Antenna selection circuit, method, electronic device, and readable storage medium

Abstract

The application discloses an antenna selection circuit, method, electronic equipment and readable storage medium, and belongs to the technical field of communication. The antenna selection circuit comprises an antenna assembly comprising a first antenna, a second antenna and a third antenna, a radio frequency chip connected with each antenna in the antenna assembly, a detection assembly arranged in the radio frequency chip, and a signal processing assembly connected with the third antenna and the detection assembly. The signal processing assembly is used for obtaining a signal of a target frequency band from a full-band signal received by the third antenna under the condition that a preset condition is reached, and turning on the connection between the third antenna and the detection assembly to transmit the signal of the target frequency band to the detection assembly. The detection assembly is used for detecting a signal quality parameter of the signal of the target frequency band to obtain a reference quality parameter. The radio frequency chip is used for selecting a currently used antenna from the antenna assembly according to the reference quality parameter.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to an antenna selection circuit, method, electronic device, and readable storage medium. Background Technology

[0002] The antenna performance of a mobile phone is easily affected by different applications such as making calls and in-car navigation, as well as by different ways the user holds the phone. For frequency bands that support Multiple Input Multiple Output (MIMO) antennas, antenna switching can be determined based on the received signal strength of each of the three antennas, ensuring that the phone maintains a clear antenna signal in different application scenarios.

[0003] In the prior art, when the first antenna and the second antenna are used for signal transmission and reception in the LTE band, and the third antenna is used for signal transmission and reception in the NR band, the transceiver chips connected to each antenna can detect the received signal strength of the LTE band on the first antenna and the second antenna, as well as the received signal strength of the NR band on the third antenna.

[0004] However, since the third antenna is not used for the LTE band, the transceiver chip cannot detect the signal strength of the LTE band on the third antenna. This results in poor signal strength on both the first and second antennas. Therefore, when switching the LTE band to the third antenna is necessary, the third antenna must be selected directly. Consequently, there is a risk that the signal quality of the LTE band will not improve after switching to the third antenna, leading to signal delays or stuttering. Summary of the Invention

[0005] The purpose of this application is to provide an antenna selection circuit, method, electronic device, and readable storage medium that can solve the problem that the signal quality of the LTE band is still not improved after directly switching to the third antenna, resulting in signal delay or stuttering.

[0006] In a first aspect, embodiments of this application provide an antenna selection circuit, the circuit comprising: an antenna assembly including a first antenna, a second antenna and a third antenna, a radio frequency chip respectively connected to each antenna in the antenna assembly, a detection component disposed in the radio frequency chip, and a signal processing component respectively connected to the third antenna and the detection component;

[0007] The signal processing component is used to obtain the target frequency band signal from the full-band signal received by the third antenna when a preset condition is met, and to connect the third antenna to the detection component so as to transmit the target frequency band signal to the detection component.

[0008] The detection component is used to detect the signal quality parameters of the signal in the target frequency band and obtain reference quality parameters;

[0009] The radio frequency chip is used to select the currently used antenna from the antenna assembly based on the reference quality parameters.

[0010] Optionally, the signal processing component includes a first conducting component, a filter, and a second conducting component; the first conducting component is connected to the third antenna and the filter, respectively, and the second conducting component is connected to the filter and the detection component, respectively.

[0011] The first conducting component is used to conduct the connection between the third antenna and the filter when the preset condition is met, so as to transmit the full-band signal received by the third antenna to the filter;

[0012] The filter is used to filter the full-band signal to obtain the signal of the target frequency band;

[0013] The second conducting component is used to conduct the connection between the filter and the detection component when the preset condition is met, so as to transmit the signal of the target frequency band to the detection component.

[0014] Optionally, the first conducting component is a bidirectional coupler, and the bidirectional coupler is also connected to a signal generating component; the signal generating component is used to generate a signal in a preset frequency band.

[0015] The bidirectional coupler is used to connect the third antenna and the filter when the preset condition is met.

[0016] The bidirectional coupler is also used to connect the signal generation component to the third antenna when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generation component to the third antenna through the bidirectional coupler, and to send the signal of the preset frequency band through the third antenna.

[0017] Optionally, the second conducting component is also connected to the bidirectional coupler;

[0018] The second conducting component is also used to conduct the connection between the bidirectional coupler and the detection component when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component.

[0019] Optionally, the first conducting component is a single-pole double-throw switch, which is also connected to a directional coupler. The directional coupler is connected to a signal generating component, which is used to generate a signal in a preset frequency band.

[0020] The single-pole double-throw switch is used to connect the third antenna and the filter when the preset condition is met.

[0021] The single-pole double-throw switch is also used to connect the directional coupler to the third antenna when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generation component to the third antenna through the directional coupler, and to send the signal of the preset frequency band through the third antenna.

[0022] Optionally, the second conducting component is also connected to the directional coupler;

[0023] The second conducting component is also used to conduct the connection between the directional coupler and the detection component when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component.

[0024] Optionally, the currently used antenna includes the currently used transceiver antenna and the currently used receiving antenna on the target frequency band; the radio frequency chip is specifically used to select the third antenna as the currently used transceiver antenna on the target frequency band when the reference quality parameter is not less than a preset parameter threshold, and to select the receiving antenna of the target frequency band from the first antenna and the second antenna;

[0025] The radio frequency chip is further configured to select the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna when the reference quality parameter is less than a preset parameter threshold.

[0026] Optionally, the preset conditions include the fact that the received signal strengths of the first antenna and the second antenna do not meet the preset strength requirements at the same time, and the third antenna is not used for signal transmission and reception in the preset frequency band.

[0027] Secondly, embodiments of this application provide an antenna selection method applied to the antenna selection circuit described in the first aspect. The circuit includes: an antenna assembly comprising a first antenna, a second antenna, and a third antenna; a radio frequency chip connected to each antenna in the antenna assembly; a detection component disposed in the radio frequency chip; and a signal processing component connected to the third antenna and the detection component respectively. The method includes:

[0028] The signal processing component obtains the target frequency band signal from the full-band signal received by the third antenna under preset conditions, and connects the third antenna to the detection component to transmit the target frequency band signal to the detection component.

[0029] The detection component detects the signal quality parameters of the signal in the target frequency band to obtain reference quality parameters.

[0030] The radio frequency chip selects the currently used antenna from the antenna assembly based on the reference quality parameters.

[0031] Optionally, the currently used antenna includes the currently used transceiver antenna and the currently used receiving antenna on the target frequency band; the step of selecting the currently used antenna from the antenna assembly by the radio frequency chip according to the reference quality parameters includes:

[0032] The radio frequency chip selects the third antenna as the currently used transceiver antenna when the reference quality parameter is not less than a preset parameter threshold, and selects the currently used receiving antenna from the first antenna and the second antenna.

[0033] When the reference quality parameter is less than a preset parameter threshold, the radio frequency chip selects the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna.

[0034] Optionally, the preset conditions include the fact that the received signal strengths of the first antenna and the second antenna do not meet the preset strength requirements at the same time, and the third antenna is not used for signal transmission and reception in the preset frequency band.

[0035] Thirdly, embodiments of this application provide an electronic device including the antenna selection circuit described in the first aspect.

[0036] Fourthly, embodiments of this application provide a readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the antenna selection method as described in the second aspect.

[0037] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the antenna selection method as described in the second aspect.

[0038] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the antenna selection method as described in the second aspect.

[0039] The antenna selection circuit of this embodiment can, under preset conditions, connect the third antenna and the detection component through a signal processing component. This allows for convenient transmission of the target frequency band signal obtained from the full-band signal received from the third antenna to the detection component. The detection component then detects the signal quality parameters of the target frequency band signal, thereby easily obtaining reference quality parameters. In this way, given the known signal quality parameters of the target frequency band on the third antenna, the RF chip can select the currently used antenna from the antenna components based on the reference quality parameters. This makes the antenna selection operation more rational, improves the signal quality of the target frequency band antenna, and avoids signal delays or stuttering issues that occur even after directly switching to the third antenna without signal quality improvement. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of an antenna selection circuit provided in an embodiment of this application;

[0041] Figure 2 This is a circuit diagram of a three-antenna switching circuit in the prior art;

[0042] Figure 3 This is a schematic diagram of another antenna selection circuit provided in an embodiment of this application;

[0043] Figure 4 This is a schematic diagram of another antenna selection circuit provided in the embodiments of this application;

[0044] Figure 5 This is a flowchart illustrating an antenna selection method provided in an embodiment of this application;

[0045] Figure 6 This is a flowchart illustrating another antenna selection method provided in an embodiment of this application;

[0046] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the structure of another electronic device provided in an embodiment of this application;

[0048] Figure 9 This is a schematic diagram of the structure of another electronic device provided in the embodiments of this application. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0050] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or at least two. 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.

[0051] The antenna selection circuit provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0052] Figure 1 This is a schematic diagram of an antenna selection circuit provided in an embodiment of this application, as shown below. Figure 1 As shown, the antenna selection circuit 10 includes: an antenna assembly 101 comprising a first antenna 1011, a second antenna 1012 and a third antenna 1013; a radio frequency chip 102 connected to each antenna in the antenna assembly; a detection component 1021 disposed in the radio frequency chip 102; and a signal processing component 103 connected to the third antenna 1013 and the detection component 1021 respectively.

[0053] The signal processing component 103 is used to obtain the target frequency band signal from the full-band signal received by the third antenna 1013 when a preset condition is met, and to connect the third antenna 1013 and the detection component 1021 to transmit the target frequency band signal to the detection component 1021.

[0054] The detection component 1021 is used to detect the signal quality parameters of the signal in the target frequency band and obtain reference quality parameters;

[0055] The radio frequency chip 102 is used to select the currently used antenna from the antenna assembly according to the reference quality parameters.

[0056] In this embodiment, the antenna assembly may include a first antenna 1011, a second antenna 1012, a third antenna 1013, and an antenna switch. The first antenna 1011, second antenna 1012, and third antenna 1013 are each connected to the antenna switch. The antenna switch is used to switch the antenna's operating state. The antenna switch can be connected to the RF chip 102, and the antenna switching is performed under the control of the RF chip 102. It is understood that the antenna switch switches the frequency band and the signal reception and transmission states. The antenna switch can be an antenna main diversity path switching (ASDiv) switch, which allows the mobile phone to use better signal reception and transmission strength to answer calls based on the field-measured signal strength. For example, the antenna switch can be a three-pole three-throw (3P3T) switch, used to connect the first antenna 1011, the second antenna 1012, the third antenna 1013, and the front-end RF processing module.

[0057] The antenna in this application embodiment can be a mobile phone antenna, which is a device on a mobile phone used to receive signals. Older mobile phones have protruding antennas, while most new mobile phones have them hidden inside the body. The first antenna 1011 can be a Long Term Evolution (LTE) band transceiver antenna LTE TRX (Transimite & Receive Crossing, TRX), the second antenna 1012 can be an LTE band auxiliary path receive antenna LTE DRX (Diversity Receive Crossing, DRX), and the third antenna 1013 can be a New Radio (NR) band transceiver antenna NR TRX.

[0058] It's important to note that LTE frequency bands can support Multiple-Input Multiple-Output (MIMO) antennas, but they only have two receive paths, such as the primary receive crossing (PRX) and secondary receive crossing (DRX) in a TRX. The TRX includes the transport crossing (TX) and the primary receive crossing (PRX), belonging to the 2RX band.

[0059] The target frequency band in this embodiment can be the corresponding operating frequency band on the first antenna 1011 and the second antenna 1012, such as the LTE band. The preset condition can be that the received signal strength of the target frequency band on the third antenna 1013 needs to be detected, so that the RF chip 102 can determine whether to switch the LTE TRX on the first antenna 1011 to the third antenna 1013 based on the received signal strength of the target frequency band on the third antenna 1013, thereby improving the signal quality of the LTE band.

[0060] In this embodiment, the signal processing component 103 can acquire the full-band signal received by the third antenna 1013 under preset conditions, and obtain the target frequency band signal from the full-band signal. It is understood that the first antenna 1011, the second antenna 1012, and the third antenna 1013 can all receive full-band signals. The signal processing component 103, connected to the third antenna 1013, can acquire the full-band signal received by the third antenna 1013. The signal processing component 103 is connected to both the third antenna 1013 and the detection component 1021. The signal processing component 103 may include a switch for connecting the third antenna 1013 to the detection component 1021 and transmitting the acquired target frequency band signal to the detection component 1021.

[0061] In this embodiment, the signal quality parameter can be the received signal strength of the signal in the target frequency band, used to characterize the signal quality of the signal in the target frequency band on the third antenna 1013. For example, the signal quality parameter can be the Reference Signal Receiving Power (RSRP), which is a key parameter in LTE networks that can represent the strength of wireless signals and is one of the physical layer measurement requirements. It is the average signal power received on all resource particles carrying the reference signal within a certain symbol.

[0062] In this embodiment, the detection component 1021 can be a signal power detection component 1021, used to detect the reference signal received power of the signal in the target frequency band, and use the reference signal received power as a reference quality parameter of the signal in the target frequency band. It should be noted that the signal quality of the signal in the target frequency band on the first antenna 1011 and the second antenna 1012 can be measured by the received signal strength detected by the RF chip 102 connected to the first antenna 1011 and the second antenna 1012 using signal modulation. Since the third antenna 1013 is not used for transmitting or receiving signals in the target frequency band, the received signal strength cannot be directly detected by the RF chip 102. Instead, the detection component 1021 provided in this embodiment specifically detects the received signal strength of the signal in the target frequency band on the third antenna 1013.

[0063] In this embodiment, when the RF chip 102 receives the reference quality parameters sent by the detection component 1021, it can compare the reference quality parameters with a threshold pre-stored in the RF chip 102. Based on the comparison result, it determines which of the first antenna 1011, the second antenna 1012, and the third antenna 1013 will be used for signal transmission and reception in the target frequency band. Specifically, when the RF chip 102 determines that the received signal strength of the target frequency band on the third antenna 1013 is higher than a preset threshold, it can send a control command to the antenna assembly 101 to control the antenna switch in the antenna assembly 101 to switch the antenna used for TRX from the first antenna 1011 to the third antenna 1013, thereby improving the signal quality of the transceiver antenna in the target frequency band, such as LTE TRX.

[0064] The antenna selection circuit 10 of this embodiment can, under preset conditions, connect the third antenna 1013 and the detection component 1021 via the signal processing component 103. This allows for convenient transmission of the target frequency band signal obtained from the full-band signal received from the third antenna 1013 to the detection component 1021. The detection component 1021 then detects the signal quality parameters of the target frequency band signal, thereby easily obtaining reference quality parameters. In this way, given the known signal quality parameters of the target frequency band on the third antenna 1013, the RF chip 102 can select the currently used antenna from the antenna components based on the reference quality parameters. This makes the antenna selection operation more reasonable, improves the signal quality of the target frequency band antenna, and avoids signal delays or stuttering problems that occur even after directly switching to the third antenna 1013 without signal quality improvement.

[0065] Optionally, the signal processing component 103 includes a first conducting component, a filter, and a second conducting component; the first conducting component is connected to the third antenna 1013 and the filter, respectively, and the second conducting component is connected to the filter and the detection component 1021, respectively.

[0066] The first conducting component is used to conduct the connection between the third antenna 1013 and the filter when the preset condition is met, so as to transmit the full-band signal received by the third antenna 1013 to the filter;

[0067] The filter is used to filter the full-band signal to obtain the signal of the target frequency band;

[0068] The second conducting component is used to conduct the connection between the filter and the detection component 1021 when the preset condition is met, so as to transmit the signal of the target frequency band to the detection component 1021.

[0069] In this embodiment, the first and second conducting components can be connected to the radio frequency chip 102. Under the preset conditions, the radio frequency chip 102 can send control commands to the first and second conducting components to control the first conducting component to conduct the connection between the third antenna 1013 and the filter, and to control the second conducting component to conduct the connection between the filter and the detection component 1021. This allows the full-band signal received by the third antenna 1013 to be transmitted to the filter through the first conducting component. The filter performs filtering on the full-band signal to obtain the target frequency band signal, which is then transmitted to the detection component 1021 through the second conducting component.

[0070] In this embodiment, the filter can be a band-pass filter (BPF) used to allow desired frequency components to pass through and remove unwanted frequency components. The passband range of the BPF can be determined according to the target frequency band. For example, if the LTE frequency band supports a frequency band from 1.4MHz to 20MHz, then the passband range of the BPF is 1.4MHz to 20MHz. This is merely an example, and this embodiment does not impose any limitations on it.

[0071] In this embodiment, the first and second conducting components can conveniently connect the third antenna 1013 to the filter and the filter to the detection component 1021 under preset conditions. This allows the full-band signal received by the third antenna 1013 to be transmitted to the filter via the first conducting component. The filter then filters the full-band signal to obtain the target frequency band signal, which is then transmitted to the detection component 1021 via the second conducting component. Thus, under preset conditions, the detection component 1021 can conveniently obtain the target frequency band signal from the full-band signal received by the third antenna 1013 via the filter.

[0072] Optionally, the first conducting component is a bidirectional coupler, and the bidirectional coupler is also connected to a signal generating component; the signal generating component is used to generate a signal in a preset frequency band.

[0073] The bidirectional coupler is used to connect the third antenna 1013 to the filter when the preset condition is met.

[0074] The bidirectional coupler is also used to connect the signal generating component to the third antenna 1013 when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generating component to the third antenna 1013 through the bidirectional coupler, and to send the signal of the preset frequency band through the third antenna 1013.

[0075] In this embodiment, the bidirectional coupler is a radio frequency four-port device used to monitor the transmitter's output power and output spectrum, test the reflected power from the transmitter to the antenna, and monitor the matching status of the antenna feed system. The antenna feed system refers to the system in which the antenna radiates electromagnetic waves into the surrounding space. The bidirectional coupler is connected to the third antenna 1013, the filter, and the signal generation component. The bidirectional coupler can also be connected to the radio frequency chip 102. Under preset conditions, the radio frequency chip 102 can send a first control command to the bidirectional coupler to control the bidirectional coupler to connect the third antenna 1013 to the filter, so that the full-band signal received by the third antenna 1013 is transmitted to the filter through the bidirectional coupler.

[0076] In this embodiment, the signal generation component can be a radio frequency (RF) transmitting module used to generate a signal in a preset frequency band and transmit the generated preset frequency band signal to a bidirectional coupler. The preset frequency band can be the NR band. If the preset conditions are not met, the RF chip 102 can send a second control command to the bidirectional coupler to control the bidirectional coupler to connect the third antenna 1013 to the signal generation component, so that the preset frequency band signal generated by the signal generation component is transmitted to the third antenna 1013 through the bidirectional coupler, and then transmitted through the third antenna 1013.

[0077] In this embodiment, the bidirectional coupler can connect the third antenna 1013 to the filter or connect the signal generation component to the third antenna 1013, depending on whether the preset conditions are met. This allows for convenient control of the antenna selection circuit 10 to transmit signals in a preset frequency band or enables the detection component 1021 to obtain signals in the target frequency band on the third antenna 1013.

[0078] Optionally, the second conducting component is also connected to the bidirectional coupler;

[0079] The second conducting component is also used to conduct the connection between the bidirectional coupler and the detection component 1021 when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component 1021.

[0080] In this embodiment, the second conducting component can be a single-pole double-throw (SPDT) switch, and is connected to the bidirectional coupler, filter, and detection component 1021 respectively. The second conducting component can also be connected to the radio frequency chip 102. If a preset condition is not met, the radio frequency chip 102 can send a control command to the second conducting component to control the second conducting component to conduct the connection between the bidirectional coupler and the detection component 1021.

[0081] In this embodiment, the bidirectional coupler can allocate the signal of the preset frequency band generated by the signal generation component according to a preset allocation ratio to obtain a sub-preset frequency band signal. This sub-preset frequency band signal is then transmitted to the detection component 1021 through the second conduction component, allowing the detection component 1021 to receive the sub-preset frequency band signal and detect the signal quality parameters of the preset frequency band signal. The signal quality parameters of the preset frequency band signal can be the transmission power of the preset frequency band signal.

[0082] In this embodiment, the second conducting component can conveniently conduct the connection between the bidirectional coupler and the detection component 1021 without meeting the preset conditions, so that the detection component 1021 can receive the signal of the preset frequency band generated by the signal generating component, thereby the detection component 1021 can conveniently detect the signal quality parameters of the signal of the preset frequency band.

[0083] Optionally, the first conducting component is a single-pole double-throw switch, which is also connected to a directional coupler. The directional coupler is connected to a signal generating component, which is used to generate a signal in a preset frequency band.

[0084] The single-pole double-throw switch is used to connect the third antenna 1013 to the filter when the preset condition is met.

[0085] The single-pole double-throw switch is also used to connect the directional coupler to the third antenna 1013 when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generation component to the third antenna 1013 through the directional coupler, and to send the signal of the preset frequency band through the third antenna 1013.

[0086] In this embodiment, the directional coupler is used for signal isolation, separation, and mixing, such as power monitoring, source output power stabilization, signal source isolation, and frequency sweep testing of transmission and reflection. The directional coupler can be connected to a single-pole double-throw switch and a signal generation component, and perform RF front-end processing on the preset frequency band signal generated by the signal generation component, such as source output power stabilization and frequency sweep testing of transmission and reflection. This is merely an example, and the embodiments of this application do not impose limitations.

[0087] In this embodiment, the single-pole double-throw switch can also be connected to the radio frequency chip 102. Under preset conditions, the radio frequency chip 102 can send a first control command to the single-pole double-throw switch to control the single-pole double-throw switch to connect the third antenna 1013 to the filter, so that the full-band signal received by the third antenna 1013 is transmitted to the filter through the single-pole double-throw switch. If the preset conditions are not met, the radio frequency chip 102 can send a second control command to the single-pole double-throw switch to control the single-pole double-throw switch to connect the third antenna 1013 to the directional coupler, so that the preset frequency band signal generated by the signal generation component can be transmitted to the third antenna 1013 through the directional coupler and the single-pole double-throw switch, and the preset frequency band signal is transmitted through the third antenna 1013.

[0088] In this embodiment, a single-pole double-throw switch can connect the third antenna 1013 to the filter or connect the directional coupler to the third antenna 1013, depending on whether the preset conditions are met. This allows the antenna selection circuit 10 to transmit signals in a preset frequency band or enables the detection component 1021 to obtain signals in the target frequency band on the third antenna 1013.

[0089] Optionally, the second conducting component is also connected to the directional coupler;

[0090] The second conducting component is also used to conduct the connection between the directional coupler and the detection component 1021 when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component 1021.

[0091] In this embodiment, the second conducting component can be an SPDT switch, and is connected to the directional coupler, filter, and detection component 1021 respectively. The second conducting component can also be connected to the radio frequency chip 102. If a preset condition is not met, the radio frequency chip 102 can send a control command to the second conducting component to control the second conducting component to conduct the connection between the directional coupler and the detection component 1021.

[0092] In this embodiment, the directional coupler can allocate the signal of the preset frequency band generated by the signal generation component according to the preset allocation ratio to obtain the sub-preset frequency band signal, and transmit the sub-preset frequency band signal to the detection component 1021 through the second conduction component, so that the detection component 1021 can receive the sub-preset frequency band signal, thereby detecting the signal quality parameters of the preset frequency band signal through the detection component 1021.

[0093] In this embodiment, the second conducting component can conveniently conduct the connection between the directional coupler and the detection component 1021 without meeting the preset conditions, so that the detection component 1021 can receive the signal of the preset frequency band generated by the signal generating component, thereby the detection component 1021 can conveniently detect the signal quality parameters of the signal of the preset frequency band.

[0094] Optionally, the currently used antenna includes the currently used transceiver antenna and the currently used receiving antenna on the target frequency band; the radio frequency chip 102 is specifically used to select the third antenna 1013 as the currently used transceiver antenna on the target frequency band when the reference quality parameter is not less than a preset parameter threshold, and to select the receiving antenna of the target frequency band from the first antenna 1011 and the second antenna 1012.

[0095] The radio frequency chip 102 is further configured to select the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna when the reference quality parameter is less than a preset parameter threshold.

[0096] In this embodiment, the target frequency band can be a frequency band with only two receiving paths. The antennas used on this frequency band can include one transceiver antenna and one receiving antenna. Both antennas can be used for signal reception, and the transceiver antenna can also be used for signal transmission. When the RF chip 102 receives the reference quality parameters sent by the detection component 1021, it can compare the reference quality parameters with a preset parameter threshold stored in the RF chip 102. Based on the comparison result, it determines which of the first antenna 1011, the second antenna 1012, and the third antenna 1013 will be used for signal transmission and reception in the target frequency band. The preset parameter threshold can be a preset value, or it can be determined based on the actual value of the received signal strength of the target frequency band on the first antenna 1011 and the second antenna 1012. This is only an example, and this embodiment does not limit the scope of the application.

[0097] In this embodiment, when the reference quality parameter is not less than a preset parameter threshold, the RF chip 102 can select the third antenna 1013 as the transceiver antenna currently used in the target frequency band, and select the receiving antenna of the target frequency band from the first antenna 1011 and the second antenna 1012. For example, the first antenna 1011 is the LTE TRX transceiver antenna of the LTE frequency band, the second antenna 1012 is the LTE DRX secondary receiving antenna of the LTE frequency band, and the third antenna 1013 is the NR TRX transceiver antenna of the NR frequency band. When the reference quality parameter is not less than the preset parameter threshold, the RF chip 102 can control the antenna assembly to switch the LTE TRX transceiver antenna of the target frequency band to the third antenna 1013, while the second antenna 1012 remains as the LTE DRX secondary receiving antenna of the LTE frequency band, and the first antenna 1011 is switched to the NR TRX transceiver antenna of the NR frequency band.

[0098] In this embodiment, when the reference quality parameter is less than a preset parameter threshold, the RF chip 102 can select the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna. Specifically, the RF chip 102 can detect the received signal strength of the target frequency band on the first antenna 1011 and the second antenna 1012, and select the antenna with the stronger received signal strength in the target frequency band as the transceiver antenna for that band, and the other as the receiving antenna.

[0099] Optionally, during signal transmission and reception in the target frequency band, if the received signal strength of the transceiver antenna in the target frequency band is less than a preset signal strength threshold, but the received signal strength of the receiving antenna is not less than the preset signal strength threshold (i.e., only one antenna is blocked, resulting in poor signal quality for that antenna), switching can be performed between the transceiver antenna and the receiving antenna in the target frequency band to improve the signal quality of the transceiver antenna in the target frequency band. For example, if the first antenna 1011 is the LTE TRX transceiver antenna in the LTE frequency band, and the second antenna 1012 is the LTE DRX auxiliary receiving antenna in the LTE frequency band, if the received signal strength on the first antenna 1011 is less than the preset signal strength threshold, but the received signal strength on the second antenna 1012 is not less than the preset signal strength threshold, switching can be performed between the first antenna 1011 and the second antenna 1012. That is, the second antenna 1012 can be used for LTE TRX, and the first antenna 1011 can be used for LTE DRX to improve the signal quality of the transceiver antenna in the LTE frequency band.

[0100] In this embodiment, the radio frequency chip 102 can select a suitable antenna from the first antenna 1011, the second antenna 1012 and the third antenna 1013 as the transmit and receive antenna currently used in the target frequency band based on the reference quality parameters and preset parameter thresholds. This makes the antenna selection operation more reasonable, improves the signal quality of the antenna in the target frequency band, and avoids the problem of signal delay or stuttering that still does not improve the signal quality after directly switching to the third antenna 1013.

[0101] Optionally, the preset conditions include the fact that the received signal strength of the first antenna 1011 and the second antenna 1012 does not meet the preset strength requirements at the same time, and the third antenna 1013 is not used for signal transmission and reception in the preset frequency band.

[0102] In this embodiment, when the third antenna 1013 is not used for signal transmission and reception in a preset frequency band, for example, when the LTE bands on the first antenna 1011 and the second antenna 1012 are working, but the NR band on the third antenna 1013 is not working, i.e., when the third antenna 1013 is not used for signal transmission and reception in the preset frequency band, the RF chip 102 can detect the received signal strength of the first antenna 1011 and the second antenna 1012 by signal modulation, and compare them with the preset strength requirements respectively to determine whether the received signal strength of the first antenna 1011 and the second antenna 1012 simultaneously fails to meet the preset strength requirements. If the received signal strength of both the first antenna 1011 and the second antenna 1012 fails to meet the preset strength requirements, i.e., simultaneously fails to meet the preset strength requirements, then it is determined that the preset condition has been met.

[0103] Understandably, since the third antenna 1013 is not used for signal transmission and reception in the preset frequency band, the signal processing component 103 can obtain the target frequency band signal from the full-band signal received by the third antenna 1013 under preset conditions, and connect the third antenna 1013 to the detection component 1021 to transmit the target frequency band signal to the detection component 1021. This will not affect the normal signal transmission and reception of the NR band, and the target frequency band signal on the third antenna 1013 can be obtained. Furthermore, the detection component 1021 can detect the signal quality parameters of the target frequency band signal and obtain reference quality parameters such as RSRP. The RF chip 102 can detect the signal quality parameters of the target frequency band on the first antenna 1011 and the second antenna 1012 through signal modulation, such as RSRP. In this way, the RSRP of the three antennas in the circuit is detected in real time, so that the RF chip 102 can select the antenna currently used for the target frequency band according to the received signal strength RSRP of the target frequency band on the three antennas, thereby improving the signal reception quality of the target frequency band. This makes the antenna selection operation more reasonable, and can avoid the problem of signal delay or stuttering that occurs when switching directly to the third antenna 1013 without improving the signal quality, when the received signal strength of the target frequency band on the third antenna 1013 is unknown.

[0104] Figure 2 This is a circuit schematic of a three-antenna switching circuit in existing technology, such as... Figure 2As shown, the three-antenna switching circuit includes an RF chip 102, an LTE power amplifier (PA) LTE PA104 for the LTE band, a PRX low noise amplifier (LNA) PRX LNA105 for the LTE TRX, an LTE TX front-end processing module LTE TXM106 for the TX band, a DRX LNA107 for the LTE DRX, and a DRX front-end module (FEM) 108 for the DRX. The circuit also includes an NR PA109 and a directional coupler 111. The NR PA109 and the directional coupler 111 are connected via a switch 110. The RF chip 102 contains a power detection circuit 1021 for detecting the transmit power of the NR band. The RF chip 102 is connected to the LTE PA104, PRX LNA105, DRX LNA107, and NR PA109, respectively. The directional coupler 111 is also connected to the power detection circuit 1021 in the RF chip 102. LTE TXM106, FEM108 and directional coupler 111 are all connected to 3P3T switch 1015. 3P3T switch 1015 is also connected to three antennas ANT1 (denoted as 1011), ANT2 (denoted as 1013) and ANT3 (denoted as 1012) respectively through radio frequency (RF) test socket 1014. RF test socket 1014 and each antenna are connected by coaxial cables.

[0105] It is understandable that the LTE band supports MIMO antennas. Therefore, the antenna switching decision can be made based on the received signal strength of each of the three antennas in the LTE band within the three-antenna switching circuit, ensuring uninterrupted LTE band antenna signal for the mobile phone in different application scenarios. See also Figure 2 For LTE frequency bands with only two receiving paths, PRX and PRX2, the received signal strength RSRP of PRX and PRX2 can only be detected in real time by the RF chip. Since there is no LTE frequency band receiving path connected between the RF chip and the third antenna ANT2, the received signal strength corresponding to the LTE frequency band on ANT2 cannot be detected in real time. In existing technologies, blind cutting or time slot extraction detection methods are usually used.

[0106] Specifically, blind switching methods include: if the antenna signals of both PRXs are poor, the transmit antenna (TX) is typically blindly switched to a third antenna. If the signal strength improves, it remains on the third antenna, becoming the TX antenna for the LTE band; otherwise, it switches back to the original antenna. Time-slot detection methods include: switching the TRX or DRX to ANT2 and detecting the received signal strength of the LTE band on ANT2. If the received signal strength of the LTE band on ANT2 is stronger, the transmit antenna (TX) is switched from the original antenna to ANT2. However, with blind switching, since the signal strength of ANT2 is unknown, if the LTE band signal strength on ANT2 is worse, the signal may deteriorate after switching, leading to signal delays or stuttering. With time-slot detection, because a time slot is extracted to interrupt the original receiving path to detect the signal strength of ANT2, the receiving path signal becomes discontinuous, affecting uplink and downlink throughput.

[0107] Figure 3 This is a schematic diagram of another antenna selection circuit provided in an embodiment of this application, as shown below. Figure 3 As shown, the antenna selection circuit in this embodiment of the application utilizes the power detection circuit of the RF chip 102, namely the detection component 1021 in this embodiment of the application, to optimize the three-antenna switching logic. The signal processing component 103 in this embodiment of the application includes: a first conduction component 1031, a filter 1032, and a second conduction component 1033. Figure 2 The difference lies in that the circuit of this application does not use a directional coupler 111. Instead, it uses a first conducting component 1031, such as a bidirectional coupler, connected to a second conducting component 1033, such as an SPDT switch, and a front-end component of the NR band, such as a power amplifier and a switch of the NR band. The SPDT switch 1033 is connected to the power detection circuit 1021. A filter 1032, which can be a bandpass filter (BPF), is also provided between the bidirectional coupler 1031 and the SPDT switch 1033. One path of the bidirectional coupler 1031 is directly connected to the power detection circuit 1021 through the SPDT switch 1033, and the other path is connected to the power detection circuit 1021 through the BPF 1032 and the SPDT switch 1033. The antenna selection circuit can, under preset conditions, obtain the signal of the target frequency band, such as the LTE frequency band, from the full-band signal received by the third antenna 1013, i.e., ANT2, in the antenna assembly 101, and connect ANT2 to the detection component, i.e., the power detection circuit 1021, so as to transmit the LTE frequency band signal to the power detection circuit 1021, and detect the signal quality parameter of the LTE frequency band signal, i.e., the received signal power, through the power detection circuit 1021, as a reference quality parameter.

[0108] The power detection circuit 1021 can send the detected received signal power value to the radio frequency chip 102. The radio frequency chip 102 can select the antenna currently used in the LTE frequency band through a 3P3T switch based on reference quality parameters. Specifically, if the reference quality parameters are not less than a preset threshold, the radio frequency chip 102 can select the third antenna 1013 (ANT2) as the target frequency band, such as the LTE TRX currently used transceiver antenna, and select the receiving antenna for the target frequency band from the first antenna 1011 and the second antenna 1012, for example, keeping ANT3 as LTE DRX. If the reference quality parameters are less than the preset threshold, the radio frequency chip 102 will determine the first antenna 1011 and the second antenna 1012 as the antennas currently used in the target frequency band; for example, ANT1 (first antenna 1011) is LTE TRX, and ANT3 (second antenna 1012) is LTE DRX.

[0109] Figure 4 This is a circuit schematic diagram of another antenna selection circuit provided in the embodiments of this application, such as... Figure 4 As shown, the signal processing component 103 in this embodiment includes: a first conducting component 1031, a filter 1032, and a second conducting component 1033. Figure 2 The difference lies in that, in the circuit of this application, a first conducting component 1031, such as an SPDT switch, is connected to the antenna switch (i.e., the 3P3T switch) and the directional coupler 111 in the antenna assembly 101, respectively. The directional coupler 111 is also connected to the RF chip 102 through an NR band switch and an NA PA. A second conducting component 1033, i.e., another SPDT switch 1033 and a filter 1032, is also provided between the SPDT switch 1031 and the power detection circuit (i.e., the detection component 1021 in this embodiment). The filter 1032 can be a bandpass filter (BPF). The directional coupler 111 is directly connected to the power detection circuit 1021 through the SPDT switch 1033. The SPDT switch 1031 is connected to the power detection circuit 1021 through the BPF 1032 and the SPDT switch 1033. The antenna selection circuit, under preset conditions, can acquire the target frequency band signal, such as the LTE band, from the full-band signal received by the third antenna 1013 (ANT2) in antenna assembly 101. It then connects ANT2 to the power detection circuit 1021 to transmit the LTE band signal. The power detection circuit 1021 detects the signal quality parameter (received signal power) of the LTE band signal, using it as a reference quality parameter. The power detection circuit 1021 sends the detected received signal power value to the RF chip 102. The RF chip 102 can then select the antenna currently used for the LTE band based on the reference quality parameter via an antenna switch (3P3T switch). The specific selection logic can be found in [reference needed]. Figure 3 The relevant description of the antenna selection circuit will not be repeated here.

[0110] It should be noted that the reference Figure 3 and Figure 4 The antenna selection circuit in this embodiment can monitor the received signal strength of the LTE band on ANT1 and ANT3 in real time through the RF chip, and detect the received signal strength of the LTE band on ANT2 in real time through the power detection circuit in the RF chip, thereby providing a basis for the antenna selection of the RF chip. Compared with the blind switching method or time slot detection method of the prior art, it will not cut off the receiving path of the LTE band. Therefore, it can avoid the problem that the signal quality of the LTE band is not improved after directly switching to the third antenna, i.e., ANT2, resulting in signal delay or stuttering, as well as discontinuous receiving path, which affects uplink and downlink throughput.

[0111] Based on the above embodiments, this application provides an antenna selection method applied to the antenna selection circuit described in the above embodiments. The circuit includes: an antenna assembly comprising a first antenna, a second antenna, and a third antenna; a radio frequency chip connected to each antenna in the antenna assembly; a detection component disposed in the radio frequency chip; and a signal processing component connected to the third antenna and the detection component, respectively. Figure 5 As shown, the method includes:

[0112] Step S301: Under the condition that the signal processing component meets the preset conditions, the target frequency band signal is obtained from the full-band signal received by the third antenna, and the connection between the third antenna and the detection component is turned on so as to transmit the target frequency band signal to the detection component.

[0113] Step S302: The signal quality parameters of the signal in the target frequency band are detected by the detection component to obtain reference quality parameters;

[0114] Step S303: The radio frequency chip selects the antenna currently in use from the antenna assembly according to the reference quality parameters.

[0115] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional descriptions of the signal processing unit, detection component and radio frequency chip in the circuit embodiment, which will not be repeated here.

[0116] The antenna selection method of this application has the same advantages as the prior art and circuit embodiments, and will not be repeated here.

[0117] Optionally, the signal processing component includes a first conducting component, a filter, and a second conducting component; the first conducting component is connected to the third antenna and the filter respectively, and the second conducting component is connected to the filter and the detection component respectively. Step S301 may include the following steps:

[0118] Step S3011: The connection between the third antenna and the filter is turned on by the first conducting component when the preset condition is met, so as to transmit the full-band signal received by the third antenna to the filter.

[0119] Step S3012: Filter the full-band signal using the filter to obtain the signal of the target frequency band;

[0120] Step S3013: The connection between the filter and the detection component is turned on by the second conducting component when the preset condition is met, so as to transmit the signal of the target frequency band to the detection component.

[0121] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional descriptions of the first conducting component, filter and second conducting component in the signal processing unit in the circuit embodiment, which will not be repeated here.

[0122] The antenna selection method of this application has the same advantages as the prior art and circuit embodiments, and will not be repeated here.

[0123] Optionally, the first conducting component is a bidirectional coupler, which is also connected to a signal generating component; the signal generating component is used to generate a signal in a preset frequency band, and step S3011 may include the following steps:

[0124] Step S3011a: The connection between the third antenna and the filter is established through the bidirectional coupler when the preset conditions are met;

[0125] Optionally, the method further includes:

[0126] Step S401: If the preset conditions are not met, the connection between the signal generation component and the third antenna is established through the bidirectional coupler, so that the signal of the preset frequency band generated by the signal generation component is transmitted to the third antenna through the bidirectional coupler, and the signal of the preset frequency band is sent through the third antenna.

[0127] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional description of the bidirectional coupler in the circuit embodiment, and will not be repeated here.

[0128] Optionally, the second conducting component is also connected to the bidirectional coupler, and the method further includes:

[0129] Step S501: If the preset conditions are not met, the second conducting component connects the bidirectional coupler to the detection component to detect the signal quality parameters of the signal in the preset frequency band.

[0130] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional description of the second conducting component in the circuit embodiment, which will not be repeated here.

[0131] Optionally, the first conducting component is a single-pole double-throw switch, which is also connected to a directional coupler. The directional coupler is connected to a signal generating component, which is used to generate a signal in a preset frequency band. Step S3011 may further include the following steps:

[0132] Step S3011b: Connect the third antenna and the filter by using a single-pole double-throw switch when the preset conditions are met.

[0133] Optionally, the method further includes:

[0134] Step S601: If the preset condition is not met by the single-pole double-throw switch, the connection between the directional coupler and the third antenna is turned on, so that the signal of the preset frequency band generated by the signal generation component is transmitted to the third antenna through the directional coupler, and the signal of the preset frequency band is sent through the third antenna.

[0135] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional description of the single-pole double-throw switch in the circuit embodiment, which will not be repeated here.

[0136] Optionally, the second conducting component is also connected to the directional coupler, and the method further includes:

[0137] Step S701: If the preset condition is not met, the second conducting component connects the directional coupler and the detection component to detect the signal quality parameters of the signal in the preset frequency band through the detection component.

[0138] In the embodiments of this application, the specific implementation of the steps can be referred to the relevant functional description of the second conducting component in the circuit embodiment, which will not be repeated here.

[0139] Optionally, step S303 may include the following steps:

[0140] Step S3031: The currently used antenna includes the currently used transceiver antenna and the currently used receiving antenna on the target frequency band; the radio frequency chip selects the third antenna as the currently used transceiver antenna on the target frequency band when the reference quality parameter is not less than a preset parameter threshold, and selects the receiving antenna of the target frequency band from the first antenna and the second antenna.

[0141] In this embodiment of the application, when the reference quality parameter is not less than the preset parameter threshold, the radio frequency chip can select the third antenna as the transmit and receive antenna currently used in the target frequency band through the antenna switch in the antenna assembly, and select the antenna with stronger received signal strength in the target frequency band from the first antenna and the second antenna as the receiving antenna of the target frequency band.

[0142] Step S3032: When the reference quality parameter is less than a preset parameter threshold, the radio frequency chip selects the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna.

[0143] In this embodiment of the application, when the reference quality parameter is less than the preset parameter threshold, the radio frequency chip can detect the received signal strength of the target frequency band on the first antenna and the second antenna, and use the antenna with stronger received signal strength of the target frequency band as the transceiver antenna of the target frequency band, and the other as the receiving antenna.

[0144] It should be noted that the specific implementation of the steps in the method embodiment can be referred to the relevant functional description of the RF chip in the circuit embodiment, and will not be repeated here.

[0145] Optionally, the preset conditions include the fact that the received signal strengths of the first antenna and the second antenna do not meet the preset strength requirements at the same time, and the third antenna is not used for signal transmission and reception in the preset frequency band.

[0146] In this embodiment, when the third antenna is not used for signal transmission and reception in a preset frequency band (e.g., the LTE bands on the first and second antennas are operational, but the NR band on the third antenna is not operational, i.e., the third antenna is not used for signal transmission and reception in the preset frequency band), the RF chip can detect the received signal strength of the first and second antennas using signal modulation and compare them with preset strength requirements to determine whether the received signal strengths of the first and second antennas simultaneously fail to meet the preset strength requirements. If the received signal strengths of both the first and second antennas fail to meet the preset strength requirements, i.e., they simultaneously fail to meet the preset strength requirements, then it is determined that the preset condition has been met.

[0147] Optionally, during signal transmission and reception in the target frequency band, if the received signal strength of the transceiver antenna in the target frequency band is less than a preset signal strength threshold, but the received signal strength of the receiving antenna is not less than the preset signal strength threshold (i.e., only one antenna is blocked, resulting in poor signal quality for that antenna), switching can be performed between the transceiver antenna and the receiving antenna in the target frequency band to improve the signal quality of the transceiver antenna in the target frequency band. For example, if the first antenna 1011 is the LTE TRX transceiver antenna in the LTE frequency band, and the second antenna 1012 is the LTE DRX auxiliary receiving antenna in the LTE frequency band, if the received signal strength on the first antenna 1011 is less than the preset signal strength threshold, but the received signal strength on the second antenna 1012 is not less than the preset signal strength threshold, switching can be performed between the first antenna 1011 and the second antenna 1012. That is, the second antenna 1012 can be used for LTE TRX, and the first antenna 1011 can be used for LTE DRX to improve the signal quality of the transceiver antenna in the LTE frequency band.

[0148] Figure 6 This is a flowchart illustrating another antenna selection method provided in an embodiment of this application, as shown below. Figure 6 As shown, this antenna selection method is applied to the antenna selection circuit provided in the aforementioned embodiment. The first antenna in the antenna selection circuit is ANT1, the second antenna is ANT3, and the third antenna is ANT2. ANT1 and ANT3 are used for signal connection in the 2RX band. When both ANT1 and ANT3 are blocked, i.e., the signal quality on both ANT1 and ANT3 is poor, the received signal strength of ANT2, i.e., the reference quality parameter in this embodiment, can be detected by a detection component such as a power detection circuit to determine whether ANT2 is blocked. For the LTE band, when the reference quality parameter is not less than a preset parameter threshold, the RF chip in the antenna selection circuit can control the antenna assembly to switch the LTE band transceiver antenna LTE TRX to the third antenna, ANT2, with ANT3 serving as the LTE band auxiliary receiving antenna LTE DRX, and switching ANT1 to the NR band transceiver antenna NR TRX. When the reference quality parameter is less than the preset parameter threshold, the RF chip does not switch the LTE TRX to the third antenna, ANT2.

[0149] If either ANT1 or ANT3 is blocked, or if both ANT1 and ANT3 are blocked and the reference quality parameter on ANT2 is less than a preset threshold, then antenna switching can be performed between ANT1 and ANT3 if the received signal strength on ANT1 is less than a preset signal strength threshold and the received signal strength on ANT3 is not less than a preset signal strength threshold. For the LTE band, ANT3 can be used for LTE TRX and ANT1 for LTE DRX to improve the signal quality of the transceiver antennas (TRX) in the LTE band.

[0150] As the method embodiments are basically similar to the circuit embodiments, the description is relatively simple, and relevant parts can be found in the description of the circuit embodiments.

[0151] The antenna selection method of this application has the same advantages as the prior art and circuit embodiments, and will not be repeated here.

[0152] This application provides an electronic device 60, see [link to relevant documentation] Figure 7 The electronic device includes the antenna selection circuit 601 as described above.

[0153] The electronic devices of the present application have the same advantages as those of the prior art and circuit embodiments, and will not be repeated here.

[0154] Based on the same technical concept as the foregoing embodiments, this application provides another electronic device 70, see [link to previous document]. Figure 8 The electronic device 70 includes a processor 701 and a memory 702; wherein the memory 702 is used to store computer programs and data; the processor 701 is used to execute the computer program stored in the memory 702 to implement any of the antenna selection methods in the foregoing embodiments.

[0155] In practical applications, the aforementioned memory 702 can provide instructions and data to the processor 701. The aforementioned processor 701 can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processing (DSP), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), CPU, processor, microcontroller, and microprocessor.

[0156] Figure 9 To illustrate the structure of another electronic device 80 according to an embodiment of this application, as shown in the diagram... Figure 9 As shown, the electronic device 80 includes, but is not limited to, components such as: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, antenna selection circuit 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

[0157] Those skilled in the art will understand that the electronic device 80 may also include a power supply for powering various components, such as a battery. The power supply may be logically connected to the processor 810 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 8 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0158] It should be understood that, in this embodiment, the input unit 804 may include a graphics processing unit (GPU) 804' and a microphone 804'. The GPU 804' processes image data of still images or videos obtained by an image capture device, such as a camera, in video capture mode or image capture mode. The display unit 806 may include a display panel 806', which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 807 includes a touch panel 807' and at least one of other input devices 807'. The touch panel 807' is also called a touch screen. The touch panel 807' may include a touch detection device and a touch controller. Other input devices 807' may include, but are not limited to, a physical keyboard, function keys, a trackball, a mouse, and a joystick. Among them, function keys, such as volume control buttons and power buttons, will not be described in detail here.

[0159] The memory 809 can be used to store software programs and various data. Furthermore, the memory 809 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus RAM (DRRAM). The memory 809 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0160] Processor 810 may include one or at least two processing units. Optionally, processor 810 integrates an application processor and a modem processor, wherein the application processor mainly handles operations related to the operating system, user interface, and applications, while the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 810.

[0161] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described foreign object detection method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0162] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0163] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described foreign object detection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0164] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0165] This application provides a computer program product that is stored in a storage medium and executed by at least one processor to implement the various processes of the data writing method embodiment of the target memory described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0166] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0167] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium, such as ROM / RAM, magnetic disk, or optical disk, and includes several instructions to cause a terminal, which may be a mobile phone, computer, server, or network device, to execute the methods described in the various embodiments of this application.

[0168] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An antenna selection circuit, characterized in that, The circuit includes: an antenna assembly comprising a first antenna, a second antenna, and a third antenna; a radio frequency chip connected to each antenna in the antenna assembly; a detection component disposed in the radio frequency chip; and a signal processing component connected to the third antenna and the detection component respectively. The signal processing component is used to obtain the target frequency band signal from the full-band signal received by the third antenna when a preset condition is met, and to connect the third antenna to the detection component so as to transmit the target frequency band signal to the detection component. The preset condition includes that the received signal strength of the first antenna and the second antenna does not meet the preset strength requirement at the same time, and the third antenna is not used for signal transmission and reception of the preset frequency band. The detection component is used to detect the signal quality parameters of the signal in the target frequency band and obtain reference quality parameters; The radio frequency chip is used to select the currently used antenna from the antenna assembly based on the reference quality parameters.

2. The circuit according to claim 1, characterized in that, The signal processing component includes a first conducting component, a filter, and a second conducting component; the first conducting component is connected to the third antenna and the filter, respectively, and the second conducting component is connected to the filter and the detection component, respectively. The first conducting component is used to conduct the connection between the third antenna and the filter when the preset condition is met, so as to transmit the full-band signal received by the third antenna to the filter; The filter is used to filter the full-band signal to obtain the signal of the target frequency band; The second conducting component is used to conduct the connection between the filter and the detection component when the preset condition is met, so as to transmit the signal of the target frequency band to the detection component.

3. The circuit according to claim 2, characterized in that, The first conducting component is a bidirectional coupler, which is also connected to a signal generating component; the signal generating component is used to generate a signal in a preset frequency band. The bidirectional coupler is used to connect the third antenna and the filter when the preset condition is met. The bidirectional coupler is also used to connect the signal generation component to the third antenna when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generation component to the third antenna through the bidirectional coupler, and to send the signal of the preset frequency band through the third antenna.

4. The circuit according to claim 3, characterized in that, The second conducting component is also connected to the bidirectional coupler; The second conducting component is also used to conduct the connection between the bidirectional coupler and the detection component when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component.

5. The circuit according to claim 2, characterized in that, The first conducting component is a single-pole double-throw switch. The single-pole double-throw switch is also connected to a directional coupler. The directional coupler is connected to a signal generating component. The signal generating component is used to generate a signal in a preset frequency band. The single-pole double-throw switch is used to connect the third antenna and the filter when the preset condition is met. The single-pole double-throw switch is also used to connect the directional coupler to the third antenna when the preset condition is not met, so as to transmit the signal of the preset frequency band generated by the signal generation component to the third antenna through the directional coupler, and to send the signal of the preset frequency band through the third antenna.

6. The circuit according to claim 5, characterized in that, The second conducting component is also connected to the directional coupler; The second conducting component is also used to conduct the connection between the directional coupler and the detection component when the preset condition is not met, so as to detect the signal quality parameters of the signal in the preset frequency band through the detection component.

7. The circuit according to any one of claims 1-6, characterized in that, The currently used antenna includes the currently used transceiver antenna and the currently used receiving antenna on the target frequency band; the radio frequency chip is specifically used to select the third antenna as the currently used transceiver antenna on the target frequency band when the reference quality parameter is not less than a preset parameter threshold, and to select the receiving antenna of the target frequency band from the first antenna and the second antenna; The radio frequency chip is further configured to select the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna when the reference quality parameter is less than a preset parameter threshold.

8. An antenna selection method, characterized in that, An antenna selection circuit as described in any one of claims 1-7, the circuit comprising: an antenna assembly including a first antenna, a second antenna, and a third antenna; a radio frequency chip respectively connected to each antenna in the antenna assembly; a detection component disposed in the radio frequency chip; and a signal processing component respectively connected to the third antenna and the detection component, the method comprising: The signal processing component obtains the target frequency band signal from the full-band signal received by the third antenna under preset conditions, and connects the third antenna to the detection component to transmit the target frequency band signal to the detection component. The preset conditions include that the received signal strength of the first antenna and the second antenna does not meet the preset strength requirement at the same time, and the third antenna is not used for signal transmission and reception of the preset frequency band. The detection component detects the signal quality parameters of the signal in the target frequency band to obtain reference quality parameters. The radio frequency chip selects the currently used antenna from the antenna assembly based on the reference quality parameters.

9. The method according to claim 8, characterized in that, The currently used antennas include the currently used transceiver antennas and the currently used receiving antennas on the target frequency band; The step of selecting the currently used antenna from the antenna assembly based on the reference quality parameters via the radio frequency chip includes: The radio frequency chip selects the third antenna as the currently used transceiver antenna when the reference quality parameter is not less than a preset parameter threshold, and selects the currently used receiving antenna from the first antenna and the second antenna. When the reference quality parameter is less than a preset parameter threshold, the radio frequency chip selects the currently used transceiver antenna and the currently used receiving antenna from the first antenna and the second antenna.

10. An electronic device, characterized in that, Includes an antenna selection circuit as described in any one of claims 1-7, for performing an antenna selection method as described in any one of claims 8-9.

11. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the antenna selection method as described in any one of claims 8-9.

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