a third circuit 152, the first antenna 130 is connected to the first channel 110, the second channel 120 and the third channel 150 through the third phase shifter 140, respectively, wherein the first circuit 112 is connected to the first antenna 130 through the first phase shifter 111, the second circuit 122 is connected to the first antenna 130 through the second phase shifter 121, and the third circuit 152 is connected to the first antenna through the fourth phase shifter 151; the electronic device 100 transmits a signal in a first frequency band through the first channel 110 and the first antenna 130, transmits a signal in a second frequency band through the second channel 120 and the first antenna 130, transmits a signal in a third frequency band through the third channel 150 and the first antenna 130, the first phase shifter 111 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the second frequency band or the third frequency band, the second phase shifter 121 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the first frequency band or the third frequency band, the fourth phase shifter 151 is used for adjusting the impedance of the first antenna 130 when transmitting the signal in the first frequency band or the second frequency band, and the third phase shifter 140 is used for adjusting the impedance of the first antenna 130 in the first frequency band and the second frequency band.

The third channel 150 includes a fourth phase shifter 151 and a third circuit 152, and the third circuit 152 may include a radio frequency switch, a filter, and the like. The electronic device transmits the signal in the third frequency band through the third channel 150 and the first antenna 130, that is, the operating frequency band of the third circuit 152 and the fourth phase shifter 151 in the third channel 150 is the third frequency band. The operating frequency band of the electronic devices (e.g., rf switch, filter) in the third circuit 152 is the third frequency band. For example, the filter in the third circuit 152 may be a filter that performs band-pass filtering on the third frequency band, and the signal in the third frequency band may normally pass through the filter, and the signal outside the third frequency band may be suppressed by the filter, which corresponds to the signal passing through the filter.

In general, since the isolation of the filter is generally high, the filter is generally disposed on the third circuit 152 at a position closest to the first antenna 130. In this way, when the electronic device 100 transmits the signal in the third frequency band, the third circuit 152 participates in impedance matching of the first antenna 130, so as to influence the impedance of the first antenna 130, thereby causing performance degradation.

It should be appreciated that the fourth phase shifter 151 may adjust the impedance of the first antenna 130 when the electronic device 100 transmits the signal in the first frequency band or the second frequency band, so that the impedance of the first antenna 130 is closer to 50Ω, and thus the performance of the first antenna 130 is better. In this way, the impedance of the first antenna 130 is adjusted by adjusting the fourth phase shifter 151, corresponding to the third channel 150 being used as a matching circuit for the first antenna 130 in the first frequency band.

The fourth phase shifter 151 may be a circuit network composed of a capacitor and an inductor. As shown in fig. 5, the fourth phase shifter 151 may be a pi-type circuit network composed of an inductance and a capacitance. The fourth phase shifter 151 can adjust the impedance of the first antenna 130 in the first frequency band, so that the impedance of the first antenna 130 in the first frequency band is closer to 50Ω, and the performance of the first antenna 130 in the first frequency band is better; or through the fourth phase shifter 151, the impedance of the first antenna 130 in the second frequency band can be adjusted, so that the impedance of the first antenna 130 in the second frequency band is closer to 50Ω, and further, the performance of the first antenna 130 in the second frequency band is better.

It should be understood that. The fourth phase shifter 151 may increase the phase (corresponding to the impedance rotating clockwise on the smith chart) or decrease the phase (corresponding to the impedance rotating counterclockwise on the smith chart), which is not limited by the embodiment of the application.

It should be appreciated that in the case where the electronic device 100 operates in three frequency bands, when the electronic device 100 operates in the first frequency band, the impedance of the first antenna 130 in the first frequency band may be adjusted by the second phase shifter 121 and the fourth phase shifter 151; when the electronic device 100 operates in the second frequency band, the impedance of the first antenna 130 in the second frequency band may be adjusted by the first phase shifter 111 and the fourth phase shifter 151; when the electronic device 100 operates in the third frequency band, the impedance of the first antenna 130 in the first frequency band may be adjusted by the first phase shifter 111 and by the second phase shifter 121.

It should be understood that more (than 3) channels may be included in the electronic device, and these channels may share an antenna, and each channel may be used to transmit signals in a different frequency band, which corresponds to multiple frequency bands sharing an antenna. The scheme provided by the embodiment of the application is also suitable for the situation, and the implementation principle and beneficial effects are similar to those of the embodiment, and are not repeated here.

The embodiment of the application also provides an impedance matching method which is applied to the electronic equipment shown in the figures 4 to 12. The following is a detailed description of fig. 13 to 16.

In one embodiment, as shown in fig. 13, the impedance matching method is applied to an electronic device, where the electronic device includes a first channel, a second channel, and a first antenna, the first channel includes a first circuit and a first phase shifter, the first antenna is connected to the first channel and the second channel, respectively, and the first circuit is connected to the first antenna through the first phase shifter, and the method includes:

s101, transmitting signals of a first frequency band through a first channel and a first antenna.

S102, transmitting signals of a second frequency band through the second channel and the first antenna, wherein when the signals of the second frequency band are transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter.

In one embodiment, another impedance matching method is provided, as shown in fig. 14, and is applied to an electronic device that includes a first channel, a second channel, and a first antenna, the first channel including a first circuit and a first phase shifter. The second channel includes a second circuit and a second phase shifter, the first antenna is connected with the first channel and the second channel respectively, wherein the first circuit is connected with the first antenna through the first phase shifter, and the second circuit is connected with the first antenna through the second phase shifter, the method includes:

S201, when signals of a first frequency band are transmitted through a first channel and a first antenna, the impedance of the first antenna is adjusted through a second phase shifter.

S202, when signals of a second frequency band are transmitted through a second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter.

In one embodiment, another impedance matching method is provided, as shown in fig. 15, and the impedance matching method is applied to an electronic device, where the electronic device includes a first channel, a second channel, a third phase shifter, and a first antenna, and the first channel includes a first circuit and a first phase shifter. The second channel comprises a second circuit and a second phase shifter, the first antenna is respectively connected with the first channel and the second channel through a third phase shifter, wherein the first circuit is connected with the first antenna through the first phase shifter, and the second circuit is connected with the first antenna through the second phase shifter, and the method comprises the following steps:

S301, when a signal in a first frequency band is transmitted through a first channel and a first antenna, the impedance of the first antenna is adjusted through a third phase shifter.

S302, when signals of a second frequency band are transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the third phase shifter.

In one embodiment, another impedance matching method is provided, as shown in fig. 16, and the impedance matching method is applied to an electronic device, where the electronic device includes a first channel, a second channel, a third channel, and a first antenna, and the first channel includes a first circuit and a first phase shifter. The second channel includes a second circuit and a second phase shifter, the third channel includes a third circuit and a fourth phase shifter, the first antenna is connected with the first channel, the second channel, and the third channel, respectively, wherein the first circuit is connected with the first antenna through the first phase shifter, the second circuit is connected with the first antenna through the second phase shifter, and the third circuit is connected with the first antenna through the fourth phase shifter, the method includes:

s401, transmitting a signal of a third frequency band through the third channel and the first antenna, wherein when transmitting the signal of the third frequency band through the third channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter and the second phase shifter.

S402, when signals of a first frequency band are transmitted through a first channel and a first antenna, the impedance of the first antenna is adjusted through a second phase shifter and a fourth phase shifter.

It will be appreciated that in one possible scenario, where the electronic device does not include a second phase shifter, the impedance of the first antenna may be adjusted by a fourth phase shifter.

S403, when the signal of the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter and the fourth phase shifter.

It will be appreciated that in one possible scenario, where the electronic device does not include the first phase shifter, the impedance of the first antenna may be adjusted by the fourth phase shifter.

In an embodiment, an impedance matching method is provided, where an operating frequency band of an electronic device to which the impedance matching method is applied includes a first frequency band and a second frequency band.

In the impedance matching method provided in one embodiment, an electronic device to which the impedance matching method is applied receives a signal of a first frequency band through a first channel; and receiving signals of a second frequency band through a second channel.

The implementation principle and the beneficial effects of the impedance matching method are similar to those of the electronic device embodiment, and are not repeated here.

It should be understood that, although the steps in the flowcharts in the above embodiments are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the flowcharts may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order in which the sub-steps or stages are performed is not necessarily sequential, and may be performed in turn or alternately with at least a portion of the sub-steps or stages of other steps or other steps.

It will be appreciated that in order to achieve the above-described functionality, the electronic device comprises corresponding hardware and/or software modules that perform the respective functionality. The present application can be implemented in hardware or a combination of hardware and computer software, in conjunction with the example algorithm steps described in connection with the embodiments disclosed herein. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application in conjunction with the embodiments, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising a first channel, a second channel and a first antenna, wherein the first channel comprises a first circuit and a first phase shifter, the first antenna is respectively connected with the first channel and the second channel, and the first circuit is connected with the first antenna through the first phase shifter; the electronic equipment transmits signals of a first frequency band through the first channel and the first antenna, transmits signals of a second frequency band through the second channel and the first antenna, and the first phase shifter is used for adjusting the impedance of the first antenna when transmitting the signals of the second frequency band.

2. The electronic device of claim 1, wherein the second channel comprises a second circuit and a second phase shifter, the second circuit being coupled to the first antenna through the second phase shifter, the second phase shifter being configured to adjust an impedance of the first antenna when the electronic device is transmitting the signal in the first frequency band.

3. The electronic device according to claim 1 or 2, further comprising a third phase shifter, through which the first antenna is connected to the first channel and the second channel, respectively, the third phase shifter being configured to adjust the impedance of the first antenna in the first frequency band and the second frequency band.

4. An electronic device according to any one of claims 1 to 3, characterized in that the electronic device further comprises a third channel comprising a third circuit and a fourth phase shifter, the third circuit being connected to the first antenna via the fourth phase shifter, the electronic device transmitting signals of a third frequency band via the third channel and the first antenna, the fourth phase shifter being arranged to adjust the impedance of the first antenna when the electronic device transmits signals of the first frequency band and/or the electronic device transmits signals of the second frequency band.

5. The electronic device of any of claims 1-4, wherein the operating frequency band of the electronic device comprises the first frequency band and the second frequency band.

6. The electronic device of any of claims 1-4, wherein the electronic device is configured to receive signals of the first frequency band via the first channel and signals of the second frequency band via the second channel.

7. An impedance matching method, wherein the method is applied to an electronic device, the electronic device includes a first channel, a second channel and a first antenna, the first channel includes a first circuit and a first phase shifter, the first antenna is connected to the first channel and the second channel, respectively, and the first circuit is connected to the first antenna through the first phase shifter, the method includes:

Transmitting signals of a first frequency band through the first channel and the first antenna;

Transmitting signals of a second frequency band through the second channel and the first antenna, wherein,

The transmitting the signal of the second frequency band through the second channel and the first antenna includes:

And when the signal of the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter.

8. The method of claim 7, wherein the second channel comprises a second circuit and a second phase shifter, the second circuit being coupled to the first antenna through the second phase shifter, the transmitting the signal of the first frequency band through the first channel and the first antenna comprising:

and when the signal of the first frequency band is transmitted through the first channel and the first antenna, the impedance of the first antenna is adjusted through the second phase shifter.

9. The method of claim 7 or 8, wherein the electronic device further comprises a third phase shifter, the first antenna being connected to the first channel and the second channel respectively through the third phase shifter,

The transmitting the signal of the first frequency band through the first channel and the first antenna includes:

Adjusting the impedance of the first antenna through the third phase shifter when the signal of the first frequency band is transmitted through the first channel and the first antenna;

and when the signal of the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the third phase shifter.

10. The method of any of claims 7 to 9, wherein the second channel comprises a second circuit and a second phase shifter, the electronic device further comprising a third channel comprising a third circuit and a fourth phase shifter, the second circuit being connected to the first antenna through the second phase shifter, the third circuit being connected to the first antenna through the fourth phase shifter, the method further comprising:

Transmitting signals of a third frequency band through the third channel and the first antenna; wherein,

The transmitting the signal of the third frequency band through the third channel and the first antenna includes:

adjusting the impedance of the first antenna through the first phase shifter and the second phase shifter when transmitting the signal of the third frequency band through the third channel and the first antenna;

Adjusting the impedance of the first antenna through the second phase shifter and the fourth phase shifter when the signal of the first frequency band is transmitted through the first channel and the first antenna;

And when the signal of the second frequency band is transmitted through the second channel and the first antenna, the impedance of the first antenna is adjusted through the first phase shifter and the fourth phase shifter.

11. The method of any of claims 7 to 10, wherein the operating frequency band of the electronic device comprises the first frequency band and the second frequency band.

12. The method according to any one of claims 7 to 10, further comprising:

receiving signals of the first frequency band through the first channel;

And receiving the signal of the second frequency band through the second channel.