Multi-channel amplitude-phase detection device and method, and electronic equipment

Abstract

The invention provides a multichannel amplitude-phase detection device and method, and electronic equipment, and is applied to the technical field of power electronics, so as to reduce the influence of temperature drift on the detection result of the phase difference and the amplitude difference of output signals between radio frequency channels. The multi-channel amplitude-phase detection device can be connected with each radio frequency channel through the coupler, and transmits a signal output by the coupling end of the coupler to the power divider. And then the signal is subjected to power division to two multiplexers through a power divider. And the common ends of the two multiplexers are respectively connected with one radio frequency input end of the orthogonal frequency conversion circuit. The orthogonal frequency conversion circuit can output a detection signal containing an image frequency signal and a main frequency signal through a signal input by the radio frequency input end and a local oscillation signal provided by the local oscillation source, so that the amplitude difference and the phase difference among the plurality of radio frequency channels can be determined according to the detection signal subsequently, and the amplitude and phase calibration can be carried out on the plurality of radio frequency channels.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, and in particular to a multi-channel amplitude and phase detection device and method, and electronic equipment. Background Technology

[0002] In scenarios requiring multi-channel coherent microwave signals to form beams, such as phased array systems and multiple-input multiple-output (MIMO) systems, hundreds or even thousands of antennas and transceivers are needed to form a multi-beam antenna system. In such systems, each RF channel must meet specific amplitude and phase relationships. If the amplitude or phase of the output signal from an RF channel deviates, it can lead to beam pattern distortion or the beam failing to align with the target, resulting in a decrease in the system's signal-to-noise ratio, gain, and communication quality. Typically, phase deviation in multi-channel coherent microwave signals originates from factors such as noise, reference clock stability, impedance matching, device consistency, and temperature drift. Temperature drift, in particular, is caused by changes in transistor parameters due to ambient temperature variations, leading to instability in the static operating point and consequently, instability in the circuit's dynamic parameters. This results in changes in the gain and phase of the RF channels. Therefore, multi-channel calibration techniques are needed to track the temperature drift of the RF channels and achieve amplitude and phase consistency calibration, i.e., amplitude-phase calibration. To achieve amplitude and phase calibration of the radio frequency (RF) channels, it is necessary to detect the phase and amplitude differences of the output signals between the RF channels. However, temperature drift can easily affect the components in the detection circuit, leading to significant errors in the detected amplitude and phase differences of the output signals. Consequently, amplitude and phase errors still exist in the calibrated signals. Therefore, a solution is urgently needed to address these issues. Summary of the Invention

[0003] This application provides a multi-channel amplitude and phase detection device and method, and an electronic device, to reduce the impact of temperature drift on the detection results of phase and amplitude differences of output signals between radio frequency channels.

[0004] To achieve the above objectives, the embodiments of this application provide the following technical solutions.

[0005] In a first aspect, a multi-channel amplitude and phase detection device is provided. This device includes a first power divider, a first coupler, a second power divider, a second coupler, a first multiplexer, a second multiplexer, a quadrature frequency converter circuit, and a local oscillator. The input terminal of the first coupler is connected to a first radio frequency (RF) channel; the input terminal of the second coupler is connected to a second RF channel. The common terminal of the first power divider is connected to the coupling terminal of the first coupler. The first output terminal of the first power divider is connected to the first selection terminal of the first multiplexer; the second output terminal of the first power divider is connected to the first selection terminal of the second multiplexer. The common terminal of the second power divider is connected to the coupling terminal of the second coupler; the first output terminal of the second power divider is connected to the second selection terminal of the first multiplexer; the second output terminal of the second power divider is connected to the second selection terminal of the second multiplexer. The first RF input terminal of the quadrature frequency converter circuit is connected to the common terminal of the first multiplexer; the second RF input terminal of the quadrature frequency converter circuit is connected to the common terminal of the second multiplexer. The local oscillator is connected to the local oscillator input terminal of the quadrature frequency converter circuit. The quadrature frequency converter circuit is used to output an output signal containing the main frequency signal and the mirror signal based on the signals input from the first RF input terminal and the second RF input terminal.

[0006] When the two signals input to the two RF input terminals of the quadrature frequency converter circuit have amplitude and phase imbalances, a mirror frequency signal is generated. The amplitude and phase differences between this mirror frequency signal and the main frequency signal output by the quadrature frequency converter circuit are related to the amplitude and phase differences between the two signals input to the two RF input terminals. Therefore, by obtaining the phase and amplitude differences between the main frequency signal output by the quadrature frequency converter circuit and the mirror frequency signal, the amplitude and phase differences between the RF channels can be determined simultaneously. Furthermore, when the components experience temperature drift due to temperature changes, the output power of the quadrature frequency converter circuit will shift. However, the output power of the main frequency signal and the mirror frequency signal output by the quadrature frequency converter circuit will shift together, i.e., increase or decrease simultaneously, but the difference between them will not change. Therefore, the calculated amplitude and phase differences will not change. Thus, when performing amplitude and phase calibration on multiple RF channels, obtaining the detection signals between the RF channels using the aforementioned multi-channel amplitude and phase detection device has excellent resistance to temperature drift, reducing the impact of temperature drift on the detection results of the phase and amplitude differences of the output signals between the RF channels, thereby improving calibration accuracy.

[0007] In one possible implementation, the multi-channel amplitude and phase detection device further includes a spectrum detection module connected to the output of the quadrature frequency converter circuit. This spectrum detection module generates a corresponding spectrum based on the detection signal output by the quadrature frequency converter circuit. In this way, the multi-channel amplitude and phase detection device can directly generate a corresponding spectrum based on the output signal of the quadrature frequency converter circuit through the spectrum detection module. This allows the subsequent controller to directly adjust the amplitude and phase of the signals output by the first and second radio frequency channels based on the spectrum, eliminating the need for the controller to perform the aforementioned process, thereby reducing the controller's occupancy and power consumption.

[0008] In one possible implementation, the quadrature frequency converter circuit includes a first phase shifter, a second phase shifter, a first mixer, a second mixer, a third power divider, and a combiner. The first input terminal of the first mixer is connected to the common terminal of a first multiplexer via the first phase shifter, and the second input terminal of the first mixer is connected to the first output terminal of the third power divider. The first input terminal of the second mixer is connected to the common terminal of the second multiplexer, and the second input terminal of the second mixer is connected to the second output terminal of the third power divider via the second phase shifter. The input terminal of the third power divider is connected to a local oscillator. The first input terminal of the combiner is connected to the output terminal of the first mixer, and the second input terminal of the combiner is connected to the output terminal of the second mixer. In this manner, the output signal of the quadrature frequency converter circuit can simultaneously contain both the main frequency signal and the image frequency signal, thereby facilitating the determination of the phase difference and amplitude difference between the main frequency signal and the image frequency signal based on the output signal.

[0009] In one possible implementation, the quadrature frequency converter circuit includes: a first phase shifter, a second phase shifter, a first mixer, a second mixer, a third power divider, and a combiner. The first input terminal of the first mixer is connected to the common terminal of the first multiplexer, and the second input terminal of the first mixer is connected to the first output terminal of the third power divider. The first input terminal of the second mixer is connected to the common terminal of the second multiplexer via the first phase shifter, and the second input terminal of the second mixer is connected to the second output terminal of the third power divider via the second phase shifter. The first input terminal of the combiner is connected to the output terminal of the first mixer, and the second input terminal of the combiner is connected to the output terminal of the second mixer. In this manner, the output signal of the quadrature frequency converter circuit can simultaneously contain both the main frequency signal and the image frequency signal, thereby facilitating the determination of the phase difference and amplitude difference between the main frequency signal and the image frequency signal based on the output signal.

[0010] In one possible implementation, the aforementioned multi-channel amplitude and phase detection device further includes a fourth power divider and a third coupler. The input terminal of the third coupler is connected to the third RF channel; the common terminal of the fourth power divider is connected to the coupling terminal of the third coupler; the first output terminal of the fourth power divider is connected to the third selection terminal of the first multiplexer; and the second output terminal of the fourth power divider is connected to the third selection terminal of the second multiplexer. In this manner, the multi-channel amplitude and phase detection device can perform amplitude and phase detection on three RF channels, from the first to the third RF channel. Similarly, when amplitude and phase detection is required on more RF channels, the device can be expanded using the above method to meet the needs of more application scenarios.

[0011] Secondly, a multi-channel amplitude and phase detection method is provided for use in the aforementioned multi-channel amplitude and phase detection device. When performing amplitude and phase calibration on the first and second radio frequency channels, this method first controls a first multiplexer to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature converter circuit, and controls a second multiplexer to connect the second input terminal of the second power divider to the second radio frequency input terminal of the quadrature converter circuit, thereby obtaining a first detection signal between the first and second radio frequency channels. The first detection signal includes a first image frequency signal and a first main frequency signal.

[0012] In one possible implementation, during amplitude and phase calibration of the first and second radio frequency channels, a first multiplexer is controlled to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature converter circuit, and the first multiplexer is also controlled to connect the second input terminal of the first power divider to the second radio frequency input terminal of the quadrature converter circuit, in order to obtain a second detection signal for the first radio frequency channel. The second detection signal includes a second image frequency signal and a second main frequency signal.

[0013] In one possible implementation, the multi-channel amplitude and phase detection device further includes a spectrum detection module connected to the output of the quadrature frequency converter circuit. Based on this, the method further includes generating a spectrum corresponding to the first detection signal or the second detection signal through the spectrum detection module.

[0014] Thirdly, an electronic device is provided, comprising a first radio frequency (RF) channel, a second RF channel, a multi-channel amplitude and phase detection device connected to the first and second RF channels, a controller connected to the multi-channel amplitude and phase detection device, and a frequency source connected to the controller. The frequency source is also connected to the first and second RF channels for adjusting the amplitude and phase of the signals output by the first and second RF channels. The controller controls a first multiplexer to connect a first input terminal of a first power divider to a first RF input terminal of a quadrature converter circuit, and controls a second multiplexer to connect a second input terminal of a second power divider to a second RF input terminal of the quadrature converter circuit, to obtain a first detection signal between the first and second RF channels. The controller is also used to control the frequency source to perform amplitude and phase calibration on the first and second RF channels based on the first detection signal.

[0015] In one possible implementation, the controller is further configured to control the first multiplexer to connect the first input terminal of the first power divider to the first RF input terminal of the quadrature converter circuit, and to control the first multiplexer to connect the second input terminal of the first power divider to the second RF input terminal of the quadrature converter circuit, thereby obtaining a second detection signal for the first RF channel. Then, the multi-channel amplitude and phase detection device is calibrated based on the second detection signal.

[0016] Fourthly, a computer-readable storage medium is provided that can store computer program instructions. When executed by a processor, the computer program instructions can implement the multi-channel amplitude and phase detection method in any of the possible embodiments of the second aspect described above.

[0017] Fifthly, a computer program product is provided, which, when executed by a processor, can implement the multi-channel amplitude and phase detection method in any of the possible embodiments of the second aspect described above.

[0018] The technical principles and beneficial effects of the second to fifth aspects mentioned above can be referred to the relevant description of the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a radar device;

[0020] Figure 2 This is a schematic diagram of the structure of a quantum computing device provided in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of a multi-channel calibration circuit provided in an embodiment of this application;

[0022] Figure 4This is a schematic diagram of another multi-channel calibration circuit provided in an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of another multi-channel calibration circuit provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the structure of a multi-channel amplitude and phase detection device provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the structure of an orthogonal frequency converter circuit provided in an embodiment of this application;

[0026] Figure 8 A spectrum diagram of the signal output by an orthogonal frequency converter circuit provided in an embodiment of this application;

[0027] Figure 9 A mapping diagram of amplitude difference and phase difference with sideband suppression ratio provided for embodiments of this application;

[0028] Figure 10 This is a schematic diagram of another quadrature frequency converter circuit provided in an embodiment of this application;

[0029] Figure 11 A spectrum diagram of the signal output by another quadrature frequency converter circuit provided in the embodiments of this application;

[0030] Figure 12 This is a schematic diagram of the structure of another multi-channel amplitude and phase detection device provided in the embodiments of this application;

[0031] Figure 13 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0032] Figure 14 A schematic flowchart of an amplitude and phase detection method provided in an embodiment of this application;

[0033] Figure 15 This is a flowchart illustrating a multi-channel amplitude and phase detection method provided in an embodiment of this application. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0035] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b, and c, where a, b, and c can be single or multiple. Furthermore, in the embodiments of this application, the words "first," "second," etc., do not limit the quantity or order.

[0036] It should be noted that in this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. The terms "connection," "coupling," etc., involved in the embodiments of this application should be interpreted broadly. For example, they can refer to a physical direct connection or an indirect connection implemented through electronic devices, such as connections implemented through resistors, inductors, capacitors, or other electronic devices.

[0037] To facilitate understanding of the embodiments of this application, the technologies and terms involved in the embodiments of this application will be introduced first below.

[0038] Coherence: Coherence, also known as coherence, refers to the deterministic nature of the initial phase between pulses. That is, the initial phase of the first pulse may be random, but the phase between the subsequent pulses and the first pulse is deterministic. This is the basis for extracting Doppler information.

[0039] Main frequency signal: The main frequency signal is the main frequency signal output by the quadrature frequency converter circuit.

[0040] Image frequency signal: In existing communication systems, due to imperfections in hardware and RF modulation chips, the output signal of the quadrature converter circuit exhibits amplitude imbalance and phase imbalance between in-phase and quadrature components. This amplitude and phase imbalance generates the image frequency signal, or simply image frequency signal.

[0041] Sideband rejection ratio: The sideband rejection ratio is the ratio between the main frequency signal and the image frequency signal, and is used to measure the sideband rejection effect of the quadrature frequency converter circuit.

[0042] Amplitude and phase calibration: Amplitude and phase calibration refers to making multiple radio frequency channels output radio frequency signals with the same phase and amplitude.

[0043] The present application will now be described in detail with reference to the accompanying drawings and embodiments:

[0044] like Figure 1 As shown, in a radar device 100 that forms a beam using multi-channel coherent microwave signals, hundreds or even thousands of antennas 110 and transceivers 120 are required to form a multi-beam antenna system. The radar device 100 can be a phased array radar, a multiple-input multiple-output (MIMO) radar, etc. In such a multi-beam antenna system, each transceiver 120 corresponds to a radio frequency (RF) channel, and each RF channel must satisfy a defined amplitude and phase relationship. If the amplitude and phase of the RF channel signal deviate, it will cause beam pattern distortion or the beam cannot be aligned with the target, resulting in a decrease in the system's signal-to-noise ratio, gain, and communication quality. Furthermore, as... Figure 2 As shown, in the quantum computing device 200, multiple coherent microwave signals output by multiple signal generation circuits 210 are also required to manipulate the qubits of the quantum processor 220. In this case, amplitude and phase deviations in the multiple coherent microwave signals directly affect the overall system performance, leading to a deterioration in fidelity. The main reason for amplitude and phase errors in the signal output from the radio frequency (RF) channel is the change in transistor parameters caused by ambient temperature variations, resulting in instability at the static operating point and unstable dynamic circuit parameters, thus causing changes in the amplitude and phase of the signal output from the RF channel. Therefore, multi-channel calibration technology is needed to track the temperature drift of the RF channel and achieve amplitude and phase consistency calibration, i.e., amplitude-phase calibration.

[0045] To achieve amplitude and phase calibration of RF channels, it is necessary to detect the phase and amplitude differences of the output signals between RF channels. One related technique employs multi-channel power combining detection to assess the synchronization effect of multiple RF channels. For example... Figure 3As shown, in a multi-channel calibration circuit 300, multiple transceivers 320 are connected to signal input / output ports RFin / RFout via a first signal distribution circuit 310. Simultaneously, these multiple transceivers 320 are connected to an antenna 340 via a second signal distribution circuit 330. The first signal distribution circuit 310 can be composed of multiple cascaded power dividers to distribute the signal output from the signal input / output ports RFin / RFout to each transceiver 320, or to combine the signals received by each transceiver 320 and output them from the signal input / output ports RFin / RFout. The second signal distribution circuit 330 can also be composed of multiple cascaded power dividers to combine the signals output from each RF channel and output them to the antenna 340, or to distribute the signal received by the antenna 340 to each transceiver 320. Each transceiver 320 includes a first gating switch S1, a second gating switch S2, a receiving channel, and a transmitting channel. The receiving channel typically includes cascaded variable gain amplifiers, phase shifters, low-noise amplifiers, low-pass filters, and other devices. The transmitting channel typically includes power amplifiers, phase shifters, variable gain amplifiers, and other devices. The first end of both the receiving and transmitting channels is connected to the power divider terminal of a corresponding power divider in the first signal distribution circuit 310 via a first gating switch S1. The second end of both the receiving and transmitting channels is connected to the power divider terminal of a corresponding power divider in the second signal distribution circuit 330 via a second gating switch S2. By controlling the first gating switch S1 and the second gating switch S2, the transmitted signal can be processed through the transmitting channel during transmission, and the received signal can be processed through the receiving channel during reception.

[0046] In addition, to calibrate the phase and amplitude of multiple RF channels, the multi-channel calibration circuit 300 further includes a first power detector 350, a second power detector 370, a first register 360, a second register 380, and a controller 390. The first power detector 350 is connected to the combining terminal of the first signal distribution circuit 310 and is used to detect the power of the received signal. The first register 360 is connected to the first power detector 350 and is used to store the maximum power of the received signal. The second power detector 370 is connected to the combining terminal of the second signal distribution circuit 330 and is used to detect the power of the transmitted signal. The second register 380 is connected to the second power detector 370 and is used to store the maximum power of the transmitted signal. The controller 390 is connected to the first register 360 and the second register 380 respectively, and is used to adjust the phase of the phase shifter in the corresponding transmit channel according to the maximum power of the transmitted signal output by each transceiver during the calibration process, or to adjust the phase of the phase shifter in the corresponding receive channel according to the maximum power of the received signal received by each transceiver 320.

[0047] Using the above method, the maximum power of the combined, fully synchronized signals can be used as a benchmark. Calibration is completed by adjusting the phase of each RF channel to the maximum power. However, the power detector in this scheme is susceptible to temperature drift, which increases the amplitude and phase errors during calibration.

[0048] In another related technology, the amplitude and phase of multiple radio frequency channels can be calibrated using the transmit signal output from the radio frequency channel and an external calibration signal. For example... Figure 4 As shown, in a multi-channel calibration circuit 400, the input terminals of multiple transmission channels 410 are connected to the radio frequency signal input terminal RFin, and the output terminals of the multiple transmission channels 410 are connected to the corresponding antennas 430 through an output matching network 420. Simultaneously, the output terminals of each transmission channel in the output matching network 420 are connected to a down-conversion module 450 through a first multiplexer 440. This down-conversion module 450 is connected to the first selection terminal of a second multiplexer 470 through an amplitude and phase detection module 460. Furthermore, the second selection terminal of the second multiplexer 470 is connected to the external calibration signal input terminal Ref. The common terminal of the second multiplexer 470 is connected to a controller 480, and the controller 480 is also connected to each transmission channel through a register module 490. The transmission signals of each transmission channel can be selected by the first multiplexer 440 and then down-converted by the down-conversion module 450 to obtain an intermediate frequency (IF) signal. This IF signal can be processed by the amplitude and phase detection module 460 and compared with the external calibration signal for amplitude and phase information. Finally, the controller 480 stores the control signals of the phase shifter, variable gain amplifier, etc. in the transmission channel into the corresponding registers in the register module 490 based on the comparison results, thereby adjusting the amplitude and phase of the transmission signal of the corresponding transmission channel. However, in this scheme, the input of the frequency conversion module and the external calibration signal are affected by temperature, resulting in a large error when calibrating the amplitude and phase of the transmission channel.

[0049] In another related technology, the amplitude and phase of the output signals of multiple radio frequency channels can be calibrated by adjusting the frequency sources corresponding to each radio frequency channel. For example, Figure 5As shown, the frequency source 500 typically includes a crystal oscillator 510 and multiple phase-locked loops (PLLs) 520. The input of each PLL 520 is connected to the crystal oscillator 510, and the output of each PLL 520 is connected to its corresponding radio frequency (RF) channel. The output of each PLL 520 is also connected to a corresponding phase detection module 530, which can be connected to a controller 540. The phase detection module 530 detects the phase of the output signal of each PLL and sends the detected phase information to the controller 540. The controller 540 can control the phase of the output signal of the corresponding PLL 520 based on this phase detection information. Each PLL 520 typically includes a phase detector, a loop filter, a voltage-controlled oscillator (VCO), and a frequency divider. The phase detector compares the phase difference between the input signal and the feedback signal and outputs an error signal. The loop filter removes high-frequency components from the error signal to obtain a stable control voltage. The VCO adjusts the frequency and phase of the output signal according to changes in the control voltage. The frequency divider is used to divide the output signal and provide it to the phase comparator for phase comparison. The controller 540 compares the output signals of each phase-locked loop 520 with a synchronization signal Ref0, and controls the voltage-controlled oscillator and frequency divider in the corresponding phase-locked loop 520 based on the comparison result, thereby achieving calibration of multiple RF channels. However, this method requires an externally input synchronization signal Ref0, and the phase detection module 530 is susceptible to temperature fluctuations, resulting in errors remaining in the calibrated signal.

[0050] To solve the above problems, such as Figure 6 As shown, this application embodiment provides a multi-channel amplitude and phase detection device 600, which includes a first power divider 610, a first coupler 620, a second power divider 630, a second coupler 640, a first multiplexer 650, a second multiplexer 660, a quadrature frequency converter circuit 670, and a local oscillator 680.

[0051] The input terminal of the first coupler 620 is used to connect to the first radio frequency channel, and the input terminal of the second coupler 640 is used to connect to the second radio frequency channel.

[0052] The common terminal of the first power divider 610 is connected to the coupling terminal of the first coupler 620, the first output terminal of the first power divider 610 is connected to the first selection terminal of the first multiplexer 650, and the second output terminal of the first power divider 610 is connected to the first selection terminal of the second multiplexer 660.

[0053] The common terminal of the second power divider 630 is connected to the coupling terminal of the second coupler 640. The first output terminal of the second power divider 630 is connected to the second selection terminal of the first multiplexer 650, and the second output terminal of the second power divider 630 is connected to the second selection terminal of the second multiplexer 660. The first RF input terminal of the quadrature frequency converter circuit 670 is connected to the common terminal of the first multiplexer 650, and the second RF input terminal of the quadrature frequency converter circuit 670 is connected to the common terminal of the second multiplexer 660. The local oscillator 680 is connected to the local oscillator input terminal of the quadrature frequency converter circuit 670. The quadrature frequency converter circuit 670 is used to output an output signal containing the main frequency signal and the mirror signal from the output terminal OUT according to the signals input from the first RF input terminal IN1 and the second RF input terminal IN2. The first power divider 610 and the second power divider 630 can be equal-power power dividers.

[0054] Through the multi-channel amplitude and phase detection device 600 described above, the output signal of the first radio frequency channel can be transmitted to the corresponding antenna for use through the through-hole terminal OUT1 of the first coupler 620. Simultaneously, a first coupled signal containing the amplitude and phase information of the first radio frequency channel is transmitted to the first power divider 610 through the coupling terminal of the first coupler 620. The first power divider 610 can equally divide the first coupled signal to the first multiplexer 650 and the second multiplexer 660. Similarly, the output signal of the second radio frequency channel can be transmitted to the corresponding antenna for use through the through-hole terminal OUT2 of the second coupler 640. Simultaneously, a second coupled signal containing the amplitude and phase information of the second radio frequency channel is transmitted to the second power divider 630 through the coupling terminal of the second coupler 640. The second power divider 630 can equally divide the second coupled signal to the first multiplexer 650 and the second multiplexer 660.

[0055] Furthermore, by controlling the first multiplexer 650 and the second multiplexer 660, a signal output from the first power divider 610 and a signal output from the second power divider 630 can be input into the quadrature frequency converter circuit 670. When there is an amplitude and phase imbalance between the two signals input to the two RF input terminals of the quadrature frequency converter circuit 670, a mirror frequency signal is generated. The amplitude and phase differences between this mirror frequency signal and the main frequency signal output by the quadrature frequency converter circuit 670 are related to the amplitude and phase differences between the two signals input to the two RF input terminals (i.e., IN1 and IN2). Therefore, by obtaining the phase and amplitude differences between the main frequency signal and the mirror frequency signal output by the quadrature frequency converter circuit 670, the amplitude and phase differences between the RF channels can be determined simultaneously. Based on this, this embodiment of the application selects a quadrature frequency converter circuit 670 whose output signal can include both the main frequency signal and the mirror frequency signal. After the two RF input terminals of the quadrature frequency converter circuit 670 receive signals, it can output an output signal containing both the main frequency signal and the mirror frequency signal based on the two input signals.

[0056] Furthermore, when temperature drift occurs in various components due to temperature changes, the output power of the quadrature frequency converter circuit 670 will shift. However, the output power of the main frequency signal and the image frequency signal output by the quadrature frequency converter circuit 670 will shift together, i.e., they will increase or decrease simultaneously, but the difference between them will not change. Therefore, the calculated amplitude difference and phase difference will not change. Thus, when performing amplitude and phase calibration on multiple RF channels, the detection signals between RF channels obtained by the aforementioned multi-channel amplitude and phase detection device 600 have excellent anti-temperature drift performance, which can avoid the influence of temperature drift on the detection results of the phase difference and amplitude difference of the output signals between RF channels, thereby improving calibration accuracy.

[0057] In the above implementation process, the multi-channel amplitude and phase detection device 600 can be an independent chip or part of a system on chip (SoC). This application embodiment does not impose specific limitations on this.

[0058] In one implementation, it remains as follows Figure 6 As shown, the multi-channel amplitude and phase detection device 600 further includes a spectrum detection module 690 connected to the output terminal of the quadrature frequency converter circuit 670. The spectrum detection module 690 can generate a corresponding spectrum based on the detection signal output by the quadrature frequency converter circuit 670. This spectrum includes the center frequency and amplitude of the output signal, the frequency and amplitude of the main frequency signal, and the frequency and amplitude of the image frequency signal. The amplitude difference and phase difference between the main frequency signal and the image frequency signal can be calculated from the spectrum, allowing for amplitude and phase calibration of the first and second radio frequency channels based on these differences, so that radio frequency signals with the same amplitude and phase can be output through the first and second radio frequency channels.

[0059] In the above implementation process, the spectrum detection module 690 can be implemented using an analog-to-digital converter (ADC). An ADC is also known as an A / D converter. When the multi-channel amplitude and phase detection device 600 is part of a chip or SoC, the spectrum detection module 690 can be an on-chip device. Based on this, the spectrum of the detection signal output by the quadrature frequency converter circuit 670 can be obtained more conveniently and quickly. Of course, the spectrum detection module 690 can also be an off-chip device. For example, the spectrum detection module 690 can also be implemented using an external spectrum analyzer.

[0060] In one implementation, such as Figure 7As shown, the quadrature frequency converter circuit 670 provided in this embodiment includes: a first phase shifter 671, a second phase shifter 672, a first mixer 673, a second mixer 674, a third power divider 675, and a combiner 676. The first input terminal of the first mixer is connected to the common terminal of the first multiplexer 650 via the first phase shifter 671, and the second input terminal of the first mixer 673 is connected to the first output terminal of the third power divider 675. The first input terminal of the second mixer 674 is connected to the common terminal of the second multiplexer 660, and the second input terminal of the second mixer 674 is connected to the second output terminal of the third power divider 675 via the second phase shifter 672. The input terminal of the third power divider 675 is connected to the local oscillator 680. The first input terminal of the combiner 676 is connected to the output terminal of the first mixer 673, and the second input terminal of the combiner 676 is connected to the output terminal of the second mixer 674. In the above manner, the output signal of the quadrature frequency converter circuit 670 can include both the main frequency signal and the mirror frequency signal. At this time, the spectrum corresponding to the output signal of the quadrature frequency converter circuit 670 is as follows: Figure 8 As shown. In Figure 8 The horizontal axis represents frequency, and the vertical axis represents amplitude. The sideband suppression ratio is calculated as shown in formula (1).

[0061]

[0062] Where S represents the sideband rejection ratio; G represents the amplitude difference between the main frequency signal and the image frequency signal; This represents the phase difference between the main frequency signal and the image frequency signal. Figure 8 In this diagram, the master frequency signal and the mirror frequency signal are symmetrically distributed on both sides of the RF signal output from the RF channel. The master frequency signal has a higher frequency than the RF signal output from the RF channel, while the mirror frequency signal has a lower frequency. The ratio of the master frequency signal to the mirror frequency signal is the sideband rejection ratio (SCR). The mapping curves between the amplitude difference and phase difference between the master frequency signal and the mirror frequency signal and the SCR are shown below. Figure 9 As shown. From Figure 9 It can be seen that the greater the amplitude difference and phase difference between the main frequency signal and the image frequency signal, the greater the sideband suppression ratio.

[0063] In another implementation, such as Figure 10As shown, the quadrature frequency converter circuit 670 provided in this embodiment includes: a first phase shifter 671, a second phase shifter 672, a first mixer 673, a second mixer 674, a third power divider 675, and a combiner 676. The first input terminal of the first mixer 673 is connected to the common terminal of the first multiplexer 650, and the second input terminal of the first mixer 673 is connected to the first output terminal of the third power divider 675. The first input terminal of the second mixer 674 is connected to the common terminal of the second multiplexer 660 through the first phase shifter 671, and the second input terminal of the second mixer 674 is connected to the second output terminal of the third power divider 675 through the second phase shifter 672. The first input terminal of the combiner 676 is connected to the output terminal of the first mixer 673, and the second input terminal of the combiner 676 is connected to the output terminal of the second mixer 674. Among them, the first phase shifter 671 and the second phase shifter 672 mentioned above can be phase shifters with a 90° angle.

[0064] In this way, the output signal of the quadrature frequency converter circuit 670 can also include both the main frequency signal and the mirror frequency signal. In this case, the spectrum corresponding to the output signal of the quadrature frequency converter circuit 670 is as follows: Figure 11 As shown. In Figure 11 In this configuration, the master frequency signal and the mirror frequency signal are symmetrically distributed on both sides of the RF signal output from the RF channel. The master frequency signal has a lower frequency than the RF signal output from the RF channel, while the mirror frequency signal has a higher frequency than the RF signal output from the RF channel. Furthermore, the amplitude of the master frequency signal is greater than the amplitude of the mirror frequency signal.

[0065] Both of the above-described quadrature frequency converter circuits 670 can ensure that the output signal includes both the main frequency signal and the image frequency signal. Different phase shifter layouts only change the relative positions of the output main frequency signal and the image frequency signal. Furthermore, the above-described quadrature frequency converter circuits 670 are merely exemplary embodiments provided in this application. In specific implementations, the quadrature frequency converter circuit 670 can also be adaptively adjusted according to actual needs, and this application does not impose specific limitations in this regard. The first phase shifter 671 and the second phase shifter 672 can also be other types of phase shifters, and this application does not impose specific limitations in this regard.

[0066] In one possible implementation, such as Figure 12 As shown, in Figure 6Based on this, the multi-channel amplitude and phase detection device 600 further includes a fourth power divider 1220 and a third coupler 1210. The input terminal of the third coupler 1210 is used to connect to the third radio frequency channel, and the output signal of the third radio frequency channel can be transmitted to the corresponding antenna for use through the through-hole terminal OUT3 of the third coupler 1210. The common terminal of the fourth power divider 1220 is connected to the coupling terminal of the third coupler 1210, the first output terminal of the fourth power divider 1220 is connected to the third selection terminal of the first multiplexer 650, and the second output terminal of the fourth power divider 1220 is connected to the third selection terminal of the second multiplexer 660.

[0067] The above method allows for the detection of amplitude and phase differences between the output signals of multiple RF channels, facilitating amplitude and phase calibration of more RF channels. Of course, the aforementioned multi-channel amplitude and phase detection device 600 can also be referenced. Figure 11 The methods can be further expanded, but the embodiments in this application will not be described in detail here.

[0068] In one possible implementation, such as Figure 13 As shown, this application embodiment also provides an electronic device 1300, which includes a first radio frequency channel 1310, a second radio frequency channel 1320, the aforementioned multi-channel amplitude and phase detection device 600 connected to the first radio frequency channel 1310 and the second radio frequency channel 1320, a controller 1330 connected to the multi-channel amplitude and phase detection device 600, and a frequency source 1340 connected to the controller 1330.

[0069] The frequency source 1340 is also connected to the first RF channel 1310 and the second RF channel 1320 to adjust the amplitude and phase of the signals output by the first RF channel 1310 and the second RF channel 1320. The controller 1330 controls the first multiplexer 650 to connect the first input terminal of the first power divider 610 to the first RF input terminal of the quadrature frequency converter circuit 670, and controls the second multiplexer 660 to connect the second input terminal of the second power divider 630 to the second RF input terminal of the quadrature frequency converter circuit 670, so as to obtain a first detection signal between the first RF channel 1310 and the second RF channel 1320.

[0070] Additionally, the controller 1340 is also used to control the frequency source to perform amplitude and phase calibration on the first RF channel 1310 and the second RF channel 1320 based on the first detection signal. Specifically, the signal output from one of the RF channels 1310 and 1320 can be used as a reference signal to perform self-calibration on the multi-channel amplitude and phase detection device 600. Then, the signal output from the other RF channel is selected and used to perform amplitude and phase calibration with the aforementioned reference signal. During amplitude and phase calibration, the sideband rejection ratio (SCR) of the first detection signal output from the quadrature converter module can be measured first to determine if it meets the accuracy requirements. If it does, the RF channel to be calibrated does not need calibration. If it does not meet the accuracy requirements, the amplitude and phase of the signal output from the RF channel to be calibrated are adjusted sequentially until the SCR is optimal. If the accuracy requirements are still not met, the above steps are repeated until the accuracy requirements are met.

[0071] In the above implementation process, the electronic device 1300 can be a radar device, a quantum computing device, or other device that needs to output multi-channel coherent microwave signals. The frequency source 1340 can include at least one of the following devices: an adjustable attenuator, a voltage-controlled oscillator, a phase shifter, a direct digital frequency synthesizer, and a variable gain amplifier. This application embodiment does not impose specific limitations on this. In addition, when the radio frequency channel includes devices such as a phase shifter, an adjustable attenuator, and a variable gain amplifier that can adjust the phase and amplitude of the signal, the corresponding devices in the radio frequency channel can also be directly adjusted by the controller 1330 to achieve amplitude and phase calibration between radio frequency channels.

[0072] In the above manner, the detection signal between the first RF channel 1310 and the second RF channel 1320 can be obtained, so that the amplitude and phase of the first RF channel 1310 and the second RF channel 1320 can be calibrated according to the detection signal, so that the first RF channel 1310 and the second RF channel 1320 output RF signals with the same amplitude and the same phase.

[0073] In the above implementation process, the controller 1330 can be a chip. For example, it can be a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system-on-chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a micro controller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0074] In one possible implementation, because the phase shifters and other components in the quadrature frequency converter circuit 670 may have inherent errors, the controller 1330 can also control the first multiplexer 650 to connect the first input terminal of the first power divider 610 to the first RF input terminal of the quadrature frequency converter circuit 670, and control the first multiplexer 650 to connect the second input terminal of the first power divider 610 to the second RF input terminal of the quadrature frequency converter circuit 670, to obtain the second detection signal of the first RF channel. Then, the multi-channel amplitude and phase detection device 600 is calibrated based on the second detection signal.

[0075] In this way, the two RF input terminals of the quadrature frequency converter circuit 670 can be input with the coupling signal corresponding to the output signal of the same RF channel, which makes it easier to calibrate the quadrature frequency converter circuit 670 according to the detection signal output by the quadrature frequency converter circuit 670, thereby reducing the error when calibrating the amplitude and phase of multiple RF channels.

[0076] In one possible implementation, such as Figure 14 As shown in the embodiments of this application, a multi-channel amplitude and phase detection method is also provided for application in the above-mentioned multi-channel amplitude and phase detection device 600. This multi-channel amplitude and phase detection method can be executed by a controller. Specifically, the execution process of this multi-channel amplitude and phase detection method during amplitude and phase calibration of the first and second radio frequency channels is as follows.

[0077] S1401: The controller controls the first multiplexer to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature frequency converter circuit, and controls the second multiplexer to connect the second input terminal of the first power divider to the second radio frequency input terminal of the quadrature frequency converter circuit, so as to obtain the second detection signal.

[0078] In this case, considering that the errors of components such as the phase shifter in the quadrature frequency converter circuit 670 will affect the amplitude and phase calibration effect of the RF channel, the signals output from both output terminals of the first power divider 610 can be input into the quadrature frequency converter circuit 670 by controlling the first multiplexer 650 and the second multiplexer 660. Because the first power divider 610 divides the signal output from the coupling terminal of the first coupler 620 into two equal paths, the amplitude and phase differences between the branches corresponding to the two RF input terminals in the quadrature frequency converter circuit 670 can be seen from the spectrum of the second detection signal output by the quadrature frequency converter circuit 670.

[0079] S1402: The controller calibrates the multi-channel amplitude and phase detection device based on the second detection signal.

[0080] The amplitude and phase differences between the branches corresponding to the two RF input terminals in the quadrature frequency converter circuit 670 can be observed from the spectrum of the second detection signal. Therefore, the controller can calibrate the multi-channel amplitude and phase detection device 600 based on the amplitude and phase differences between the image frequency signal and the main frequency signal in the spectrum of the second detection signal.

[0081] S1403: The controller controls the first multiplexer to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature frequency converter circuit, and controls the second multiplexer to connect the second input terminal of the second power divider to the second radio frequency input terminal of the quadrature frequency converter circuit, so as to obtain the first detection signal.

[0082] In this process, after the multi-channel amplitude and phase detection device 600 is calibrated, the first radio frequency channel can be used as the reference channel. Then, the first detection signal between the first radio frequency channel and the second radio frequency channel is obtained by controlling the first multiplexer 650 and the second multiplexer 660.

[0083] S1404: The controller controls the frequency source to perform amplitude and phase calibration on the first radio frequency channel and the second radio frequency channel according to the first detection signal.

[0084] The controller can calculate the corresponding sideband rejection ratio based on the amplitude difference and phase difference between the main frequency signal and the image frequency signal in the first detection signal, referring to formula (1). Then, the controller adjusts the signal output from the frequency source to the first RF channel and the second RF channel according to the sideband rejection ratio, so that the first RF channel and the second RF channel output RF signals with the same amplitude and the same phase.

[0085] In one possible implementation, such as Figure 15As shown, when calibrating multiple RF channels, the quadrature frequency converter circuit 670 can be self-calibrated first. Next, after self-calibrating the quadrature frequency converter circuit 670, the channel to be calibrated is selected via the first multiplexer 650 and the second multiplexer 660 according to actual needs. Then, the sideband rejection ratio (SCR) of the output signal of the quadrature frequency converter circuit 670 is determined based on the amplitude and phase differences between the main frequency signal and the image frequency signal in the detection signal output by the quadrature frequency converter circuit 670. Next, this SCR is compared with a preset SCR to determine if the accuracy requirements are met. If the SCR meets the accuracy requirements, there is no need to calibrate the RF channel to be calibrated, and further analysis can be performed to determine if amplitude and phase calibration of all RF channels has been completed. If amplitude and phase calibration of all RF channels has been completed, the calibration process is complete. If amplitude and phase calibration of all RF channels has not been completed, the above process can be repeated. If the SCR does not meet the accuracy requirements, the amplitude and phase of the signal output by the channel to be calibrated are adjusted to achieve the optimal SCR. If the accuracy requirement is still not met at this point, repeat the above steps until the requirement is met.

[0086] In one possible implementation, this application also provides a computer-readable storage medium that can store computer program instructions. When executed by a processor, these computer program instructions can implement the aforementioned multi-channel amplitude and phase detection method. The computer-readable storage medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0087] In one possible implementation, this application also provides a computer program product that, when executed by a processor, can implement the above-described multi-channel amplitude and phase detection method.

[0088] In the embodiments provided in this application, it should be understood that the disclosed systems, circuits, and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of circuits and modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between devices or modules, and may be electrical, mechanical, or other forms.

[0089] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located on one device or distributed across multiple devices. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0090] In addition, the functional modules in the various embodiments of this application can be integrated into one device, or each module can exist physically separately, or two or more modules can be integrated into one device.

[0091] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multi-channel amplitude and phase detection device, characterized in that, include: First power divider, first coupler, second power divider, second coupler, first multiplexer, second multiplexer, quadrature frequency converter circuit and local oscillator; The input terminal of the first coupler is used to connect to the first radio frequency channel; the input terminal of the second coupler is used to connect to the second radio frequency channel. The common terminal of the first power divider is connected to the coupling terminal of the first coupler; the first output terminal of the first power divider is connected to the first selection terminal of the first multiplexer; the second output terminal of the first power divider is connected to the first selection terminal of the second multiplexer. The common terminal of the second power divider is connected to the coupling terminal of the second coupler; the first output terminal of the second power divider is connected to the second selection terminal of the first multiplexer; the second output terminal of the second power divider is connected to the second selection terminal of the second multiplexer. The first radio frequency input terminal of the quadrature frequency converter circuit is connected to the common terminal of the first multiplexer; the second radio frequency input terminal of the quadrature frequency converter circuit is connected to the common terminal of the second multiplexer; the local oscillator input terminal of the quadrature frequency converter circuit is connected to the local oscillator source. The quadrature frequency converter circuit is used to output an output signal containing a main frequency signal and a mirror frequency signal based on the signals input from the first RF input terminal and the second RF input terminal.

2. The multi-channel amplitude and phase detection device according to claim 1, characterized in that, The multi-channel amplitude and phase detection device further includes a spectrum detection module; the spectrum detection module is connected to the output terminal of the quadrature frequency conversion circuit. The spectrum detection module is used to generate a corresponding spectrum based on the detection signal output by the quadrature frequency converter circuit.

3. The multi-channel amplitude and phase detection device according to claim 1 or 2, characterized in that, The quadrature frequency converter circuit includes: a first phase shifter, a second phase shifter, a first mixer, a second mixer, a third power divider, and a combiner; The first input terminal of the first mixer is connected to the common terminal of the first multiplexer through the first phase shifter; the second input terminal of the first mixer is connected to the first output terminal of the third power divider. The first input terminal of the second mixer is connected to the common terminal of the second multiplexer; the second input terminal of the second mixer is connected to the second output terminal of the third power divider through the second phase shifter; the input terminal of the third power divider is connected to the local oscillator. The first input terminal of the combiner is connected to the output terminal of the first mixer; the second input terminal of the combiner is connected to the output terminal of the second mixer.

4. The multi-channel amplitude and phase detection device according to claim 1 or 2, characterized in that, The quadrature frequency converter circuit includes: a first phase shifter, a second phase shifter, a first mixer, a second mixer, a third power divider, and a combiner; The first input terminal of the first mixer is connected to the common terminal of the first multiplexer; the second input terminal of the first mixer is connected to the first output terminal of the third power divider. The first input terminal of the second mixer is connected to the common terminal of the second multiplexer through the first phase shifter; the second input terminal of the second mixer is connected to the second output terminal of the third power divider through the second phase shifter. The first input terminal of the combiner is connected to the output terminal of the first mixer; the second input terminal of the combiner is connected to the output terminal of the second mixer.

5. The multi-channel amplitude and phase detection device according to any one of claims 1-4, characterized in that, Also includes: A fourth power divider and a third coupler; the input of the third coupler is used to connect to a third radio frequency channel; The common terminal of the fourth power divider is connected to the coupling terminal of the third coupler; The first output terminal of the fourth power divider is connected to the third selection terminal of the first multiplexer; the second output terminal of the fourth power divider is connected to the third selection terminal of the second multiplexer.

6. A multi-channel amplitude and phase detection method, characterized in that, This invention relates to a multi-channel amplitude and phase detection device, comprising a first power divider, a first coupler, a second power divider, a second coupler, a first multiplexer, a second multiplexer, a quadrature frequency converter circuit, and a local oscillator. The input terminal of the first coupler is connected to a first radio frequency (RF) channel; the input terminal of the second coupler is connected to a second RF channel; the common terminal of the first power divider is connected to the coupling terminal of the first coupler; the first output terminal of the first power divider is connected to the first selection terminal of the first multiplexer; the second output terminal of the first power divider is connected to the first selection terminal of the second multiplexer; the common terminal of the second power divider is connected to the coupling terminal of the second coupler; the first output terminal of the second power divider is connected to the second selection terminal of the first multiplexer; the second output terminal of the second power divider is connected to the second selection terminal of the second multiplexer; the first RF input terminal of the quadrature frequency converter circuit is connected to the common terminal of the first multiplexer; the second RF input terminal of the quadrature frequency converter circuit is connected to the common terminal of the second multiplexer; and the local oscillator is connected to the local oscillator input terminal of the quadrature frequency converter circuit. The method includes: When performing amplitude and phase calibration on the first RF channel and the second RF channel, the first multiplexer is controlled to connect the first input terminal of the first power divider to the first RF input terminal of the quadrature frequency converter circuit, and the second multiplexer is controlled to connect the second input terminal of the second power divider to the second RF input terminal of the quadrature frequency converter circuit, so as to obtain a first detection signal between the first RF channel and the second RF channel; the first detection signal includes a first image frequency signal and a first main frequency signal.

7. The method according to claim 6, characterized in that, The method further includes: When performing amplitude and phase calibration on the first RF channel and the second RF channel, the first multiplexer is controlled to connect the first input terminal of the first power divider to the first RF input terminal of the quadrature frequency converter circuit, and the first multiplexer is controlled to connect the second input terminal of the first power divider to the second RF input terminal of the quadrature frequency converter circuit, so as to obtain the second detection signal of the first RF channel; the second detection signal includes a second image frequency signal and a second main frequency signal.

8. The method according to claim 6 or 7, characterized in that, The multi-channel amplitude and phase detection device further includes: a spectrum detection module; the spectrum detection module is connected to the output terminal of the quadrature frequency conversion circuit; the method further includes: The spectrum corresponding to the first detection signal is generated by the spectrum detection module.

9. An electronic device, characterized in that, include: First radio frequency channel, second radio frequency channel; The multi-channel amplitude and phase detection device as described in any one of claims 1-5 is connected to the first radio frequency channel and the second radio frequency channel; the controller is connected to the multi-channel amplitude and phase detection device; and the frequency source is connected to the controller; the frequency source is also connected to the first radio frequency channel and the second radio frequency channel. The controller is configured to control the first multiplexer to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature frequency converter circuit, and to control the second multiplexer to connect the second input terminal of the second power divider to the second radio frequency input terminal of the quadrature frequency converter circuit, so as to obtain a first detection signal between the first radio frequency channel and the second radio frequency channel; The controller is further configured to control the frequency source to perform amplitude and phase calibration on the first radio frequency channel and the second radio frequency channel based on the first detection signal.

10. The electronic device according to claim 9, characterized in that, The controller is also used for: The first multiplexer is controlled to connect the first input terminal of the first power divider to the first radio frequency input terminal of the quadrature frequency converter circuit, and the second multiplexer is controlled to connect the second input terminal of the first power divider to the second radio frequency input terminal of the quadrature frequency converter circuit, so as to obtain the second detection signal of the first radio frequency channel; The multi-channel amplitude and phase detection device is calibrated based on the second detection signal.

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