Antenna testing apparatus and communication module

Abstract

The embodiment of the application provides an antenna testing device and a communication module, the antenna testing device comprises a processing unit, a transceiver, a radio frequency front-end circuit, an antenna and a detection circuit; the output end of the processing unit is connected with the first end of the transceiver, the second end of the transceiver is connected with the first end of the radio frequency front-end circuit, the second end of the radio frequency front-end circuit is connected with the first end of the antenna, the second end of the antenna is connected with the detection end of the detection circuit, and the output end of the detection circuit is connected with the feedback receiving end of the transceiver; the processing unit receives a signal output instruction, and outputs a first signal according to the signal output instruction; the first signal is transmitted to the antenna after being processed by the transceiver and the radio frequency front-end circuit; in the case that the processing unit outputs the first signal and the feedback receiving end of the transceiver does not receive the first feedback signal output by the output end of the detection circuit, it is determined that the antenna is abnormal.

Description

Technical Field

[0001] This application relates to the field of antenna technology, specifically to an antenna testing device and a communication module. Background Technology

[0002] A radio frequency (RF) module is an integrated module that includes an antenna. It uses the antenna to receive or transmit RF signals to enable wireless communication between different devices. Traditional RF module connectivity tests typically only assess the connectivity of the RF front-end signal. When testing antenna connectivity, the presence of numerous RF signals emitted by other RF modules in the air makes it impossible to determine if the received signal originated from the antenna of the RF module under test, thus hindering the determination of the antenna's connectivity. A malfunctioning antenna in this RF module can render the entire module unusable.

[0003] Therefore, a feasible solution is urgently needed to test the connectivity of the antennas on the RF module and ensure the availability of the RF module. Utility Model Content

[0004] This application provides an antenna testing device to determine antenna malfunctions within the device.

[0005] A first aspect of this application provides an antenna testing apparatus, comprising:

[0006] Processing unit, transceiver, RF front-end circuit, antenna, detection circuit;

[0007] The output terminal of the processing unit is connected to the first terminal of the transceiver, the second terminal of the transceiver is connected to the first terminal of the radio frequency front-end circuit, the second terminal of the radio frequency front-end circuit is connected to the first terminal of the antenna, the second terminal of the antenna is connected to the detection terminal of the detection circuit, and the output terminal of the detection circuit is connected to the feedback receiving terminal of the transceiver.

[0008] The processing unit receives a signal output instruction and outputs a first signal according to the signal output instruction. The first signal is transmitted to the antenna after being processed by the transceiver and the radio frequency front-end circuit.

[0009] If the processing unit outputs the first signal and the transceiver's feedback receiving end does not receive the first feedback signal output by the detection circuit, then the antenna is determined to be abnormal.

[0010] Optionally, the detection circuit includes: a switching unit and a connection unit;

[0011] The first end of the connection unit is connected to the second end of the antenna, the second end of the connection unit is connected to the first end of the switch unit, and the second end of the switch unit is connected to the feedback receiving end of the transceiver.

[0012] When the first end of the connection unit detects the first feedback signal at the second end of the antenna, the connection unit transmits the first feedback signal to the first end of the switching unit; when the first end of the switching unit and the second end of the switching unit are connected, the first feedback signal is transmitted to the feedback receiving end of the transceiver.

[0013] Optionally, the connection unit is a transmission line that can be used to transmit radio frequency signals.

[0014] Optionally, the connection unit is a microstrip line.

[0015] Optionally, the switching unit further includes: a third terminal and a fourth terminal;

[0016] The antenna testing device also includes: an intermediate frequency tuning circuit and a low frequency tuning circuit;

[0017] The third terminal of the switching unit is connected to the first terminal of the intermediate frequency (IF) tuning circuit, the second terminal of the IF tuning circuit is connected to the third terminal of the radio frequency (RF) front-end circuit, and the third terminal of the IF tuning circuit is connected to the third terminal of the antenna.

[0018] The fourth terminal of the switching unit is connected to the first terminal of the low-frequency tuning circuit, the second terminal of the low-frequency tuning circuit is connected to the fourth terminal of the radio frequency front-end circuit, and the third terminal of the low-frequency tuning circuit is connected to the fourth terminal of the antenna.

[0019] When the antenna receives a second signal that is an intermediate frequency signal, and the first terminal of the switching unit is connected to the third terminal of the switching unit, the second feedback signal detected by the first terminal of the connection unit is transmitted to the first terminal of the intermediate frequency tuning circuit. The second signal received by the antenna is transmitted to the processing unit after passing through the intermediate frequency tuning circuit, the radio frequency front-end circuit, and the transceiver.

[0020] When the antenna receives a third signal that is a low-frequency signal, and the first segment of the switching unit is connected to the fourth terminal of the switching unit, the third feedback signal detected by the first terminal of the connection unit is transmitted to the feedback receiving terminal of the low-frequency tuning circuit. The third signal received by the antenna is transmitted to the processing unit after passing through the low-frequency tuning circuit, the radio frequency front-end circuit, and the transceiver. Optionally, the switching unit is a switch capable of transmitting radio frequency signals.

[0021] Optionally, the switching unit is a radio frequency switch.

[0022] Optionally, the antenna testing device further includes a testing unit;

[0023] The output of the test unit is connected to the input of the processing unit;

[0024] The processing unit receives the signal output command from the output terminal of the test unit.

[0025] Optionally, if the processing unit outputs the first signal and the feedback receiving terminal of the transceiver receives the first feedback signal output by the output terminal of the detection circuit, then it is determined that the antenna is not abnormal.

[0026] A second aspect of this application provides a communication module, the communication module including the antenna testing device as described in the first aspect.

[0027] In this embodiment, when the processing unit in the antenna testing device receives a signal output command, it outputs a first signal according to the command. The first signal is then processed by the transceiver and the RF front-end circuit and transmitted to the first end of the antenna. If the processing unit outputs the first signal, but the feedback receiving end of the transceiver does not receive the first feedback signal output by the output end of the detection circuit, it indicates that the detection end of the detection circuit has not detected a signal at the second end of the antenna. However, the first end of the antenna receives the signal processed by the transceiver and the RF front-end circuit, indicating that the antenna is malfunctioning. This prevents the transmission of the signal received at the first end of the antenna, which in turn prevents the first end of the detection circuit from detecting the signal, and the feedback receiving end of the transceiver cannot receive the first feedback signal.

[0028] Through the above steps, the antenna testing device determines whether the antenna is abnormal based on whether the transceiver's feedback receiving end receives the first feedback signal. If the processing unit outputs the first signal and the transceiver's feedback receiving end does not receive the first feedback signal, it indicates that the antenna is abnormal, causing it to be unable to output the signal received at the first end of the antenna. Consequently, the first end of the detection circuit cannot detect the first feedback signal at the second end of the antenna, and the transceiver's feedback receiving end does not receive the first feedback signal. If the processing unit outputs the first signal and the transceiver's feedback receiving end receives the first feedback signal, it indicates that the antenna is not abnormal. This causes the antenna to output the signal received at the first end of the antenna, which in turn causes the detection circuit's detection end to detect the first feedback signal at the second end of the antenna, and the transceiver's feedback receiving end receives the first feedback signal detected by the detection circuit. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a conventional antenna testing device provided in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the structure of an antenna testing device provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of another antenna testing device provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the structure of another antenna testing device provided in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram of the structure of a communication module provided in an embodiment of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0037] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0038] Please see Figure 1 , Figure 1 This is a schematic diagram of a conventional antenna testing device provided in an embodiment of this application. The conventional antenna testing device includes a processing unit, a transceiver, an RF front-end circuit, a detection circuit, and an antenna. One end of the processing unit is connected to one end of the transceiver, the other end of the transceiver is connected to one end of the RF front-end circuit, the other end of the RF front-end circuit is connected to one end of the detection circuit and one end of the antenna, and the other end of the detection circuit is connected to the feedback receiving end of the transceiver.

[0039] The processing unit is used to output test signals. After being processed by the transceiver and RF front-end circuit, the test signals are transmitted to the detection circuit and antenna.

[0040] A transceiver is used to convert digital signals into analog signals or vice versa. The signal output by the processing unit is usually a digital signal, while the signal transmitted by the antenna is usually an analog signal. In order for the signal output by the processing unit to be transmitted by the antenna, the transceiver is needed to convert the test signal sent by the processing unit into an analog test signal.

[0041] The transceiver can also be used to receive feedback signals obtained from the detection circuit.

[0042] The radio frequency (RF) front-end circuit is used to amplify the power of RF signals so that the power amplification of the RF signals passing through the RF front-end circuit 30 meets functional requirements. It can also be used to filter frequencies other than a specific frequency to reduce noise interference.

[0043] After the processing unit outputs a test signal, if the transceiver receives the test signal processed by the transceiver and RF front-end circuit, as detected by the detection circuit, the circuit connection between the processing unit and the RF front-end circuit is normal. However, because there are numerous RF signals emitted by other RF modules in the air, the signal emitted by the antenna in the antenna testing device cannot be accurately received, thus making it impossible to determine the connectivity of the antenna in the antenna testing device. In cases where the antenna has a poor solder joint or is broken, the antenna testing device may be unable to transmit a signal.

[0044] Please see Figure 2 , Figure 2This is a schematic diagram of an antenna testing device provided in an embodiment of this application. The device includes a processing unit 10, a transceiver 20, an RF front-end circuit 30, an antenna 40, and a detection circuit 50. The processing unit 10 includes an output terminal 11, the transceiver 20 includes a first terminal 21, a second terminal 22, and a feedback receiving terminal 23, the RF front-end circuit 30 includes a first terminal 31 and a second terminal 32, the antenna 40 includes a first terminal 41 and a second terminal 42, and the detection circuit 50 includes a detection terminal 51 and an output terminal 52.

[0045] The output terminal 11 of the processing unit 10 is connected to the first terminal 21 of the transceiver 20, the second terminal 22 of the transceiver 20 is connected to the first terminal 31 of the radio frequency front-end circuit 30, the second terminal 32 of the radio frequency front-end circuit 30 is connected to the first terminal 41 of the antenna 40, the second terminal 42 of the antenna 40 is connected to the detection terminal 51 of the detection circuit 50, and the output terminal 52 of the detection circuit 50 is connected to the feedback receiving terminal 23 of the transceiver 20.

[0046] The processing unit 10 is used to receive signal output instructions. When the processing unit 10 receives the signal output instructions, it outputs a first signal from the output terminal 11 of the processing unit. The first signal is transmitted to the first terminal 41 of the antenna 40 after being processed by the transceiver 20 and the radio frequency front-end circuit 30.

[0047] The transceiver 20 is used to convert digital signals into analog signals or analog signals into digital signals, and is also used to receive the first feedback signal detected by the detection circuit 50 on the antenna 40. Optionally, if the first signal is a digital signal, the transceiver 20 receives the first signal output by the processor 10, converts the first signal into an analog signal to obtain a first processed signal, and outputs the first processed signal from the second terminal 22 of the transceiver 20. The first processed signal is then processed by the radio frequency front-end circuit 30 and transmitted to the antenna 40.

[0048] The radio frequency (RF) front-end circuit 30 can be used to amplify the power of RF signals to meet functional requirements. It can also be used to filter frequencies other than a specific frequency to reduce noise interference. Optionally, the RF front-end circuit 30 includes a power amplifier (PA) and filters; the PA amplifies the power of the RF signal, and the filters filter frequencies other than a specific frequency.

[0049] Optionally, the RF front-end circuit 30 includes a duplexer, which is used to filter frequencies other than a specific frequency and to transmit and receive RF signals, wherein the transmitted RF signals and the received RF signals do not interfere with each other.

[0050] Optionally, the RF front-end circuit 30 includes a mode switch for switching the operating mode of the RF front-end circuit to transmit mode or receive mode. For example, when the mode switch is in the first state, the RF front-end circuit is in transmit mode, and signals can be transmitted using the RF front-end circuit. When the mode switch is in the second state, the RF front-end circuit is in receive mode, and signals can be received using the RF front-end circuit.

[0051] Optionally, the RF front-end circuit 30 includes an antenna matching circuit, which is used to ensure impedance matching between the antenna and the RF front-end circuit, thereby improving the efficiency of the antenna radiating signal and increasing the signal transmission distance.

[0052] Optionally, the RF front-end circuit 30 includes an RF test circuit, which is used to test whether the signal obtained after processing the first signal emitted by the processing unit 10 meets the communication standard. For example, the RF test circuit tests whether the signal strength of the signal obtained after processing the first signal emitted by the processing unit 10 is greater than a first threshold.

[0053] Antenna 40 is used to transmit signals processed by RF front-end circuit 30, or to receive signals propagating in the air. For example, if a signal is received at the first end 41 of antenna 40, antenna 40 transmits the signal received at the first end 41. Alternatively, if antenna 40 receives a signal propagating in the air, the second end 32 of RF front-end circuit 30 can detect the signal at the first end 41 of antenna 40.

[0054] The detection circuit 50 is used to detect signals on the antenna 40. When the antenna 40 transmits or receives a signal, the detection terminal 51 of the detection circuit 50 can detect the signal at the second terminal 42 of the antenna 40. Specifically, when the antenna 40 receives a signal at its first terminal 41, the antenna 40 transmits the signal received at its first terminal 41, and the detection terminal 51 of the detection circuit 50 can detect this signal at the second terminal 42 of the antenna 40. When the antenna 40 receives a signal propagating in the air, the detection terminal 51 of the detection circuit 50 can detect this signal at the second terminal 42 of the antenna 40.

[0055] If the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal output from the output end 52 of the detection circuit 50, it indicates that the detection circuit 50 has not detected the first feedback signal on the antenna 40. Therefore, the detection circuit 50 cannot transmit the first feedback signal to the feedback receiving end 23 of the transceiver 20 through the output end 52.

[0056] When the processing unit 10 outputs a first signal, the first signal is transmitted to the first end 41 of the antenna 40 after being processed by the transceiver 20 and the radio frequency front-end circuit 30.

[0057] In summary, when the processing unit 10 outputs the first signal and the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal output by the output end 52 of the detection circuit 50, the first end 41 of the antenna 40 receives the first signal processed by the transceiver 20 and the RF front-end circuit 30, but the second end 42 of the antenna 40 cannot detect the signal, indicating that the antenna 40 is abnormal and cannot transmit the signal received by the first end of the antenna 40.

[0058] In this embodiment, when the processing unit 10 in the antenna testing device receives a signal output command, it outputs a first signal according to the signal output command. The first signal is transmitted to the first end 41 of the antenna 40 after being processed by the transceiver 20 and the RF front-end circuit 30. If the processing unit 10 outputs the first signal, and the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal output by the output end 52 of the detection circuit 50, it indicates that the detection end 51 of the detection circuit 50 has not detected a signal at the second end 42 of the antenna 40, while the first end 41 of the antenna 40 receives the signal processed by the transceiver 20 and the RF front-end circuit 30. This indicates that the antenna 40 is abnormal, resulting in the inability to transmit the signal received by the first end 41 of the antenna 40, which in turn causes the detection end 51 of the detection circuit 50 to fail to detect the signal, and the feedback receiving end 23 of the transceiver 20 to fail to receive the first feedback signal.

[0059] Through the above steps, the antenna testing device determines whether the antenna is abnormal based on whether the feedback receiving end of the transceiver 20 receives the first feedback signal. If the processing unit 10 outputs the first signal and the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal, it indicates that the antenna 40 is abnormal, causing it to be unable to output the signal received at the first end 41 of the antenna 40. Consequently, the first end of the detection circuit 50 cannot detect the first feedback signal at the second end 42 of the antenna 40, and the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal. If the processing unit 10 outputs the first signal and the feedback receiving end 23 of the transceiver 20 receives the first feedback signal, it indicates that the antenna is not abnormal, causing the antenna 40 to output the signal received at the first end 41 of the antenna 40. Consequently, the detection end 51 of the detection circuit 50 detects the first feedback signal at the second end of the antenna, and the feedback receiving end 23 of the transceiver receives the first feedback signal detected by the detection circuit 50.

[0060] Please see Figure 3 , Figure 3This is a schematic diagram of another antenna testing device provided in an embodiment of this application. The device includes a processing unit 10, a transceiver 20, an RF front-end circuit 30, an antenna 40, and a detection circuit 50. The processing unit 10 includes an output terminal 11, the transceiver 20 includes a first terminal 21, a second terminal 22, and a feedback receiving terminal 23, the RF front-end circuit 30 includes a first terminal 31 and a second terminal 32, the antenna 40 includes a first terminal 41 and a second terminal 42, and the detection circuit 50 includes a connection unit 60 and a switching unit 70. The switching unit 70 includes a first terminal 71 and a second terminal 72, and the connection unit 60 includes a first terminal 61 and a second terminal 62.

[0061] Specifically, the output terminal 11 of the processing unit 10 is connected to the first terminal 21 of the transceiver 20, the second terminal 22 of the transceiver 20 is connected to the first terminal 31 of the radio frequency front-end circuit 30, the second terminal 32 of the radio frequency front-end circuit 30 is connected to the first terminal 41 of the antenna 40, the second terminal 42 of the antenna 40 is connected to the first terminal 61 of the connection unit 60, the second terminal 62 of the connection unit 60 is connected to the first terminal 71 of the switching unit 70, and the second terminal 72 of the switching unit 70 is connected to the feedback receiving terminal 23 of the transceiver 20.

[0062] The switching unit 70 is used to control the antenna testing device for testing antenna malfunctions. When the antenna device is controlled for testing antenna malfunctions, the first terminal 71 of the switching unit 70 is connected to the second terminal 72, and the first feedback signal detected by the connection unit 60 can be transmitted to the feedback receiving terminal 23 of the transceiver 20 through the switching unit 70.

[0063] The connection unit 60 is used to detect the signal at the second end 42 of the antenna 40 and transmit the detected signal to the first end 71 of the switching unit 70.

[0064] Optionally, the connection unit 60 is a transmission line for transmitting radio frequency signals. The connection unit 60 is used to transmit the signal detected on the antenna 40 by the first end 61, reducing signal loss during transmission. Further optionally, the connection unit 60 can be any of the following: a microstrip line, a stripline, or a coaxial cable.

[0065] Alternatively, the connection unit 60 can be a microstrip line. This smaller microstrip line connects to the second end 42 of the antenna 40 to detect signals on the antenna 40 and transmits the detected signals to the first end 71 of the switching unit 70. Using a microstrip line as the connection unit 60, compared to using other transmission lines for transmitting radio frequency signals, results in a smaller size, reducing the size requirements for integrating the microstrip line into the antenna test device and lowering the integration difficulty.

[0066] Optionally, the switching unit 70 is a switch for transmitting radio frequency signals.

[0067] Alternatively, the switching unit 70 may be an RF switch.

[0068] Please see Figure 4 , Figure 4 This is a schematic diagram of another antenna testing device provided in an embodiment of this application. The device includes a processing unit 10, a transceiver 20, an RF front-end circuit 30, an antenna 40, a detection circuit 50, an intermediate frequency tuning circuit 80, a low frequency tuning circuit 90, and a testing unit 100. The processing unit 10 includes an output terminal 11 and an input terminal 12; the transceiver 20 includes a first terminal 21, a second terminal 22, and a feedback receiving terminal 23; the RF front-end circuit 30 includes a first terminal 31, a third terminal 33, and a fourth terminal 34; the antenna 40 includes a second terminal 42, a third terminal 43, and a fourth terminal 44; the detection circuit 50 includes a connection unit 60 and a switching unit 70; the switching unit 70 includes a first terminal 71, a second terminal 72, a third terminal 73, and a fourth terminal 74; the connection unit 60 includes a first terminal 61 and a second terminal 62; the intermediate frequency tuning circuit 80 includes a first terminal 81, a second terminal 82, and a third terminal 83; the low frequency tuning circuit 90 includes a first terminal 91, a second terminal 92, and a third terminal 93; and the test unit 100 includes an output terminal 101.

[0069] Specifically, the output terminal 101 of the test unit 100 is connected to the input terminal 12 of the processing unit 10; the output terminal 11 of the processing unit 10 is connected to the first terminal 21 of the transceiver 20; the second terminal 22 of the transceiver 20 is connected to the first terminal 31 of the RF front-end circuit 30; the third terminal 33 of the RF front-end circuit 30 is connected to the second terminal 82 of the intermediate frequency tuning circuit 80; the third terminal 83 of the intermediate frequency tuning circuit 80 is connected to the third terminal 43 of the antenna 40; and the fourth terminal 34 of the RF front-end circuit 30 is connected to the low-frequency tuning circuit 9. The second terminal 92 of 0 is connected to the low-frequency tuning circuit and the fourth terminal 44 of the antenna 40. The second terminal 42 of the antenna 40 is connected to the first terminal 61 of the connection unit 60. The second terminal 62 of the connection unit 60 is connected to the first terminal 71 of the switch unit 70. The second terminal 72 of the switch unit 70 is connected to the feedback receiving terminal 23 of the transceiver 20. The third terminal 73 of the switch unit 70 is connected to the first terminal 81 of the intermediate frequency tuning circuit 80. The fourth terminal 74 of the switch unit 70 is connected to the first terminal 91 of the low-frequency tuning circuit 90.

[0070] The test unit 100 is used to output signal output instructions so that the processing unit 10 outputs a first signal.

[0071] The intermediate frequency tuning circuit 80 is used to tune the second signal when the antenna 40 receives the second signal, which is an intermediate frequency signal, thereby improving the reception performance of the antenna test device in receiving intermediate frequency signals and reducing signal reflection.

[0072] The low-frequency tuning circuit 90 is used to tune the third signal when the antenna 40 receives a third signal that is a low-frequency signal, thereby improving the reception performance of the antenna test device for receiving low-frequency signals and reducing signal reflection.

[0073] When the antenna 40 receives a second signal that is an intermediate frequency signal, and the first terminal 71 of the switching unit 70 is connected to the third terminal 73 of the switching unit 70, the second feedback signal detected by the first terminal 61 of the connection unit 60 is transmitted to the first terminal 81 of the intermediate frequency tuning circuit 80. The second signal received by the antenna 40 is transmitted to the processing unit 10 after being processed by the intermediate frequency tuning circuit 80, the radio frequency front-end circuit 30, and the transceiver 20.

[0074] When the antenna 40 receives a third signal that is a low-frequency signal, and the first terminal 71 of the switching unit 70 is connected to the fourth terminal 74 of the switching unit 70, the third feedback signal detected by the first terminal 61 of the connection unit 60 is transmitted to the first terminal 91 of the low-frequency tuning circuit 90. The third signal received by the antenna 40 is transmitted to the processing unit 10 after being processed by the low-frequency tuning circuit 90, the radio frequency front-end circuit 30, and the transceiver 20.

[0075] Optionally, the intermediate frequency (IF) tuning circuit 80 includes a first switch, and the low-frequency (LFM) tuning circuit 90 includes a second switch. When the first terminal 81 of the IF tuning circuit 80 receives a second feedback signal, the first switch closes and the second switch opens. The second signal, which is an IF signal, received by the antenna 40 can pass through the IF tuning circuit 80 without passing through the LFM tuning circuit 90. When the first terminal 91 of the LFM tuning circuit 90 receives a third feedback signal, the first switch opens and the second switch closes. The third signal, which is a LFM signal, received by the antenna 40 can pass through the LFM tuning circuit 90 without passing through the IF tuning circuit 80.

[0076] Optionally, the intermediate frequency (IF) tuning circuit 80 and the low-frequency (LFM) tuning circuit 90 are located within the tuning circuit. The third terminal 73 of the switching unit 70 is connected to the first terminal of the tuning circuit, and the fourth terminal 74 of the switching unit 70 is connected to the second terminal of the tuning circuit. When the first terminal of the tuning circuit receives the signal output by the switching unit 70, the IF tuning circuit 80 in the tuning circuit is connected to the path, allowing the second signal (IF signal) received by the antenna 40 to pass through the IF tuning circuit 80. When the second terminal of the tuning circuit receives the signal output by the switching unit 70, the LFM tuning circuit 90 in the tuning circuit is connected to the path, allowing the third signal (LFM signal) received by the antenna 40 to pass through the LFM tuning circuit 90.

[0077] In this embodiment, the switching unit 70 transmits the second feedback signal, which is an intermediate frequency signal, to the intermediate frequency tuning circuit 80, so that the antenna 40 receives the second signal, which is an intermediate frequency signal, and transmits it to the processing unit after passing through the intermediate frequency tuning circuit, the radio frequency front-end circuit, and the transceiver. Alternatively, the switching unit 70 transmits the third feedback signal, which is a low frequency signal, to the low frequency tuning circuit 90, so that the antenna 40 receives the third signal, which is a low frequency signal, and transmits it to the processing unit after passing through the low frequency tuning circuit, the radio frequency front-end circuit, and the transceiver.

[0078] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a communication module provided in an embodiment of this application. The communication module includes a processing unit 10, a transceiver 20, an RF front-end circuit 30, an antenna 40, a detection circuit 50, an intermediate frequency tuning circuit 80, a low frequency tuning circuit 90, and a test unit 100. The processing unit 10 includes an output terminal 11 and an input terminal 12; the transceiver 20 includes a first terminal 21, a second terminal 22, and a feedback receiving terminal 23; the RF front-end circuit 30 includes a first terminal 31, a third terminal 33, and a fourth terminal 34; the antenna 40 includes a second terminal 42, a third terminal 43, and a fourth terminal 44; the detection circuit 50 includes a connection unit 60 and a switching unit 70; the switching unit 70 includes a first terminal 71, a second terminal 72, a third terminal 73, and a fourth terminal 74; the connection unit 60 includes a first terminal 61 and a second terminal 62; the intermediate frequency tuning circuit 80 includes a first terminal 81, a second terminal 82, and a third terminal 83; the low frequency tuning circuit 90 includes a first terminal 91, a second terminal 92, and a third terminal 93; and the test unit 100 includes an output terminal 101.

[0079] Specifically, the output terminal 101 of the test unit 100 is connected to the input terminal 12 of the processing unit 10; the output terminal 11 of the processing unit 10 is connected to the first terminal 21 of the transceiver 20; the second terminal 22 of the transceiver 20 is connected to the first terminal 31 of the RF front-end circuit 30; the third terminal 33 of the RF front-end circuit 30 is connected to the second terminal 82 of the intermediate frequency tuning circuit 80; the third terminal 83 of the intermediate frequency tuning circuit 80 is connected to the third terminal 43 of the antenna 40; and the fourth terminal 34 of the RF front-end circuit 30 is connected to the low-frequency tuning circuit 9. The second terminal 92 of 0 is connected to the low-frequency tuning circuit and the fourth terminal 44 of the antenna 40. The second terminal 42 of the antenna 40 is connected to the first terminal 61 of the connection unit 60. The second terminal 62 of the connection unit 60 is connected to the first terminal 71 of the switch unit 70. The second terminal 72 of the switch unit 70 is connected to the feedback receiving terminal 23 of the transceiver 20. The third terminal 73 of the switch unit 70 is connected to the first terminal 81 of the intermediate frequency tuning circuit 80. The fourth terminal 74 of the switch unit 70 is connected to the first terminal 91 of the low-frequency tuning circuit 90.

[0080] If the processing unit 10 outputs a first signal and the feedback receiving end 23 of the transceiver 20 does not receive the first feedback signal transmitted by the switching unit 70, it is determined that the antenna 40 is abnormal.

[0081] When the processing unit 10 outputs the first signal and the feedback receiving terminal 23 of the transceiver 20 receives the first feedback signal transmitted by the switching unit 70, the antenna 40 is normal.

[0082] When antenna 40 is functioning normally, wireless communication can be achieved with other devices using the communication module. Specifically, antenna 40 receives radio frequency (RF) signals transmitted by other devices. These RF signals are processed by intermediate frequency tuning circuit 80 or low frequency tuning circuit 90, RF front-end circuit 30, and transceiver 20 before being transmitted to processing unit 10. After receiving the RF signal, processing unit 10 analyzes it to obtain the information within the RF signal, thereby enabling wireless communication with the device that transmitted the RF signal.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. It should be understood that the disclosed apparatus can be implemented in other ways based on the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative.

[0084] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An antenna testing device, characterized in that, The antenna testing device is used to determine any abnormalities in the antenna within the device. The antenna testing device includes: Processing unit, transceiver, RF front-end circuit, antenna, detection circuit; The output terminal of the processing unit is connected to the first terminal of the transceiver, the second terminal of the transceiver is connected to the first terminal of the radio frequency front-end circuit, the second terminal of the radio frequency front-end circuit is connected to the first terminal of the antenna, the second terminal of the antenna is connected to the detection terminal of the detection circuit, and the output terminal of the detection circuit is connected to the feedback receiving terminal of the transceiver. The processing unit receives a signal output instruction and outputs a first signal according to the signal output instruction. The first signal is transmitted to the antenna after being processed by the transceiver and the radio frequency front-end circuit. If the processing unit outputs the first signal and the transceiver's feedback receiving end does not receive the first feedback signal output by the detection circuit, then the antenna is determined to be abnormal.

2. The antenna testing apparatus according to claim 1, characterized in that, The detection circuit includes: a switching unit and a connection unit; The first end of the connection unit is connected to the second end of the antenna, the second end of the connection unit is connected to the first end of the switch unit, and the second end of the switch unit is connected to the feedback receiving end of the transceiver. When the first end of the connection unit detects the first feedback signal at the second end of the antenna, the connection unit transmits the first feedback signal to the first end of the switching unit; when the first end of the switching unit and the second end of the switching unit are connected, the first feedback signal is transmitted to the feedback receiving end of the transceiver.

3. The antenna testing apparatus according to claim 2, characterized in that, The connection unit is a transmission line that can be used to transmit radio frequency signals.

4. The antenna testing apparatus according to claim 2, characterized in that, The connection unit is a microstrip line.

5. The antenna testing apparatus according to any one of claims 2-4, characterized in that, The switching unit further includes: a third terminal and a fourth terminal; The antenna testing device also includes: an intermediate frequency tuning circuit and a low frequency tuning circuit; The third terminal of the switching unit is connected to the first terminal of the intermediate frequency tuning circuit, the second terminal of the intermediate frequency tuning circuit is connected to the third terminal of the radio frequency front-end circuit, and the third terminal of the intermediate frequency tuning circuit is connected to the third terminal of the antenna. The fourth terminal of the switching unit is connected to the first terminal of the low-frequency tuning circuit, the second terminal of the low-frequency tuning circuit is connected to the fourth terminal of the radio frequency front-end circuit, and the third terminal of the low-frequency tuning circuit is connected to the fourth terminal of the antenna. When the antenna receives a second signal that is an intermediate frequency signal, and the first terminal of the switching unit is connected to the third terminal of the switching unit, the second feedback signal detected by the first terminal of the connection unit is transmitted to the first terminal of the intermediate frequency tuning circuit. The second signal received by the antenna is transmitted to the processing unit after passing through the intermediate frequency tuning circuit, the radio frequency front-end circuit, and the transceiver. When the antenna receives a third signal that is a low-frequency signal, and the first segment of the switching unit is connected to the fourth terminal of the switching unit, the third feedback signal detected by the first terminal of the connection unit is transmitted to the feedback receiving terminal of the low-frequency tuning circuit. The third signal received by the antenna is transmitted to the processing unit after passing through the low-frequency tuning circuit, the radio frequency front-end circuit, and the transceiver.

6. The antenna testing apparatus according to any one of claims 2-4, characterized in that, The switching unit is a switch capable of transmitting radio frequency signals.

7. The antenna testing apparatus according to any one of claims 2-4, characterized in that, The switching unit is a radio frequency switch.

8. The antenna testing apparatus according to any one of claims 1-4, characterized in that, The antenna testing device also includes a testing unit; The output of the test unit is connected to the input of the processing unit; The processing unit receives the signal output command from the output terminal of the test unit.

9. The antenna testing apparatus according to claim 1, characterized in that, If the processing unit outputs the first signal and the transceiver's feedback receiving terminal receives the first feedback signal output by the detection circuit, then it is determined that the antenna is not abnormal.

10. A communication module, characterized in that, The communication module includes the antenna testing device as described in any one of claims 1-9.

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