Antenna control circuit, control method thereof, and electronic device

Abstract

Embodiments of the present application provide an antenna control circuit and a control method thereof and an electronic device. The antenna control circuit comprises a transceiver controller, a first radio frequency front-end module, a second radio frequency front-end module, a first antenna and a second antenna. The first radio frequency front-end module is provided with a first switch and a first adjusting assembly. The transceiver controller is electrically connected to a first end of the first switch. A second end of the first switch is electrically connected to a first end of the first adjusting assembly. A second end of the first adjusting assembly is electrically connected to the first antenna. The second radio frequency front-end module is provided with a second switch and a second adjusting assembly. The transceiver controller is electrically connected to a first end of the second switch. A second end of the second switch is electrically connected to a first end of the second adjusting assembly. A second end of the second adjusting assembly is electrically connected to the second antenna. The gain difference between the first antenna and the second antenna is less than or equal to a preset threshold.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to an antenna control circuit and a control method thereof and an electronic device. BACKGROUND

[0002] A MIMO (Multiple Input Multiple Output) communication circuit technology is commonly used in an antenna control circuit to realize multiple transmission and multiple reception of a communication channel. The MIMO technology refers to that a plurality of transmitting antennas and receiving antennas are respectively arranged at a transmitting end and a receiving end, so that signals are transmitted and received through the plurality of antennas of the transmitting end and the receiving end, thereby improving communication quality. The MIMO can fully utilize space resources, and can multiply improve system channel capacity without increasing frequency spectrum resources and antenna transmitting power, thereby providing diversity gain and space division multiplexing gain for the system, and is one of key technologies of a wireless communication system.

[0003] During use of the electronic device, the antennas are easily blocked by a human body or an object, and unbalanced gain of the antennas occurs. Even a large gain difference of, for example, 10 dB (decibel) occurs between the two antennas, which seriously affects radiation and throughput performance of the multiple input multiple output communication device, and easily changes into a SISO (Single Input Single Output) state, thereby affecting communication quality. In the prior art, in order to reduce the gain difference between the plurality of antennas and avoid the electronic device changing from the MIMO state to the SISO state, a software algorithm processing is usually used to balance the gain between the plurality of antennas, so that the quality of the multiple signals received by the multiple input multiple output communication device is the same or similar.

[0004] However, the inventor finds in the research on the prior art that the technical solution of the software algorithm processing can only adjust the gain difference between the two antennas in a small range, and it is difficult to adjust the gain difference between the two antennas when the gain difference is large, and the electronic device is still easily in the SISO (Single Input Single Output) state. SUMMARY

[0005] In view of the above problems, the present application is proposed to provide an antenna control circuit and a control method thereof and an electronic device which overcome the above problems or at least partially solve the above problems.

[0006] To solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides an antenna control circuit, comprising: a transceiver controller, a first radio frequency front-end module, a second radio frequency front-end module, a first antenna, and a second antenna.

[0008] The first radio frequency front end module is provided with a first switch and a first adjusting component, the transceiver controller is electrically connected to a first end of the first switch, a second end of the first switch is electrically connected to a first end of the first adjusting component, and a second end of the first adjusting component is electrically connected to the first antenna.

[0009] The second radio frequency front end module is provided with a second switch and a second adjusting component, the transceiver controller is electrically connected to a first end of the second switch, a second end of the second switch is electrically connected to a first end of the second adjusting component, and a second end of the second adjusting component is electrically connected to the second antenna.

[0010] In a case where a gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting component to lower the gain of the first antenna, or controls the second switch to be closed, and the second adjusting component to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold.

[0011] In a second aspect, an electronic device is provided, which includes the antenna control circuit.

[0012] In a third aspect, an antenna control method is provided, which includes:

[0013] obtaining a gain of a first antenna;

[0014] obtaining a gain of a second antenna;

[0015] In a case where a gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting component to lower the gain of the first antenna, or controls the second switch to be closed, and the second adjusting component to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold.

[0016] In the embodiment of the present application, the antenna control circuit comprises a transceiver controller, a first radio frequency front end module, a second radio frequency front end module, a first antenna and a second antenna; the first radio frequency front end module is provided with a first switch and a first adjusting assembly, the transceiver controller is electrically connected to a first end of the first switch, a second end of the first switch is electrically connected to a first end of the first adjusting assembly, and a second end of the first adjusting assembly is electrically connected to the first antenna. The second radio frequency front end module is provided with a second switch and a second adjusting assembly, the transceiver controller is electrically connected to a first end of the second switch, a second end of the second switch is electrically connected to a first end of the second adjusting assembly, and a second end of the second adjusting assembly is electrically connected to the second antenna. In the case where the gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting assembly reduces the gain of the first antenna, or controls the second switch to be closed, and the second adjusting assembly reduces the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold. In this way, the gain difference between the second antenna and the first antenna can always be kept within the preset threshold range, avoiding a large gain difference between the two. Therefore, the technical solution that does not need to use a software algorithm can only be adjusted within a range where the gain difference between the antennas is small. That is, the combination of the first switch and the first adjusting assembly, and the combination of the second switch and the second adjusting assembly, can form a switching channel, which can achieve better adjustment when the gain difference between the first antenna and the second antenna is large, avoid the electronic device from being in a SISO (Single Input Single Output) state with reduced throughput, and enable the electronic device to have better communication quality.

[0017] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is one of the structure schematic diagrams of the antenna control circuit according to the embodiment of the present application;

[0020] Figure 2 is the second structure schematic diagram of the antenna control circuit according to the embodiment of the present application;

[0021] Figure 3 is the transmission process adjustment flowchart of the antenna control circuit according to the embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the receiving process adjustment flow of an antenna control circuit according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the transmission process circuit of an antenna control circuit according to an embodiment of this application;

[0024] Figure 6 This is a flowchart of the steps of an antenna control method described in an embodiment of this application.

[0025] Reference numerals: 10 – Transceiver controller; 20 – First RF front-end module; 30 – Second RF front-end module; 40 – First antenna; 50 – Second antenna; 21 – First power amplifier assembly; 22 – First adjustment assembly; 26 – First switch; 31 – Second power amplifier assembly; 32 – Second adjustment assembly; 36 – Second switch; 23 – First low-noise amplifier; 24 – First attenuator; 33 – Second low-noise amplifier; 34 – Second attenuator; 25 – First variable low-noise amplifier; 35 – Second variable low-noise amplifier; 41 – First filter; 51 – Second filter. Detailed Implementation

[0026] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0027] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] In the description of the present application, it is to be understood by those skilled in the art that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Referring to Figures 1-2 , a structure schematic diagram of an antenna control circuit is shown. Referring to Figure 3 , a transmission process adjustment flowchart of an antenna control circuit is shown. Referring to Figure 4 , a receiving process adjustment flowchart of an antenna control circuit is shown. Referring to Figure 5 , a transmission process circuit schematic diagram of an antenna control circuit is shown. The antenna control circuit can specifically include: a transceiver controller 10, a first radio frequency front end module 20, a second radio frequency front end module 30, a first antenna 40 and a second antenna 50;

[0031] The first radio frequency front end module 20 is provided with a first switch piece 26 and a first adjustment assembly 22, the transceiver controller 10 is electrically connected to the first end of the first switch piece 26, the second end of the first switch piece 26 is electrically connected to the first end of the first adjustment assembly 22, and the second end of the first adjustment assembly 22 is electrically connected to the first antenna 40;

[0032] The second radio frequency front end module 30 is provided with a second switch piece 36 and a second adjustment assembly 32, the transceiver controller 10 is electrically connected to the first end of the second switch piece 36, the second end of the second switch piece 36 is electrically connected to the first end of the second adjustment assembly 32, and the second end of the second adjustment assembly 32 is electrically connected to the second antenna 50;

[0033] In a case that the gain difference between the first antenna 40 and the second antenna 50 is greater than a preset threshold, the transceiving controller 10 controls the first switch 26 to be closed, the first adjusting assembly 22 to lower the gain of the first antenna 40, or controls the second switch 36 to be closed, the second adjusting assembly 32 to lower the gain of the second antenna 50, so that the gain difference between the first antenna 40 and the second antenna 50 is less than or equal to the preset threshold.

[0034] In the embodiment of the present application, the gain difference between the second antenna 50 and the first antenna 40 can be kept within the preset threshold range, avoiding a large gain difference between the two. Thus, the technical solution which does not need to use software algorithm processing can only adjust in a range where the gain difference between the antennas is small. That is, the combination of the first switch 26 and the first adjusting assembly 22, and the combination of the second switch 36 and the second adjusting assembly 32 can form a switching channel, which can achieve better adjustment when the gain difference between the first antenna 40 and the second antenna 50 is large, avoiding the electronic device to be in SISO (Single Input Single Output) state with reduced throughput, so that the electronic device has better communication quality.

[0035] Specifically, in the embodiment of the present application, the closing or opening of the first switch 26 can control the on or off of the first adjusting assembly 22, achieving more accurate control of the first adjusting assembly 22. The closing or opening of the second switch 36 can control the on or off of the second adjusting assembly 32, achieving more accurate control of the second adjusting assembly 32. Thus, the two kinds of adjusting channels can be switched according to actual needs.

[0036] For example, in the embodiment of the present application, the transceiving controller 10 can be a Tranceiver IC (Integrated Circuit, transceiving integrated circuit), which can convert the received radio frequency signal into a baseband signal, which is beneficial to digital module processing. When transmitting, the baseband signal is modulated to a radio frequency band, which is beneficial to the antenna to radiate energy, and can realize WiFi function. Figure 1 and Figure 2As shown, the transceiver controller 10 and the first radio frequency front-end module 20 can have a first transmission path WiFi CH0TX (Wireless Fidelity Channel 0 Transmit X) and a first reception path WiFi CH0RX (Wireless Fidelity Channel 0 Receive X). The transceiver controller 10 and the second radio frequency front-end module 30 can have a second transmission path WiFi CH1TX (Wireless Fidelity Channel 1 Transmit X) and a second reception path WiFi CH1RX (Wireless Fidelity Channel 1 Receive X). Thus, the MIMO (Multiple Input Multiple Output) communication circuit technology is realized.

[0037] In the embodiment of the present application, the preset threshold is a certain threshold value at which the gain difference between the first antenna 40 and the second antenna 50 is smaller, so that the electronic device maintains a certain throughput and can be in the MIMO (Multiple Input Multiple Output) communication state, and the electronic device has better communication quality. For example, the preset threshold can be 3 dB, 4 dB, 2 dB, etc., and can be set according to actual needs. The specific value of the preset threshold in the embodiment of the present application can not be limited.

[0038] Specifically, in the embodiment of the present application, as shown in Figure 1 and Figure 2 The transceiver controller 10 and the first radio frequency front-end module 20 can also have a first feedback path WiFi RF PDET0 (Wireless Fidelity Radio Frequency Portable Data Entry Terminal 0) for detecting the power of the first feedback path, which is conducive to controlling the antenna control circuit to transmit to the first target power. The transceiver controller 10 and the second radio frequency front-end module 30 can also have a second detection path WiFi RF PDET1 (Wireless Fidelity Radio Frequency Portable Data Entry Terminal 1) for detecting the power of the second transmission path, which is conducive to controlling the antenna control circuit to transmit to the second target power.

[0039] Specifically, in the embodiment of the present application, taking a dual-input dual-output communication circuit as an example, the corresponding adjustment process of the transmission process is as shown in Figure 3As shown. First, the electronic device is powered on to initialize WiFi, open WiFi, connect to the router, complete channel setting and DPD (dead peer detection) calibration, and detect that the WiFi function is in a normal open state.

[0040] Then, the first channel CH0 of the transceiver controller 10 transmits a signal through the first antenna 40 (denoted as ANTO), and the second channel CH1 of the transceiver controller 10 detects the first signal strength P0 transmitted by the first antenna 40 through the second antenna 50 (denoted as ANTI). Similarly, the second channel CH1 of the transceiver controller 10 transmits a signal through the second antenna 50, and the first channel CH0 detects the signal strength P1 transmitted by the second antenna 50 through the first antenna 40. The signal strengths P0 and P1 can be obtained by normalizing a plurality of related parameters such as power, signal-to-noise ratio, EVM (Error Vector Magnitude), etc., or can be determined by one of the parameters. The specific processing method of the signal strength described in the embodiments of the application can not be limited.

[0041] Further, the processing system compares whether the difference between the signal strengths P0 and P1 is less than or equal to a preset transmission difference. If the difference between P0 and P1 is less than or equal to the preset transmission difference, the transmission is normally performed. If the difference between P0 and P1 is greater than the preset transmission difference, the compensation value is adjusted. Specifically, by reducing the path power corresponding to the higher one of P0 and P1, the purpose of reducing the signal-to-noise ratio and other parameters is achieved, until the difference between P0 and P1 is less than or equal to the preset transmission difference, so that the signal strengths transmitted by the first antenna 40 and the second antenna 50 are relatively close, which is beneficial to maintaining the electronic device in a MIMO communication state and has better communication quality.

[0042] Specifically, the corresponding path power can be reduced by adjusting one or more module parameters in the antenna control circuit. For example, DPC (Digital Power Controller), DAC (Digital-to-Analog Converter), LPF (Low Pass Filter), IQM (In-phase Quadrature Management), PGA (Programmable Gain Amplifier), and other modules.

[0043] Optionally, in the embodiment of the present application, the preset transmission difference value can also be obtained by querying a preset compensation value table. A commonly used scene compensation value table can also be obtained after AI (Artificial Intelligence) training for multiple times according to a user scene, a corresponding sequence is found, and a corresponding register is written. The signal strength parameters corresponding to the multiple antennas transmitted by the transceiver controller 10 are within a reasonable range. For example, the EVM and power strength indicators meet the 3GPP (3rd Generation Partnership Project) requirements. In this way, the power corresponding to one of the antennas can be reduced to meet the MIMO communication with the router in a scenario close to the router.

[0044] For example, the control circuit diagram for adjusting the compensation value during transmission is as shown in Figure 5 The adjustment can be realized by cooperating with devices such as the DSP1 Domain (Digital Signal Processing 1 Domain) module, the DSP2 Domain (Digital Signal Processing 2 Domain) module, and the first antenna 40 and the second antenna 50. The specific circuit layout and the connection relationship between the devices are prior art, and will not be described here in the embodiment of the present application.

[0045] Then, it is determined whether the adjustment of the compensation value will cause the transmission power to be lower than a threshold Pmin required for MIMO communication. If the transmission power is lower than the threshold Pmin, the step of adjusting the compensation value is returned to, and a suitable compensation value sequence is continuously searched for. If the transmission power is higher than or equal to the threshold Pmin, the step of detecting the signal strength P0 transmitted by the first antenna 40 and the signal strength P1 transmitted by the second antenna 50 is returned to, and the input dual-output channel signal quality is judged again, so as to form a cycle.

[0046] Specifically, in the embodiment of the present application, the threshold Pmin is inversely proportional to the transmission distance, and the specific parameters can be obtained by testing during the development of the electronic device. The specific value of the threshold Pmin can not be limited in the embodiment of the present application.

[0047] Correspondingly, the adjustment process of the dual-input dual-output communication circuit during reception is as shown in Figure 4 First, the electronic device is initialized after being turned on, the WiFi is opened, the channel setting and the DPD (dead peer detection) calibration are completed after connecting the router, and it is detected that the WiFi function is in a normal open state.

[0048] Then, the first channel CH0 of the transceiver controller 10 receives the receiving signal R0 of the first antenna 40, and the second channel CH1 of the transceiver controller 10 receives the receiving signal R1 of the second antenna 50. The strength of the receiving signal R0 and the strength of the receiving signal R1 can be determined by a plurality of related parameters. For example, the parameters such as RSSI (Received Signal Strength Indicator), signal-to-noise ratio, EVM, etc. are normalized to obtain, and one of them can be determined. The specific processing mode of the receiving signal strength in the above embodiment of the application can not be limited.

[0049] Further, the processing system compares whether the difference between the receiving signal strengths R0 and R1 is less than or equal to the preset threshold value. If the difference between R0 and R1 is less than or equal to the preset threshold value, the double-flow signal is normally received. If the difference between R0 and R1 is greater than the preset threshold value, an attenuation value operation is performed to reduce the signal strength of the path corresponding to the higher one of the above signal strengths, so that the signal strengths of the above two paths are closer. Thus, in the scenario close to the router, the antenna control circuit is maintained in the MIMO communication state, and has better communication quality.

[0050] Optionally, in the embodiment of the application, the difference between R0 and R1 can also be compared to establish a preset query table of the difference value and the value of the variable LNA (Low Noise Amplifier, i.e. low noise amplifier) gain or attenuation network, so as to facilitate direct calling of the program. In addition, according to the user scenario, the product development stage can be tested and converged for many times (the intelligent training of the actual environment can also be established to establish a common attenuation scheme, which is closer to the performance difference caused by the hardware difference between each electronic device).

[0051] Then, it is judged whether the attenuation value after adjustment will cause the receiving signal quality to be lower than the minimum attenuation threshold Pth. If the receiving signal quality is lower than the threshold Pth, the step of adjusting the attenuation value is returned to, and the suitable attenuation value sequence is continued to be searched. If the receiving signal quality is higher than or equal to the threshold Pth, the step of detecting the receiving signal strength R0 of the first antenna 40 and the receiving signal R1 of the second antenna 50 is returned, and the double-input double-output channel signal quality judgment is performed again, and the cycle is repeated.

[0052] Optionally, in the embodiment of the present application, the first radio frequency front end module 20 comprises a first power amplifier component 21 and a first adjusting component 22, one end of the first power amplifier component 21 is electrically connected to the transceiver controller 10, the other end of the first power amplifier component 21 is electrically connected to the first antenna 40, one end of the first adjusting component 22 is electrically connected to the transceiver controller 10, the other end of the first adjusting component 22 is electrically connected to the first antenna 40. The second radio frequency front end module 30 comprises a second power amplifier component 31 and a second adjusting component 32, one end of the second power amplifier component 31 is electrically connected to the transceiver controller 10, the other end of the second power amplifier component 31 is electrically connected to the second antenna 50, one end of the second adjusting component 32 is electrically connected to the transceiver controller 10, the other end of the second adjusting component 32 is electrically connected to the second antenna 50. In the case that the gain difference between the first antenna 40 and the second antenna 50 is greater than the preset threshold, the transceiver controller 10 controls the first adjusting component 22 to lower the gain of the first antenna 40, or controls the second adjusting component 32 to lower the gain of the second antenna 50.

[0053] In the embodiment of the present application, when the gain difference between the first antenna 40 and the second antenna 50 is greater than the preset threshold, the adjusting effect on the gain of the first antenna 40 can be realized through the first adjusting component 22 in the first radio frequency front end module 20, and meanwhile the power amplification effect of the first power amplifier component 21 on the antenna control circuit is not affected. And the adjusting effect on the gain of the second antenna 50 can be realized through the second adjusting component 32 in the second radio frequency front end module 30, and meanwhile the power amplification effect of the second power amplifier component 31 on the antenna control circuit is not affected.

[0054] Specifically, in the embodiment of the present application, the first power amplifier component 21 is used for amplifying the transmission signal of the transceiver controller 10, and is usually arranged at the transmission end, close to the first antenna 40. For example, the first power amplifier component 21 can comprise a first HPM (High Power Mode) and a first LPM (Low Power Mode), wherein the first HPM is used for high-power transmission, and the first LPM is used for low-power transmission. Similarly, the second power amplifier component 31 is also used for amplifying the transmission signal of the transceiver controller 10, and is usually arranged at the transmission end, close to the second antenna 50. For example, the second power amplifier component 31 can comprise a second HPM (High Power Mode) and a second LPM (Low Power Mode), wherein the second HPM is used for high-power transmission, and the second LPM is used for low-power transmission.

[0055] Optionally, in the embodiment of the present application, the first adjusting component 22 comprises a first low noise amplifier 23 and a first attenuator 24, one end of the first low noise amplifier 23 is electrically connected to the transceiver controller 10, the other end of the first low noise amplifier 23 is electrically connected to the antenna, and the first attenuator 24 is connected in parallel with the first low noise amplifier 23; the second adjusting component 32 comprises a second low noise amplifier 33 and a second attenuator 34, one end of the second low noise amplifier 33 is electrically connected to the transceiver controller 10, the other end of the second low noise amplifier 33 is electrically connected to the antenna, and the second attenuator 34 is connected in parallel with the second low noise amplifier 33. In the case that the gain difference between the first antenna 40 and the second antenna 50 is greater than the preset threshold value, the transceiver controller 10 controls the first attenuator 24 to lower the gain of the first antenna 40, or controls the second attenuator 34 to lower the gain of the second antenna 50.

[0056] In the embodiment of the present application, when the gain difference between the first antenna 40 and the second antenna 50 is greater than the preset threshold value, the gain of the first antenna 40 is lowered through the first attenuator 24, or the gain of the second antenna 50 is lowered through the second attenuator 34, so that the gain difference between the second antenna 50 and the first antenna 40 is always kept within the preset threshold value range. Wherein, the first low noise amplifier 23 and the second low noise amplifier 33 are low-noise amplifiers, when the gain difference between the first antenna 40 and the second antenna 50 is less than or equal to the preset threshold value, the first receiving channel of the transceiver controller 10 directly realizes the communication path through the first low noise amplifier 23, and the second receiving channel of the transceiver controller 10 directly realizes the communication path through the second low noise amplifier 33, so as to improve the sensitivity.

[0057] Specifically, in the embodiment of the present application, the first switch 26 can be connected to the first low noise amplifier 23 and the first attenuator 24 respectively, so as to control the on-off of the first low noise amplifier 23 and the first attenuator 24. Similarly, the second switch 36 can be connected to the second low noise amplifier 33 and the second attenuator 34 respectively, so as to control the on-off of the second low noise amplifier 33 and the second attenuator 34.

[0058] In some optional embodiments of the present application, the number of the first attenuators 24 comprises a plurality of, the plurality of first attenuators 24 are connected in parallel with the first low noise amplifier 23, and the attenuation values of the plurality of first attenuators 24 are different from each other. The number of the second attenuators 34 comprises a plurality of, the plurality of second attenuators 34 are connected in parallel with the two ends of the second low noise amplifier 33 respectively, and the attenuation values of the plurality of second attenuators 34 are different from each other. In this way, a plurality of attenuation schemes for the first antenna 40 can be realized through the plurality of first attenuators 24 respectively, and a plurality of attenuation schemes for the second antenna 50 can be realized through the plurality of second attenuators 34 respectively, which is convenient and efficient.

[0059] For example, as shown in Figure 1 If the number of the first attenuators 24 is set to be 3, the first switch 26 is a single-throw four-pole switch. If the number of the first attenuators 24 is set to be 1, the first switch 26 is a single-throw two-pole switch. In addition, the number of the first attenuators 24 can also be set to be 2, 4, etc., and the corresponding first switch 26 is set, and the specific number of the first attenuators 24 and the specific type of the first switch 26 are not limited in the embodiment of the present application.

[0060] Similarly, as shown in Figure 1 If the number of the second attenuators 34 is set to be 3, the second switch 36 is a single-throw four-pole switch. If the number of the second attenuators 34 is set to be 1, the second switch 36 is a single-throw two-pole switch. In addition, the number of the second attenuators 34 can also be set to be 2, 4, etc., and the corresponding second switch 36 is set, and the specific number of the second attenuators 34 and the specific type of the second switch 36 are not limited in the embodiment of the present application.

[0061] Optionally, in the embodiment of the present application, the first attenuator 24 includes at least one of a resistor, a transistor and a microstrip line, and the second attenuator 34 includes at least one of a resistor, a transistor and a microstrip line. The attenuation function of the first attenuator 24 is realized by at least one of a resistor, a transistor and a microstrip line, and when the gain difference between the first antenna 40 and the second antenna 50 is greater than a preset threshold, if the gain of the first antenna 40 is higher, the gain of the first antenna 40 is lowered. In addition, the attenuation function of the second attenuator 34 is realized by at least one of a resistor, a transistor and a microstrip line, and when the gain difference between the first antenna 40 and the second antenna 50 is greater than a preset threshold, if the gain of the second antenna 50 is higher, the gain of the second antenna 50 is lowered. The operation is simple and easy to realize.

[0062] In the embodiment of the present application, the first adjusting component 22 can optionally include a first variable low noise amplifier 25, one end of the first variable low noise amplifier 25 being electrically connected to the transceiver controller 10, and the other end of the first variable low noise amplifier 25 being electrically connected to the first antenna 40. The second adjusting component 32 includes a second variable low noise amplifier 35, one end of the second variable low noise amplifier 35 being electrically connected to the transceiver controller 10, and the other end of the second variable low noise amplifier 35 being electrically connected to the second antenna 50. In the case that the gain difference between the first antenna 40 and the second antenna 50 is greater than the preset threshold value, the transceiver controller 10 controls the first variable low noise amplifier 25 to lower the gain of the first antenna 40, or controls the second variable low noise amplifier 35 to lower the gain of the second antenna 50. In this way, the combination of the first variable low noise amplifier 25 instead of the combination of the first low noise amplifier 23 and the first attenuator 24, and the combination of the second variable low noise amplifier 35 instead of the combination of the second low noise amplifier 33 and the second attenuator 34, can simplify the structural layout of the antenna control circuit, reduce the volume of the electronic device, and be more conducive to the integration of multiple devices and the improvement of space utilization.

[0063] For example, in the embodiment of the present application, the first variable low noise amplifier 25 can be a low noise amplifier with variable gain or variable noise figure (Noise Figure), etc., and the specific type of the first variable low noise amplifier 25 can not be limited in the embodiment of the present application. Similarly, the second variable low noise amplifier 35 can be a low noise amplifier with variable gain or variable noise figure (Noise Figure), etc., and the specific type of the second variable low noise amplifier 35 can not be limited in the embodiment of the present application.

[0064] Optionally, in the embodiment of the present application, the antenna control circuit further includes a first filter 41 and a second filter 51, one end of the first filter 41 being electrically connected to the first radio frequency front-end module 20, and the other end of the first filter 41 being electrically connected to the first antenna 40, one end of the second filter 51 being electrically connected to the second radio frequency front-end module 30, and the other end of the second filter 51 being electrically connected to the second antenna 50. The first filter 41 and the second filter 51 can filter out the out-of-band interference when the transceiver signal is transmitted and received, prevent the throughput of the transceiver controller 10 from being reduced, and prevent the spurious interference of other systems when transmitting.

[0065] In the embodiment of the present application, the number of the first radio frequency front end modules 20 includes multiple, the number of the second radio frequency front end modules 30 includes multiple, the number of the first antennas 40 includes multiple, and the number of the second antennas 50 includes multiple. The first radio frequency front end modules 20 are electrically connected to the transceiver controller 10, and the first radio frequency front end modules 20 are electrically connected to one first antenna 40 correspondingly. The second radio frequency front end modules 30 are electrically connected to the transceiver controller 10, and the second radio frequency front end modules 30 are electrically connected to one second antenna 50 correspondingly. In this way, multiple MIMO communication modes can be realized, the communication efficiency is enhanced, and the application scenarios of the antenna control circuit are enriched.

[0066] For example, when the number of the first radio frequency front end modules 20 is 2, the number of the second radio frequency front end modules 30 is 2, the number of the first antennas 40 is 2, and the number of the second antennas 50 is 2, a 4*4 MIMO, that is, a four-input four-output communication mode can be realized. When the number of the first radio frequency front end modules 20 is 4, the number of the second radio frequency front end modules 30 is 4, the number of the first antennas 40 is 4, and the number of the second antennas 50 is 4, an 8*8, that is, an eight-input eight-output MIMO communication mode can be realized. The specific number of the first radio frequency front end modules 20, the second radio frequency front end modules 30, the first antennas 40, and the second antennas 50 can not be limited in the embodiment of the present application.

[0067] In summary, the antenna control circuit in the embodiment of the present application can have at least the following advantages:

[0068] In the embodiment of the present application, the antenna control circuit comprises a transceiver controller, a first radio frequency front end module, a second radio frequency front end module, a first antenna and a second antenna; the first radio frequency front end module is provided with a first switch and a first adjusting assembly, the transceiver controller is electrically connected to a first end of the first switch, a second end of the first switch is electrically connected to a first end of the first adjusting assembly, and a second end of the first adjusting assembly is electrically connected to the first antenna. The second radio frequency front end module is provided with a second switch and a second adjusting assembly, the transceiver controller is electrically connected to a first end of the second switch, a second end of the second switch is electrically connected to a first end of the second adjusting assembly, and a second end of the second adjusting assembly is electrically connected to the second antenna. In the case where the gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting assembly reduces the gain of the first antenna, or controls the second switch to be closed, and the second adjusting assembly reduces the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold. In this way, the gain difference between the second antenna and the first antenna can always be kept within the preset threshold range, avoiding a large gain difference between the two. Therefore, the technical solution that does not need to use a software algorithm can only be adjusted within a range where the gain difference between the antennas is small. That is, the combination of the first switch and the first adjusting assembly and the combination of the second switch and the second adjusting assembly can form a switching channel, which can achieve better adjustment when the gain difference between the first antenna and the second antenna is large, avoid the electronic device from being in a SISO (Single Input Single Output) state with reduced throughput, and enable the electronic device to have better communication quality.

[0069] The embodiment of the present application further provides an electronic device comprising the antenna control circuit.

[0070] For example, in the embodiment of the present application, the electronic device can include but is not limited to any one of a mobile phone, a tablet computer and a wearable device, and the specific type of the electronic device can not be limited in the embodiment of the present application.

[0071] The electronic device provided in the embodiment of the present application can at least have the following advantages:

[0072] In the embodiment of the present application, the electronic device comprises the antenna control circuit, and the antenna control circuit comprises a transceiver controller, a first radio frequency front-end module, a second radio frequency front-end module, a first antenna and a second antenna. The first radio frequency front-end module is provided with a first switch and a first adjusting assembly. The transceiver controller is electrically connected to a first end of the first switch. A second end of the first switch is electrically connected to a first end of the first adjusting assembly. A second end of the first adjusting assembly is electrically connected to the first antenna. The second radio frequency front-end module is provided with a second switch and a second adjusting assembly. The transceiver controller is electrically connected to a first end of the second switch. A second end of the second switch is electrically connected to a first end of the second adjusting assembly. A second end of the second adjusting assembly is electrically connected to the second antenna. In the case where the gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting assembly to lower the gain of the first antenna, or controls the second switch to be closed, and the second adjusting assembly to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold. In this way, the gain difference between the second antenna and the first antenna can be kept within the preset threshold range, and a large gain difference between the two can be avoided. Therefore, the technical solution which does not need to use a software algorithm can only be adjusted within a range where the gain difference between the antennas is small. That is, the combination of the first switch and the first adjusting assembly, and the combination of the second switch and the second adjusting assembly can form a switching channel, so that better adjustment can be achieved when the gain difference between the first antenna and the second antenna is large, and the electronic device can be kept in a SISO (Single Input Single Output) state, so that the electronic device has better communication quality.

[0073] The embodiment of the present application also provides an antenna control method applied to the electronic device, and the method comprises the following steps.

[0074] Step 101: acquiring the gain of the first antenna.

[0075] In the embodiment of the present application, the first radio frequency front-end module 20 is provided with the first switch 26 and the first adjusting assembly 22. The transceiver controller 10 can be electrically connected to a first end of the first switch 26. A second end of the first switch 26 is electrically connected to a first end of the first adjusting assembly 22. A second end of the first adjusting assembly 22 is electrically connected to the first antenna 40. In this way, the transceiver controller 10 can detect the gain Z0 of the first antenna 40 through the first radio frequency front-end module 20.

[0076] Step 102: acquiring the gain of the second antenna.

[0077] In the embodiment of the present application, the second radio frequency front end module 30 is provided with the second switch 36 and the second adjusting assembly 32, the transceiver controller can be electrically connected to the first end of the second switch 36, the second end of the second switch 36 is electrically connected to the first end of the second adjusting assembly 32, and the second end of the second adjusting assembly 32 is electrically connected to the second antenna 50. In this way, the transceiver controller 10 can detect the gain Z1 of the second antenna 50 through the feedback of the second radio frequency front end module 30.

[0078] Step 103: In the case that the gain difference between the first antenna and the second antenna is greater than the preset threshold, the first switch is closed by the transceiver controller, the gain of the first antenna is lowered by the first adjusting assembly, or the second switch is closed by the transceiver controller, the gain of the second antenna is lowered by the second adjusting assembly, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold.

[0079] In the embodiment of the present application, based on the gain Z0 of the first antenna 40 and the gain Z1 of the second antenna 50 obtained in the above steps, the gain difference Z3 between the gain Z0 of the first antenna 40 and the gain Z1 of the second antenna 50 is obtained, and it is determined whether the gain difference Z3 is greater than the preset threshold. If the gain difference Z3 is greater than the preset threshold, it is determined that the gain Z0 of the first antenna 40 is greater than the gain Z1 of the second antenna 50, or the gain Z0 of the first antenna 40 is less than the gain Z1 of the second antenna 50. If the gain Z0 of the first antenna 40 is greater than the gain Z1 of the second antenna 50, the first switch 26 is closed by the transceiver controller 10, and then the gain of the first antenna 40 is lowered by the first adjusting assembly 22 until the gain difference between the first antenna 40 and the second antenna 50 is less than or equal to the preset threshold. If the gain Z0 of the first antenna 40 is less than the gain Z1 of the second antenna 50, the second switch 36 is closed by the transceiver controller 10, and then the gain of the second antenna 50 is lowered by the second adjusting assembly 32 until the gain difference between the first antenna 40 and the second antenna 50 is less than or equal to the preset threshold.

[0080] In this way, the gain difference between the second antenna 50 and the first antenna 40 can always be kept within the preset threshold range, avoiding a large gain difference between the two. Therefore, the technical solution that does not need to use software algorithm processing only adjusts within a small range of gain difference between antennas. That is, through the combination of the first switch 26 and the first adjusting assembly 22, and the combination of the second switch 36 and the second adjusting assembly 32, a switching channel is formed, which can achieve better adjustment when the gain difference between the first antenna 40 and the second antenna 50 is large, avoiding the electronic device from being in the SISO state, i.e., the single-input single-output state, so that the electronic device has better communication quality.

[0081] The antenna control method has at least the following advantages.

[0082] In the embodiment of the present application, the antenna control method comprises: obtaining the gain of the first antenna; obtaining the gain of the second antenna; in the case that the gain difference between the first antenna and the second antenna is greater than a preset threshold, controlling the first switch to be closed by a transceiver controller, controlling the first adjusting assembly to lower the gain of the first antenna, or controlling the second switch to be closed, and controlling the second adjusting assembly to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold. In this way, the gain difference between the second antenna and the first antenna can be kept within the preset threshold range, and a large gain difference between the two can be avoided. Therefore, the technical solution that does not need to use a software algorithm can only be adjusted within a range in which the gain difference between the antennas is small. That is, the combination of the first switch and the first adjusting assembly, and the combination of the second switch and the second adjusting assembly can form a switching channel, and a better adjustment can be achieved when the gain difference between the first antenna and the second antenna is large, so that the electronic device can be kept in the SISO state, that is, the single-input single-output state, and the electronic device has a better communication quality.

[0083] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An antenna control circuit, characterized by, The antenna control circuit comprises a transceiver controller, a first radio frequency front end module, a second radio frequency front end module, a first antenna and a second antenna; The first radio frequency front end module is provided with a first switch and a first adjusting assembly, the transceiver controller is electrically connected to a first end of the first switch, a second end of the first switch is electrically connected to a first end of the first adjusting assembly, and a second end of the first adjusting assembly is electrically connected to the first antenna; The second radio frequency front end module is provided with a second switch and a second adjusting assembly, the transceiver controller is electrically connected to a first end of the second switch, a second end of the second switch is electrically connected to a first end of the second adjusting assembly, and a second end of the second adjusting assembly is electrically connected to the second antenna; In the case that the gain difference between the first antenna and the second antenna is greater than a preset threshold, the transceiver controller controls the first switch to be closed, the first adjusting assembly to lower the gain of the first antenna, or controls the second switch to be closed, and the second adjusting assembly to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold.

2. The antenna control circuit of claim 1, wherein, The first radio frequency front end module comprises a first power amplifier assembly and the first adjusting assembly, one end of the first power amplifier assembly is electrically connected to the transceiver controller, the other end of the first power amplifier assembly is electrically connected to the first antenna, one end of the first adjusting assembly is electrically connected to the transceiver controller, and the other end of the first adjusting assembly is electrically connected to the first antenna; The second radio frequency front end module comprises a second power amplifier assembly and the second adjusting assembly, one end of the second power amplifier assembly is electrically connected to the transceiver controller, the other end of the second power amplifier assembly is electrically connected to the second antenna, one end of the second adjusting assembly is electrically connected to the transceiver controller, and the other end of the second adjusting assembly is electrically connected to the second antenna.

3. The antenna control circuit of claim 2, wherein, The first adjusting assembly comprises a first low noise amplifier and a first attenuator, one end of the first low noise amplifier is electrically connected to the transceiver controller, the other end of the first low noise amplifier is electrically connected to the first antenna, and the first attenuator is connected in parallel with the first low noise amplifier; The second adjusting assembly comprises a second low noise amplifier and a second attenuator, one end of the second low noise amplifier is electrically connected to the transceiver controller, the other end of the second low noise amplifier is electrically connected to the second antenna, and the second attenuator is connected in parallel with the second low noise amplifier; In the case that the gain difference between the first antenna and the second antenna is greater than the preset threshold, the transceiver controller controls the first attenuator to lower the gain of the first antenna, or controls the second attenuator to lower the gain of the second antenna.

4. The antenna control circuit of claim 3, wherein, The number of the first attenuators comprises a plurality of, the plurality of first attenuators are connected in parallel with the first low noise amplifier, and the attenuation values of the plurality of first attenuators are different from each other; The second attenuator includes at least one of a resistor, a transistor, and a microstrip line.

5. The antenna control circuit of claim 3, wherein, The first attenuator includes at least one of a resistor, a transistor, and a microstrip line. The second attenuator includes at least one of a resistor, a transistor, and a microstrip line.

6. The antenna control circuit of claim 2, wherein, The first adjusting assembly includes a first variable low noise amplifier, one end of the first variable low noise amplifier being electrically connected to the transceiving controller, and the other end of the first variable low noise amplifier being electrically connected to the first antenna. The second adjusting assembly includes a second variable low noise amplifier, one end of the second variable low noise amplifier being electrically connected to the transceiving controller, and the other end of the second variable low noise amplifier being electrically connected to the second antenna. In a case where the gain difference between the first antenna and the second antenna is greater than the preset threshold value, the transceiving controller controls the first variable low noise amplifier to lower the gain of the first antenna or controls the second variable low noise amplifier to lower the gain of the second antenna.

7. The antenna control circuit of claim 1, wherein, The antenna control circuit further includes a first filter and a second filter. One end of the first filter is electrically connected to the first radio frequency front-end module, and the other end of the first filter is electrically connected to the first antenna.

8. The antenna control circuit of claim 1, wherein, The number of the first radio frequency front-end modules includes a plurality, the number of the second radio frequency front-end modules includes a plurality, the number of the first antennas includes a plurality, and the number of the second antennas includes a plurality. The first radio frequency front-end module is electrically connected to the transceiving controller, and the first radio frequency front-end module is correspondingly electrically connected to one of the first antennas. The second radio frequency front-end module is electrically connected to the transceiving controller, and the second radio frequency front-end module is correspondingly electrically connected to one of the second antennas.

9. An electronic device, comprising: The electronic device includes the antenna control circuit according to any one of claims 1 to 8.

10. An antenna control method characterized by, The method is applied to the electronic device according to claim 9, and the method includes: obtaining the gain of the first antenna; obtaining the gain of the second antenna; in a case where the gain difference between the first antenna and the second antenna is greater than the preset threshold value, controlling, by the transceiving controller, the first switch to be closed, the first adjusting assembly to lower the gain of the first antenna, or controlling the second switch to be closed, the second adjusting assembly to lower the gain of the second antenna, so that the gain difference between the first antenna and the second antenna is less than or equal to the preset threshold value.

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