Transmit-receive assembly test system and terahertz front-end transmit-receive assembly test platform

Abstract

The utility model discloses a transmit-receive assembly test system and a terahertz front-end transmit-receive assembly test platform. The transmit-receive assembly test system comprises a first antenna, a single-pole double-throw switch group, a single-pole multi-throw switch and a signal processing unit. Wherein the first antenna is connected with a to-be-tested transmit-receive assembly; the head end of the single-pole double-throw switch group is connected with a first antenna through a first cable, the tail end of the single-pole double-throw switch group is connected with a load, and the single-pole double-throw switch group comprises a plurality of single-pole double-throw switches which are sequentially connected in series through a second cable; each input end of the single-pole multi-throw switch is connected with one output end of each single-pole double-throw switch. According to the utility model, the cable transmission distance of the electromagnetic wave signal during the test can be controlled by adjusting the series connection conduction relation of the single-pole double-throw switch and the single-pole multi-throw switch, and different test platforms do not need to be built according to different distances; the problem of low test efficiency caused by the fact that different test platforms need to be set up when different target distance characteristic tests are carried out on the front-end transceiving assembly in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic wave testing equipment, in particular to a transceiver component testing system and a terahertz front-end transceiver component testing platform. Background Art

[0002] The frequency of the terahertz band is high, and the carriers for transmitting signals are mainly waveguides or cables. Since the cost of terahertz frequency band cables is too high, during the design process of the front-end transceiver components in the terahertz band, the signal carriers of the products are basically waveguide structures, and the interfaces between the products and other components are basically standard waveguide flanges.

[0003] In the prior art, when testing the target distance characteristics of terahertz or millimeter wave front-end transceiver components, different test platforms need to be built for different target distances to simulate the actual working conditions of the product. However, after the product is mass-produced, the method of building a test platform is not conducive to the quick delivery of the product. And because it is troublesome to build a test platform, the efficiency of testing the mass-produced product is extremely low.

[0004] At present, no effective solution has been proposed for the problem that different test platforms need to be built to test the characteristics of different target distances of the front-end transceiver components in the prior art, resulting in low test efficiency. Utility Model Content

[0005] In view of this, the embodiments of the utility model provide a transceiver component testing system and a terahertz front-end transceiver component testing platform to at least solve the problem in the prior art that different test platforms need to be built to test the front-end transceiver components with different target distance characteristics, resulting in low testing efficiency.

[0006] The utility model embodiment provides the following technical solutions:

[0007] The present invention provides a transceiver component testing system, comprising:

[0008] A first antenna, connected to the transceiver component under test, and used to obtain an electromagnetic wave signal sent by the transceiver component under test;

[0009] A single-pole double-throw switch group, wherein the head end of the single-pole double-throw switch group is connected to the first antenna through a first cable, and the tail end is connected to a load, and the single-pole double-throw switch group includes a plurality of single-pole double-throw switches, and the plurality of single-pole double-throw switches are connected in series in sequence through a second cable;

[0010] A single-pole multi-throw switch, each input end of the single-pole multi-throw switch is respectively connected to an output end of each of the single-pole double-throw switches, and the output end of the single-pole multi-throw switch is used to connect to a signal processing unit;

[0011] Among them, by adjusting the series conduction relationship between the single-pole double-throw switch and the single-pole multi-throw switch, the cable transmission distance of the electromagnetic wave signal during the test can be controlled.

[0012] Furthermore, the first output terminal of the single-pole double-throw switch is connected to the input terminal of the next single-pole double-throw switch connected in series with the first output terminal of the single-pole double-throw switch;

[0013] The second output terminal of each of the single-pole double-throw switches is correspondingly connected to an input terminal of the single-pole multi-throw switch.

[0014] Furthermore, the lengths of the second cables of two adjacent single-pole double-throw switches are equal, so as to calculate the transmission distance of the electromagnetic wave during the test.

[0015] Furthermore, the number of input terminals of the single-pole multi-throw switch is equal to the number of input terminals of the single-pole double-throw switch.

[0016] Furthermore, the transceiver component testing system further includes:

[0017] A signal processing unit, wherein the input end of the signal processing unit is connected to the output end of the single-pole multi-throw switch through a third cable, and is used for processing the electromagnetic wave signal sent by the single-pole multi-throw switch.

[0018] Furthermore, the signal processing unit includes:

[0019] A coupler, the input end of the coupler is connected to the output end of the single-pole multi-throw switch through the third cable, and is used to reduce the signal power of the electromagnetic wave signal sent by the single-pole multi-throw switch.

[0020] Furthermore, the signal processing unit further includes:

[0021] A voltage-controlled attenuator, the input end of which is connected to the output end of the coupler, is used to dynamically adjust the signal power of the radio frequency signal sent by the coupler.

[0022] Furthermore, the signal processing unit further includes:

[0023] A two-way power divider, the input end of which is connected to the output end of the voltage-controlled attenuator, for dividing the radio frequency signal output by the voltage-controlled attenuator into two paths;

[0024] A second antenna, wherein an input end of the second antenna is connected to the first output end of the two-way power divider, and an output end of the second antenna is connected to the transceiver component under test, and is used to send one of the RF signals to the transceiver component under test;

[0025] A frequency conversion module, wherein the first input end of the frequency conversion module is connected to the second output end of the two-way power divider, the second input end of the frequency conversion module is connected to the electromagnetic wave frequency source, and the output end of the frequency conversion module is connected to the processing unit. The frequency conversion module is used to obtain an intermediate frequency signal based on the local oscillator signal sent by the electromagnetic wave frequency source and the other radio frequency signal sent by the two-way power divider, and send the intermediate frequency signal to the processing unit for signal processing.

[0026] Furthermore, the signal processing unit further includes:

[0027] An electromagnetic wave power meter, the two ends of which are respectively connected to the coupler and the processing unit, and is used to measure the power of the electromagnetic wave output by the coupler;

[0028] A detector, which is integrated into the electromagnetic wave power meter and is used to cooperate with the electromagnetic wave power meter to perform quantitative measurement of the radio frequency signal

[0029] The present utility model also provides a terahertz front-end transceiver component test platform, including:

[0030] A test chassis, wherein a terahertz band absorbing material layer is arranged along the circumference of the test chassis;

[0031] As any of the above-mentioned transceiver component testing systems, the transceiver component testing system is arranged in the testing chassis and is located between the terahertz band absorption material layers.

[0032] Compared with the prior art, the at least one technical solution adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0033] The utility model discloses a transceiver component testing system, which can control the series conduction relationship between the single-pole double-throw switch and the single-pole multi-throw switch by controlling the on-off of the input end and the corresponding output end in a single-pole double-throw switch and the on-off of the corresponding input end and the output end in a single-pole multi-throw switch, so as to control the propagation distance of the electromagnetic wave signal acquired by the first antenna in the first cable, the second cable and the third cable, and then cooperate with the signal processing unit to realize the target detection of the electromagnetic wave transceiver component at different distances, thereby solving the problem in the prior art that different test platforms need to be built to perform different target distance characteristic tests on the front-end transceiver component, resulting in low test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of a transceiver component testing system according to an embodiment of the present utility model.

[0036] 10. First antenna;

[0037] 20. First cable;

[0038] 30. Single-pole double-throw switch group; 31. Single-pole double-throw switch;

[0039] 40. Second cable;

[0040] 50. Single-pole multiple-throw switch;

[0041] 60. The third cable;

[0042] 70. Signal processing unit; 71. Coupler; 72. Voltage-controlled attenuator; 73. Two-way power divider; 74. Second antenna; 75. Frequency conversion module; 76. Electromagnetic wave power meter;

[0043] 80. The transceiver component under test. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] The following describes the implementation methods of the present application through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0048] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0049] The transceiver components are generally used for target detection. The distance for detecting targets in the terahertz band is generally short. In order to conveniently test the target detection characteristics of terahertz component products at different distances, different target test systems need to be designed according to the performance of different transceiver components.

[0050] The testing of transceiver components in the prior art has the following problems:

[0051] (1) In the prior art, when testing components in the millimeter wave and terahertz frequency bands, various test instruments and equipment are relatively expensive, and the test platform is also relatively troublesome to build, so the efficiency of mass product testing is extremely low;

[0052] (2) When testing the target distance characteristics of existing products, it is necessary to build a test platform in a corresponding clean environment to simulate the actual product working conditions. The surrounding conditions of the test environment may affect the test performance indicators of the component products;

[0053] (3) After the product is put into mass production, using an open environment to build a test platform is not conducive to the quick delivery of the product;

[0054] (4) Building a test platform in a clean environment is effective for normal temperature testing of products, but is not friendly for high and low temperature target characteristic testing of products. It is necessary to build a test platform in an ultra-large high and low temperature greenhouse environment, which is too costly.

[0055] In view of this, the utility model inventor believes that according to the performance of different transceiver components, it is necessary to design a target test system with scalable distance to facilitate target detection tests at different distances.

[0056] Based on this, the present invention proposes a processing solution: Figure 1 As shown, a transceiver component testing system of the utility model cascades multiple stages of terahertz band cables of equal length through a multi-stage single-pole double-throw switch 31, and obtains a suitable test distance and test function according to the performance index requirements of the transceiver component 80 to be tested. Then, by controlling the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50, the transmission distance of the electromagnetic wave signal in the cable meets the detection distance of the product to be tested, and finally the product to be tested is powered on to perform corresponding functional tests.

[0057] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0058] Example 1

[0059] The embodiment of the utility model provides a transceiver component test system, including a first antenna 10, a single-pole double-throw switch group 30, a single-pole multi-throw switch 50 and a signal processing unit 70. The first antenna 10 is connected to the transceiver component 80 under test, and is used to obtain the electromagnetic wave signal sent by the transceiver component 80 under test; the head end of the single-pole double-throw switch group 30 is connected to the first antenna 10 through a first cable 20, and the tail end is connected to the load. The single-pole double-throw switch group 30 includes a plurality of single-pole double-throw switches 31, and the plurality of single-pole double-throw switches 31 are connected in series in sequence through a second cable 40; each input end of the single-pole multi-throw switch 50 is respectively connected to an output end of each single-pole double-throw switch 31; the input end of the signal processing unit 70 is connected to the single-pole multi-throw through a third cable 60. The output end of the switch 50 is connected to process the electromagnetic wave signal sent by the single-pole multi-throw switch 50; wherein, by controlling the on-off of the input end and the corresponding output end in the single-pole double-throw switch 31 and the on-off of the corresponding input end and output end in the single-pole multi-throw switch 50, the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50 can be controlled to control the cable transmission distance of the electromagnetic wave signal during the test, thereby effectively simulating and testing the target detection of the transceiver component 80 under test at different distances and the signal-to-noise ratio of targets at different distances.

[0060] The first antenna 10 can obtain microwaves, millimeter waves or terahertz waves.

[0061] Preferably, the transceiver component 80 under test is a terahertz frequency band transceiver component.

[0062] The first antenna 10 is a horn antenna having a transmitting port and a receiving port.

[0063] Among them, the head end of the single-pole double-throw switch group 30 is the input end of a single-pole double-throw switch 31 located at the head end of the single-pole double-throw switch group 30, and the input end of the single-pole double-throw switch 31 is connected to the first antenna 10 through the first cable 20 to obtain the electromagnetic wave signal sent by the first antenna 10, so that the electromagnetic wave signal is transmitted in the second cable 40.

[0064] The tail end of the SPDT switch group 30 is a first output end of a SPDT switch 31 located at the tail end of the SPDT switch group 30 . The first output end of the SPDT switch 31 is connected to the load, and the second output end is connected to an input end of the SPMT switch 50 .

[0065] Furthermore, the first output end of the single-pole double-throw switch 31 located at the non-tail end of the single-pole double-throw switch group 30 is correspondingly connected to the input end of the next single-pole double-throw switch 31 connected in series with it; and the second output end of each single-pole double-throw switch 31 is correspondingly connected to an input end of the single-pole multi-throw switch 50.

[0066] For example, Figure 1 As shown, in the case where the input end of the single-pole double-throw switch 31 is port RFcom, the first output end is port RF1, and the second output end is port RF2, except that the port RFcom of the single-pole double-throw switch 31 located at the head end of the single-pole double-throw switch group 30 is connected to the first antenna 10 through the first cable 20, and the port RF1 of the single-pole double-throw switch 31 located at the tail end of the single-pole double-throw switch group 30 is connected to the matching load, the port RF1 of the remaining single-pole double-throw switch groups 30 is connected to the port RFcom of the next single-pole double-throw switch 31 connected in series with itself, and the port RF2 of the single-pole double-throw switch 31 is respectively connected to the input end of the single-pole multi-throw switch 50.

[0067] Preferably, the number of input terminals of the single-pole multi-throw switch 50 is equal to the number of the single-pole double-throw switches 31, so that each single-pole double-throw switch 31 is connected to an input terminal of the single-pole multi-throw switch 50, that is, the first input terminal of each single-pole double-throw switch 31 is correspondingly connected to an input terminal of the single-pole multi-throw switch 50.

[0068] Among them, the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50 refers to controlling the on-off of the input end and the output end of the single-pole double-throw switch 31 and the on-off of the input end and the output end of the single-pole multi-throw switch 50 so that different single-pole double-throw switches 31 are connected in series with the single-pole multi-throw switch 50, thereby forming different electromagnetic wave signal transmission paths.

[0069] The series connection of three single-pole double-throw switches 31 and a single-pole multi-throw switch 50 is taken as an example to illustrate how the single-pole double-throw switch 31 is connected in series with the single-pole multi-throw switch 50. When the three single-pole double-throw switches 31 are respectively the first single-pole double-throw switch, the second single-pole double-throw switch, and the third single-pole double-throw switch, at this time, the input end of the first single-pole double-throw switch is connected to the first output end of the first single-pole double-throw switch, the input end of the second single-pole double-throw switch is connected to the first output end of the second single-pole double-throw switch, and the input end of the third single-pole double-throw switch is connected to the second output end of the third single-pole double-throw switch. Finally, the input end of the single-pole multi-throw switch 50 connected to the second output end of the third single-pole double-throw switch is connected to the output end of the single-pole multi-throw switch 50, thereby realizing the series connection of the first single-pole double-throw switch, the second single-pole double-throw switch, the third single-pole double-throw switch and the single-pole multi-throw switch 50.

[0070] The single-pole double-throw switch 31 and the single-pole multi-throw switch 50 may be electronic switches or mechanical switches.

[0071] Preferably, the SPDT switch 31 and the SPMT switch 50 are electronic switches, so as to facilitate remote control of the SPDT switch 31 and the SPMT switch 50 or convenient control of the SPDT switch 31 and the SPMT switch 50 through a controller.

[0072] In some embodiments, the number of input terminals of the SPMT switch 50 may be less than the number of the SPDT switches 31 , so that a plurality of SPDT switches 31 are connected to an input terminal of the SPMT switch 50 .

[0073] Furthermore, the lengths of the second cables 40 of two adjacent single-pole double-throw switches 31 are equal, so as to calculate the transmission distance of the electromagnetic wave during the test.

[0074] Preferably, the length of the second cable 40 may be 0.5 m.

[0075] In a specific embodiment of the present invention, if the transceiver component testing system of the present invention is applied to terahertz waves, the length of the first cable 20 and the third cable 60 can be 0.2m, and the length of the second cable 40 can be 0.5m. At this time, when N single-pole double-throw switches 31 are connected in series with the single-pole multi-throw switch 50, the transmission distance of the electromagnetic wave signal is 0.2*2+0.5*N, so that the propagation distance of the electromagnetic wave is controlled by controlling the series connection relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50, so that the transmission distance of the electromagnetic wave signal in the cable meets the detection distance of the product to be tested.

[0076] For example, when testing the detection performance of 0.2m, the switch state of the single-pole double-throw switch 31 is 1 (the single-pole double-throw control bit is 1, when the control bit is low level 0, the connection relationship of the single-pole double-throw switch 31 is port RFcom to port RF1, when the control bit is high level 1, the connection relationship of the single-pole double-throw switch 31 is port RFcom to port RF2), and the state of the single-pole multi-throw switch 50 is 1000..., a total of N+1 bits, (the control bit of the single-pole N-throw switch is N+1 bits, the corresponding high-level switch turns on the corresponding branch, the control bits of the remaining branches are 0, and the remaining branches are all turned off).

[0077] The lengths of the first cable 20 , the second cable 40 , and the third cable 60 can be flexibly set according to the indicators of different electromagnetic wave transceiver components.

[0078] A transceiver component testing system of an embodiment of the utility model can simulate the closed-loop working condition of the signal link in the actual air environment of the terahertz band transceiver front end through the path selection combination of the single-pole double-throw switch 31 and the second cable 40. After the terahertz wave signal passes through a path of a specific length, the power intensity of the terahertz wave signal after passing a certain distance can be tested, and then the signal-to-noise ratio of the terahertz wave signal after passing a certain distance can be measured.

[0079] Among them, the transmission distance of the terahertz wave signal in the cable can be selected according to the performance index requirements of the transceiver component 80 under test.

[0080] The inventive point of the present invention is to control the transmission distance of the electromagnetic wave signal in the cable through the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50, so as to test the target detection performance of the transceiver component at different distances, rather than the processing method of the electromagnetic wave signal by the signal processing unit 70. Therefore, the signal processing unit 70 of the present invention can be the same as the signal processing unit in the existing electromagnetic wave transceiver component.

[0081] Among them, the on-off of the input end and the corresponding output end of the single-pole double-throw switch 31 of the present application and the on-off of the input end and the output end of the single-pole multi-throw switch 50 can be manually controlled or remotely controlled via a terminal controller.

[0082] In some of the embodiments, the single-pole double-throw switch 31 and the single-pole multi-throw switch 50 can be controlled through the terminal control interface, so that the on-off of the input and output ends of the single-pole double-throw switch 31 and the on-off of the input and output ends of the single-pole multi-throw switch 50 can be adjusted through the terminal control interface, and the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50 can be controlled, thereby controlling the distance that the electromagnetic wave signal propagates in the cable.

[0083] Among them, controlling the single-pole double-throw switch 31 and the single-pole multi-throw switch 50 through the terminal control interface is only one method of the present invention. The single-pole double-throw switch 31 and the single-pole multi-throw switch 50 can also be controlled by other methods, such as manual switching.

[0084] The following is a specific implementation of the signal processing unit 70 of the present invention.

[0085] Furthermore, the signal processing unit 70 includes a coupler 71 , an input end of the coupler 71 is connected to an output end of the SPMT switch 50 via a third cable 60 , and is used to reduce the signal power of the electromagnetic wave signal sent by the SPMT switch 50 .

[0086] The coupler 71 may be a 10 dB coupler. The coupler 71 is used to prevent the measured signal power from being too large, so that the power meter or detector exceeds the range or burns out.

[0087] Furthermore, the signal processing unit 70 further includes a voltage-controlled attenuator 72 , the input end of which is connected to the output end of the coupler 71 , for dynamically adjusting the signal power of the radio frequency signal sent by the coupler 71 .

[0088] The voltage-controlled attenuator 72 is used to dynamically adjust the power of the signal under test, dynamically simulate signal changes at a fixed distance, and test the dynamic range of the product under test at a fixed distance.

[0089] Furthermore, the signal processing unit 70 also includes a two-way power divider 73 and a second antenna 74. The input end of the two-way power divider 73 is connected to the output end of the voltage-controlled attenuator 72, and is used to divide the RF signal output by the voltage-controlled attenuator 72 into two paths; the input end of the second antenna 74 is connected to the first output end of the two-way power divider 73, and the output end of the second antenna 74 is connected to the transceiver component under test 80, and is used to send one of the RF signals to the transceiver component under test 80.

[0090] The two-way power divider 73 divides the RF signal under test into two ways, one way for the internal signal processor of the transceiver component 80 under test to evaluate the signal (required value), and the other way for providing the evaluation result of the test system for reference (reference value).

[0091] Furthermore, the signal processing unit 70 also includes a frequency conversion module 75, a first input end of the frequency conversion module 75 is connected to the second output end of the two-way power divider 73, a second input end of the frequency conversion module 75 is connected to the electromagnetic wave frequency source, an output end of the frequency conversion module 75 is connected to the processing unit, and the frequency conversion module 75 is used to obtain an intermediate frequency signal based on a local oscillator signal sent by the electromagnetic wave frequency source and another radio frequency signal sent by the two-way power divider 73, and send the intermediate frequency signal to the processing unit for signal processing.

[0092] Among them, since the frequency of the measured signal belongs to the terahertz frequency band, the signal frequency needs to be moved to a lower intermediate frequency band to facilitate signal processing, so the mixer in the frequency conversion module 75 is needed to perform spectrum shifting. The mixer needs to provide two signals, namely the radio frequency signal RF and the local oscillator signal LO, and the difference between the two frequencies is the intermediate frequency signal.

[0093] In some of the embodiments, control conditions can be preset in the processing unit so that after buffer driving, the processing unit controls the corresponding single-pole double-throw switch 31 and the single-pole multi-throw switch 50, thereby controlling the series conduction relationship between the single-pole double-throw switch 31 and the single-pole multi-throw switch 50, that is, controlling the distance that the electromagnetic wave signal propagates in the cable, so that the total electromagnetic wave signal propagation path meets the product detection distance requirements.

[0094] Furthermore, the signal processing unit 70 also includes an electromagnetic wave power meter 76 and a detector. The two ends of the electromagnetic wave power meter 76 are respectively connected to the coupler 71 and the processing unit, and are used to measure the power of the electromagnetic wave output by the coupler 71; the detector is integrated in the electromagnetic wave power meter 76, and is used to cooperate with the electromagnetic wave power meter 76 to perform quantitative measurement of the radio frequency signal.

[0095] Among them, the electromagnetic wave power meter 76 and the detector quantify the power of the RF signal, converting the RF power signal dBm into mW or voltage model. The converted value and the power of the RF power signal are in a one-to-one correspondence, thereby converting the RF signal into a form that is easier to quantify and process.

[0096] The working principle of the utility model is as follows:

[0097] According to the performance of the transceiver assembly 80 to be tested, a corresponding number of single-pole double-throw switches 31 are selected to be connected in series with the single-pole multi-throw switch 50;

[0098] The transceiver assembly 80 under test sends an electromagnetic wave signal to the first antenna 10 , and the electromagnetic wave signal reaches the coupler 71 after passing through the first cable 20 , the second cable 40 , and the third cable 60 ;

[0099] The coupler 71 adjusts the signal power of the electromagnetic wave signal to avoid excessive signal power, which causes the electromagnetic wave power meter 76 to be saturated or exceed the range;

[0100] After the voltage-controlled attenuator 72 obtains the radio frequency signal sent by the coupler 71, it dynamically adjusts the signal power of the radio frequency signal to test the dynamic range index of the product at different distances;

[0101] The two-way power divider 73 divides the RF signal into two ways, one of which is transmitted to the transceiver component under test 80 through the second antenna 74 for down-mixing of the transceiver component under test 80, and then the signal processing module in the transceiver component under test 80 processes the RF signal and evaluates the corresponding index;

[0102] Another RF signal is transmitted to the frequency conversion module 75, and the frequency conversion module 75 obtains the intermediate frequency signal according to the other RF signal and the obtained local oscillator signal. Finally, the intermediate frequency signal enters the processing unit, and the processing unit processes the intermediate frequency signal to provide a reference criterion.

[0103] The utility model can select a fixed transmission path combination, which speeds up the testing of batch products, and can also provide target detection performance testing of environmental experiments for products, thus speeding up the progress of product testing.

[0104] Example 2

[0105] The embodiment of the utility model also provides a terahertz front-end transceiver component test platform, comprising a test chassis and any of the above-described transceiver component test systems. The test chassis is provided with a terahertz band absorption material layer along its circumference; the transceiver component test system is provided in the test chassis and located between the terahertz band absorption material layers.

[0106] The first cable 20, the second cable 40 and the third cable 60 are coiled inside the test box, and a terahertz band absorbing material layer is installed around the inside of the test box and inside the box to absorb reflected terahertz electromagnetic waves.

[0107] After the transceiver component test system is placed in the test case, the test case can be placed in different temperature environments to perform a target performance test on the product to be tested at a specific temperature.

[0108] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiment described later, since it corresponds to the method, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0109] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A transceiver component testing system, characterized in that: include: A first antenna, the first antenna is connected to the transceiver component under test and is used to obtain an electromagnetic wave signal sent by the transceiver component under test; A single-pole double-throw switch group, wherein the head end of the single-pole double-throw switch group is connected to the first antenna through a first cable, and the tail end is connected to a load, and the single-pole double-throw switch group includes a plurality of single-pole double-throw switches, and the plurality of single-pole double-throw switches are connected in series in sequence through a second cable; A single-pole multi-throw switch, each input end of the single-pole multi-throw switch is respectively connected to an output end of each of the single-pole double-throw switches, and the output end of the single-pole multi-throw switch is used to connect to a signal processing unit; Among them, by adjusting the series conduction relationship between the single-pole double-throw switch and the single-pole multi-throw switch, the cable transmission distance of the electromagnetic wave signal during the test can be controlled.

2. The transceiver component testing system according to claim 1, characterized in that: The first output end of the single-pole double-throw switch is connected to the input end of the next single-pole double-throw switch connected in series with the first output end of the single-pole double-throw switch; The second output terminal of each of the single-pole double-throw switches is correspondingly connected to an input terminal of the single-pole multi-throw switch.

3. The transceiver component testing system according to claim 2, characterized in that: The lengths of the second cables of two adjacent single-pole double-throw switches are equal, so as to calculate the transmission distance of the electromagnetic wave during the test.

4. The transceiver component testing system according to claim 1, characterized in that: The number of input terminals of the SPMT switch is equal to the number of the SPDT switch.

5. The transceiver component testing system according to claim 1, characterized in that: Also includes: A signal processing unit, wherein the input end of the signal processing unit is connected to the output end of the single-pole multi-throw switch through a third cable, and is used for processing the electromagnetic wave signal sent by the single-pole multi-throw switch.

6. The transceiver component testing system according to claim 5, characterized in that: The signal processing unit comprises: A coupler, the input end of the coupler is connected to the output end of the single-pole multi-throw switch through the third cable, and is used to reduce the signal power of the electromagnetic wave signal sent by the single-pole multi-throw switch.

7. The transceiver component testing system according to claim 6, characterized in that: The signal processing unit further includes: A voltage-controlled attenuator, the input end of which is connected to the output end of the coupler, is used to dynamically adjust the signal power of the radio frequency signal sent by the coupler.

8. The transceiver component testing system according to claim 7, characterized in that: The signal processing unit further includes: A two-way power divider, the input end of which is connected to the output end of the voltage-controlled attenuator, for dividing the radio frequency signal output by the voltage-controlled attenuator into two paths; A second antenna, wherein an input end of the second antenna is connected to the first output end of the two-way power divider, and an output end of the second antenna is connected to the transceiver component under test, and is used to send one of the RF signals to the transceiver component under test; A frequency conversion module, wherein the first input end of the frequency conversion module is connected to the second output end of the two-way power divider, the second input end of the frequency conversion module is connected to the electromagnetic wave frequency source, and the output end of the frequency conversion module is connected to the processing unit. The frequency conversion module is used to obtain an intermediate frequency signal based on the local oscillator signal sent by the electromagnetic wave frequency source and the other radio frequency signal sent by the two-way power divider, and send the intermediate frequency signal to the processing unit for signal processing.

9. The transceiver component testing system according to claim 8, characterized in that: The signal processing unit further includes: An electromagnetic wave power meter, the two ends of which are respectively connected to the coupler and the processing unit, and is used to measure the power of the electromagnetic wave output by the coupler; A detector is integrated in the electromagnetic wave power meter and is used to cooperate with the electromagnetic wave power meter to perform quantitative measurement on the radio frequency signal.

10. A terahertz front-end transceiver component test platform, characterized in that: include: A test chassis, wherein a terahertz band absorbing material layer is arranged along the circumference of the test chassis; The transceiver component testing system according to any one of claims 1 to 9, wherein the transceiver component testing system is arranged in the testing chassis and is located between the terahertz band absorption material layers.

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