Microwave transmission fixture, line test fixture and test method

Abstract

The application discloses a microwave transmission line fixing device, a test tool and a test method, wherein the microwave transmission line fixing device comprises a first bottom plate, a first mounting plate and a second mounting plate; the first mounting plate and the second mounting plate are arranged on the first bottom plate and are arranged in parallel; the first mounting plate is used for fixing one end of the microwave transmission line, and the second mounting plate is used for fixing the other end of the microwave transmission line. By arranging the microwave transmission line fixing device, the two ends of the microwave transmission line are fixed on the first mounting plate and the second mounting plate, and then the performance of the microwave transmission line is tested, so that the microwave transmission line is prevented from moving or shaking during the test, and the accuracy and consistency of the test result are ensured.

Description

Technical Field

[0001] The present application relates to the field of quantum computer technology, and in particular to a microwave transmission line fixture, test fixture, and test method. Background Art

[0002] Quantum computers are physical devices that follow the laws of quantum mechanics to perform high-speed mathematical and logical operations, store, and process quantum information. Their key characteristics include rapid operation, robust information processing capabilities, and a wide range of applications. Among the various quantum computing technology approaches, superconducting technology holds great promise, and quantum computers developed based on this approach are attracting significant industry attention.

[0003] The fundamental unit of superconducting quantum computing is the superconducting quantum chip, which requires operation in an ultra-low temperature environment of approximately 10mK to 20mK (Kelvins). This low temperature effectively reduces the impact of ambient noise on the superconducting quantum chip. This ultra-low temperature is typically provided by a dilution refrigerator, where microwave control circuits are essential for connecting external signal sources to the internal superconducting quantum chip.

[0004] In existing superconducting quantum computers, as the number of quantum bits on superconducting quantum chips increases, more microwave control circuits are needed to control the superconducting quantum chips. Each microwave control circuit is composed of multiple microwave transmission lines (wherein the multiple microwave transmission lines that make up a microwave control circuit are referred to as an entire microwave transmission line). To ensure the normal operation of the microwave control circuit, it is necessary to ensure that the electrical parameters of each microwave transmission line are normal. Therefore, before installation, a vector network analyzer is used to test the electrical parameters of the microwave transmission line. Specifically, the input and output terminals of the vector network analyzer are connected to the two ends of the microwave transmission line, and then the electrical parameters are tested. However, this testing method has the defect of inconsistent test results each time. Summary of the Invention

[0005] The purpose of this application is to provide a microwave transmission line fixture, test fixture and test method to ensure the consistency of each test result.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In one aspect, the present application provides a microwave transmission line fixing device, comprising a first base plate, a first mounting plate, and a second mounting plate;

[0008] The first mounting plate and the second mounting plate are disposed on the first bottom plate and are arranged in parallel with each other;

[0009] The first mounting plate is used to fix one end of the microwave transmission line, and the second mounting plate is used to fix the other end of the microwave transmission line.

[0010] As described above, the microwave transmission line fixing device further comprises: first connectors being provided at both ends of the microwave transmission line; second connectors being provided on both the first mounting plate and the second mounting plate; and the first connectors and the second connectors being connected in a one-to-one correspondence.

[0011] The microwave transmission line fixing device as described above, further, a plurality of the second connectors are arranged in an array on both the first mounting plate and the second mounting plate.

[0012] The microwave transmission line fixing device as described above further includes a transmission mechanism provided on the first base plate, and the transmission mechanism is used to drive the second mounting plate to move along the extension direction of the first base plate.

[0013] The microwave transmission line fixing device as described above, further, the transmission mechanism includes a screw rod, a limiting rod, a nut block, a turntable, a first bearing seat and a second bearing seat;

[0014] The two ends of the screw rod are respectively arranged in the first bearing seat and the second bearing seat through bearings; the two ends of the limit rod are respectively fixed on the first bearing seat and the second bearing seat;

[0015] The screw rod and the limiting rod are arranged in parallel, the nut block is arranged on the screw rod, the second mounting plate is fixed on the nut block, and the first mounting plate is fixed on the first bearing seat or the second bearing seat; the turntable is fixed to one end surface of the screw rod;

[0016] The first bearing seat and the second bearing seat are arranged on the first base plate.

[0017] The microwave transmission line fixing device as described above is further characterized in that the turntable in the transmission mechanism is replaced by a motor.

[0018] The microwave transmission line fixing device as described above, further, a hanging ring is provided on the first bearing seat or the second bearing seat.

[0019] The microwave transmission line fixing device as described above, further, has scale lines provided on the limiting rod.

[0020] In another aspect, the present application provides a microwave transmission line test fixture, comprising a microwave transmission line test device and the microwave transmission line fixing device described above;

[0021] The input end and the output end of the microwave transmission line testing device are respectively connected to two ends of the microwave transmission line.

[0022] The microwave transmission line test fixture as described above, further, the microwave transmission line test device includes a vector network analyzer.

[0023] The present application also provides a method for testing a microwave transmission line, comprising the following steps:

[0024] Fixing the two ends of the microwave transmission line to the first mounting plate and the second mounting plate of the microwave transmission line fixing device respectively;

[0025] Connecting the input end and the output end of the microwave transmission line testing device to two ends of the microwave transmission line respectively;

[0026] The microwave transmission line testing device is used to test the electrical parameters of the microwave transmission line.

[0027] The microwave transmission line testing method as described above, further, when used to test a single microwave transmission line or each of the multiple microwave transmission lines, the number of the microwave transmission lines corresponds one-to-one to the number of the microwave transmission line testing devices, and the two ends of each microwave transmission line are respectively connected to the input and output ends of one of the microwave transmission line testing devices.

[0028] The microwave transmission line testing method described above, when used to test the entire microwave transmission line, further comprises the following steps:

[0029] fixing both ends of each of the microwave transmission lines in the entire microwave transmission line to the first mounting plate and the second mounting plate of the microwave transmission line fixing device respectively;

[0030] The microwave transmission lines are connected in series using connecting wires;

[0031] Connecting the input end and the output end of the microwave transmission line test device to the two ends of the series-connected microwave transmission line respectively;

[0032] The microwave transmission line testing device is used to test the electrical parameters of the entire microwave transmission line.

[0033] The microwave transmission line testing method as described above is further performed at room temperature or in a liquid nitrogen environment.

[0034] The beneficial effects of this application are:

[0035] The test fixture of the present application sets up a microwave transmission line fixing device, fixes the two ends of the microwave transmission line to the first mounting plate and the second mounting plate, and then tests its performance. This operation ensures that the microwave transmission line will not move or shake during the test, thereby ensuring the accuracy and consistency of each test result.

[0036] The test tooling and test methods provided in this application have the same beneficial effects and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic structural diagram of the microwave transmission line fixing device provided in Example 1 of the present application;

[0038] Figure 2 A schematic structural diagram of the microwave transmission line test fixture provided in Example 1 of the present application;

[0039] Figure 3 A schematic structural diagram of a microwave transmission line fixing device provided in Example 2 of the present application;

[0040] Figure 4 A schematic structural diagram of the first bearing seat provided in Example 2 of the present application;

[0041] Figure 5 A schematic structural diagram of the second bearing seat provided in Example 2 of the present application;

[0042] Figure 6 A schematic diagram of using multiple microwave transmission line testing devices to test multiple microwave transmission lines provided in Example 1 of the present application;

[0043] Figure 7 A schematic diagram of using a microwave transmission line testing device to test an entire microwave transmission line provided in Example 1 of the present application;

[0044] Figure 8 Flowchart of the test method provided in Example 3 of the present application;

[0045] In the accompanying drawings:

[0046] 100-microwave transmission line fixing device, 200-microwave transmission line testing device, 300-microwave transmission line, 400-connecting line, 500-first connector;

[0047] 101-first base plate, 102-first mounting plate, 103-second mounting plate, 104-second connector, 105-screw, 106-limiting rod, 107-nut block, 108-turntable, 109-first bearing seat, 1091-first seat body, 1092-second seat body, 1093-first mounting hole, 1094-second mounting hole, 1095-seventh mounting hole, 110-second bearing seat, 1101-third seat body, 1102-fourth seat body, 1103-fourth mounting hole, 1104-fifth mounting hole, 111-first support seat, 112-second support seat, 113-lifting ring. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. The embodiments described below with reference to the drawings are exemplary and are only used to explain this application, and cannot be interpreted as limiting this application.

[0049] In the description of this application, it should be understood that the terms "center", "up", "down", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] Example 1

[0052] The microwave control circuit is an essential circuit installed within the dilution refrigerator, connecting external signal source equipment and the internal superconducting quantum chip. It integrates multiple microwave control circuits. Each microwave control circuit is composed of multiple electrically interconnected microwave transmission lines 300. To ensure the proper functioning of the microwave control circuit, it is necessary to ensure the normal electrical parameters of each microwave transmission line 300. When testing individual microwave transmission lines 300 within the microwave control circuit, the applicant discovered that the measured electrical parameters of the same microwave transmission line 300 often varied. After extensive experimentation and research, the applicant discovered that movement or shaking of the microwave transmission line 300 during testing can affect the test results.

[0053] Based on the above reasons, the present application provides a microwave transmission line fixing device 100, such as Figure 1 As shown, it includes a first base plate 101, a first mounting plate 102 and a second mounting plate 103; the first mounting plate 102 and the second mounting plate 103 are arranged on the first base plate 101 and the first mounting plate 102 and the second mounting plate 103 are arranged in parallel; the first mounting plate 102 is used to fix one end of the microwave transmission line 300, and the second mounting plate 103 is used to fix the other end of the microwave transmission line 300.

[0054] In the present application, a microwave transmission line fixing device 100 is provided to fix the two ends of the microwave transmission line 300 to the first mounting plate 102 and the second mounting plate 103, and then the performance of the microwave transmission line 300 is tested. This operation ensures that the microwave transmission line 300 will not move or shake during the test, thereby ensuring the accuracy and consistency of the test results.

[0055] In some implementations of this embodiment, a first connector 500 is usually provided at both ends of the microwave transmission line 300. The first connector 500 can be directly fixed to the first mounting plate 102 or the second mounting plate 103 to fix the two ends of the microwave transmission line 300 to the first mounting plate 102 and the second mounting plate 103.

[0056] In other implementations of this embodiment, Figure 1 As shown: first connectors 500 are set at both ends of the microwave transmission line 300, and second connectors 104 are set on the first mounting plate 102 and the second mounting plate 103, and the first connector 500 and the second connector 104 are connected one-to-one; the input end and the output end of the microwave transmission line testing device 200 are electrically connected to the second connector 104 respectively.

[0057] By providing the first connector 500 and the second connector 104 , connections between the two ends of the microwave transmission line 300 and the first mounting board 102 and the second mounting board 103 are achieved.

[0058] Exemplarily, the first connector 500 and the second connector 104 are electrically connected in the form of a male head and a female head. For example, the first connector 500 is one of an SMA male head, an SMP male head, and an SMPM male head, and the second connector 104 is correspondingly one of an SMA female head, an SMP female head, and an SMPM female head; or the first connector 500 is one of an SMA female head, an SMP female head, and an SMPM female head, and the second connector 104 is correspondingly one of an SMA male head, an SMP male head, and an SMPM male head.

[0059] In some embodiments of the present embodiment, the first mounting plate 102 and the second mounting plate 103 can be provided in one of a circular shape, a square shape, a hexagonal shape, an L shape, and the like.

[0060] In some embodiments of the present embodiment, the microwave transmission line 300 to be tested includes a semi-rigid cable or a semi-flexible cable.

[0061] Based on the microwave transmission line fixing device 100 described above, the present application further provides a microwave transmission line testing tool, as shown in Figure 2 The microwave transmission line testing tool includes the microwave transmission line fixing device 100 and a microwave transmission line testing device 200, and the input end and the output end of the microwave transmission line testing device 200 are respectively connected to the two ends of the microwave transmission line 300. The performance of the microwave transmission line 300 is tested by the microwave transmission line testing device 200.

[0062] In some embodiments of the present embodiment, when only one second connector 104 is arranged on each of the first mounting plate 102 and the second mounting plate 103 in the microwave transmission line fixing device 100, the testing tool can test one microwave transmission line 300, as shown in Figure 2

[0063] In some other embodiments of the present embodiment, a plurality of second connectors 104 are arranged in an array on each of the first mounting plate 102 and the second mounting plate 103.

[0064] By arranging a plurality of second connectors 104 in an array on the first mounting plate 102 and the second mounting plate 103, several microwave transmission lines 300 can be tested at the same time. Specifically, the two ends of the several microwave transmission lines 300 are respectively fixed to the second connectors 104 on the first mounting plate 102 and the second mounting plate 103, and then a plurality of microwave transmission line testing devices 200 are used to measure each microwave transmission line 300 one by one, as shown in Figure 6 ​As shown; in addition, the entire microwave transmission line 300 can also be tested, and the two ends of each microwave transmission line 300 in the entire microwave transmission line 300 are respectively fixed to the second connector 104 of the first mounting plate 102 and the second mounting plate 103, and then the above-mentioned microwave transmission lines 300 are connected in series using a connecting line 400 (specifically, a third connector can be provided at both ends of the connecting line 400, and the third connector is connected to the first connector 500 at both ends of the microwave transmission line 300). Finally, a microwave transmission line testing device 200 is used to test the several microwave transmission lines 300 connected in series, as shown. Figure 7 shown.

[0065] Example 2

[0066] On the basis of Example 1, in order to make the test fixture of the present application adaptable to the test of microwave transmission lines 300 of different lengths, as shown in FIG. Figure 3 As shown, the microwave transmission line fixing device 100 in this embodiment further includes a transmission mechanism provided on the first base plate 101 , and the transmission mechanism is used to drive the second mounting plate 103 to move along the extension direction of the first base plate 101 .

[0067] By setting up a transmission mechanism, the second mounting plate 103 can be driven to move along the extension direction of the first base plate 101, thereby adjusting the distance between the two second connectors 104, thereby ensuring that the microwave transmission line fixing device 100 can be suitable for fixing microwave transmission lines 300 of different lengths.

[0068] In some implementations of this embodiment, Figure 3 As shown, the transmission mechanism includes a screw rod 105, a limiting rod 106, a nut block 107, a turntable 108, a first bearing seat 109 and a second bearing seat 110; the two ends of the screw rod 105 are respectively arranged in the first bearing seat 109 and the second bearing seat 110 through bearings; the two ends of the limiting rod 106 are respectively fixed on the first bearing seat 109 and the second bearing seat 110; the screw rod 105 and the limiting rod 106 are arranged in parallel, the nut block 107 is arranged on the screw rod 105, the second mounting plate 103 is fixed on the nut block 107, and the first mounting plate 102 is fixed on the first bearing seat 109 or the second bearing seat 110; the turntable 108 is fixed at one end face of the screw rod 105; the first bearing seat 109 and the second bearing seat 110 are arranged on the first base plate 101.

[0069] The transmission mechanism adopts a screw-nut mechanism. By rotating the turntable 108, the nut block 107 moves left and right, thereby driving the second mounting plate 103 to move left and right, and then adjusting the distance between the two second connectors 104, ensuring that the microwave transmission line fixing device 100 can be suitable for fixing microwave transmission lines 300 of different lengths.

[0070] In some implementations of this embodiment, the turntable 108 in the transmission mechanism is replaced with a motor, and the drive shaft of the motor is fixedly disposed at one end surface of the screw rod 105 .

[0071] By turning the turntable 108 into a motor and starting the motor, the rotation of the motor drives the screw 105 to rotate, so that the nut block 107 moves, thereby driving the second mounting plate 103 to move, and then adjusting the distance between the two second connectors 104, ensuring that the microwave transmission line fixing device 100 can be suitable for fixing microwave transmission lines 300 of different lengths.

[0072] In some embodiments of this embodiment, the microwave transmission line fixing device 100 also includes a first support seat 111 and a second support seat 112; wherein, the first bearing seat 109 is fixed to the first base plate 101 through the first support seat 111; the second bearing seat 110 is fixed to the first base plate 101 through the second support seat 112.

[0073] By providing the first support seat 111 and the second support seat 112 , the first bearing seat 109 and the second bearing seat 110 are fixed to the first base plate 101 , thereby fixing both ends of the limit rod 106 and the screw rod 105 to the first base plate 101 .

[0074] In some implementations of this embodiment, the first support seat 111 and the second support seat 112 have the same structure, both including a lower support clamp and an upper clamp, and the first bearing seat 109 or the second bearing seat 110 is clamped in a through hole formed at the covering position of the lower support clamp and the upper clamp; one end of the upper clamp is rotatably set on the lower support clamp, and the other end of the upper clamp is detachably fixed to the lower support clamp.

[0075] Through the above setting, the first bearing seat 109 is detachably mounted on the first support seat 111, and the second bearing seat 110 is detachably mounted on the second support seat 112. When the microwave transmission line 300 needs to be tested in a liquid nitrogen environment, the microwave transmission line 300 can be mounted on the first mounting plate 102 and the second mounting plate 103, and then the first bearing seat 109 and the first support seat 111 and the second bearing seat 110 and the second support seat 112 are disassembled. The microwave transmission line fixing device 100 except the first support seat 111, the second support seat 112 and the first bottom plate 101 is put into the liquid nitrogen environment, so that the first support seat 111, the second support seat 112 and the first bottom plate 101 do not need to be put into the liquid nitrogen.

[0076] In some embodiments of the present embodiment, a lifting ring 113 is arranged on the first bearing seat 109 or the second bearing seat 110.

[0077] By arranging the lifting ring 113, the test tool can be placed in a liquid nitrogen environment. Specifically, a rod is passed through the lifting ring 113, and then the two ends of the rod are placed at the mouth of the liquid nitrogen tank, so that the test tool is placed in the liquid nitrogen.

[0078] In some embodiments of the present embodiment, a scale line is arranged on the limiting rod 106.

[0079] By arranging the scale line, the distance between the first mounting plate 102 and the second mounting plate 103 can be accurately known, so that the length of the microwave transmission line 300 suitable for testing can be known.

[0080] In some embodiments of the present embodiment, the microwave transmission line testing device 200 is a vector network analyzer.

[0081] By using the vector network analyzer, electrical parameters such as loss, gain, standing wave, SRE, etc. can be tested.

[0082] In some embodiments of the present embodiment, the limiting rod 106 is provided in two, and the two limiting rods 106 are arranged on both sides of the lead screw 105 and arranged in parallel.

[0083] In some embodiments of the present embodiment, as shown in Figure 4As shown, the specific structure of the first bearing seat 109 is as follows: it includes a first seat body 1091 and a second seat body 1092. The first seat body 1091 is provided with a first mounting hole 1093 and a second mounting hole 1094. The first mounting hole 1093 is used to install the limit rod 106. The second mounting hole 1094 is provided with a bearing, and the screw rod 105 is placed in the bearing. The second seat body 1092 is provided with a third mounting hole, which is connected to the second mounting hole 1094. The screw rod 105 extends out of the third mounting hole and is fixed to the turntable 108 or the output shaft of the motor. Furthermore, the first mounting plate 102 is fixed in the seventh mounting hole 1095 at the end face of the first seat body 1091. Specifically, the first mounting plate 102 is detachably fixed to the end face of the first seat body 1091 by screws. Specifically, the second seat body 1092 is a cylinder, which is clamped in the first support seat 111.

[0084] like Figure 5 As shown, the specific structure of the second bearing seat 110 is as follows: it includes a third seat body 1101 and a fourth seat body 1102. The third seat body 1101 is provided with a fourth mounting hole 1103 and a fifth mounting hole 1104. The fourth mounting hole 1103 is used to install the limit rod 106. The fifth mounting hole 1104 is provided with a bearing, and the screw rod 105 is placed in the bearing. The fourth seat body 1102 is provided with a sixth mounting hole, which is used to install the lifting ring 113. Specifically, the sixth mounting hole is a threaded hole, and the lifting ring 113 is provided with a screw that matches the threaded hole. Specifically, the fourth seat body 1102 is a cylinder, which is clamped within the second support seat 112.

[0085] Example 3

[0086] like Figure 8 As shown, the method for testing the microwave transmission line 300 using the test fixture in Example 1 or Example 2 includes the following steps:

[0087] S1: Fix the two ends of the microwave transmission line 300 to the first mounting plate 102 and the second mounting plate 103 of the microwave transmission line fixing device 100 respectively;

[0088] S2: connecting the input and output ends of the microwave transmission line testing device 200 to the two ends of the microwave transmission line 300 respectively;

[0089] S3 uses the microwave transmission line testing device 200 to test the electrical parameters of the microwave transmission line 300 .

[0090] Specifically, the above test method can be used to test a single microwave transmission line 300, or to test the entire microwave transmission line 300 (the entire microwave transmission line 300 refers to multiple microwave transmission lines 300 in a microwave control circuit). It can also be used to test multiple microwave transmission lines 300 using multiple microwave transmission line test devices 200. The specific test methods are described in detail as follows:

[0091] 1. A method for testing a microwave transmission line 300 includes the following steps:

[0092] The two ends of a microwave transmission line 300 were fixed to the first mounting plate 102 and the second mounting plate 103 of the microwave transmission line fixture 100, respectively. Specifically, the first connectors 500 at both ends of the microwave transmission line 300 were fixed to the second connectors 104 on the first mounting plate 102 and the second mounting plate 103, respectively. To further ensure consistency in the test results, the torque applied during the installation of each first connector 500 and the second connector 104 was the same.

[0093] Connecting the input and output ends of the microwave transmission line testing device 200 to the two ends of the fixed microwave transmission line 300 respectively;

[0094] The microwave transmission line testing device 200 is used to test the electrical parameters of the microwave transmission line 300 .

[0095] 2. A method for testing the entire microwave transmission line 300 includes the following steps:

[0096] The ends of multiple microwave transmission lines 300 were respectively fixed to the first mounting plate 102 and the second mounting plate 103 of the microwave transmission line fixture 100. Specifically, the first connectors 500 at both ends of each microwave transmission line 300 were respectively fixed to the second connectors 104 on the first mounting plate 102 and the second mounting plate 103. To further ensure the consistency of the test results, the torque during installation of each first connector 500 and the second connector 104 was the same.

[0097] The plurality of microwave transmission lines 300 are connected in series using a connecting line 400;

[0098] Connecting the input and output ends of the microwave transmission line testing device 200 to the two ends of the series-connected microwave transmission line 300 respectively;

[0099] The microwave transmission line testing device 200 is used to test the electrical parameters of the microwave transmission line 300 .

[0100] 3. A method for testing a plurality of microwave transmission lines 300 using a plurality of microwave transmission line fixtures 100 includes the following steps:

[0101] The ends of a plurality of microwave transmission lines 300 are respectively fixed to the first mounting plate 102 and the second mounting plate 103 of the microwave transmission line fixing device 100. Specifically, the first connectors 500 at both ends of each microwave transmission line 300 are respectively fixed to the second connectors 104 on the first mounting plate 102 and the second mounting plate 103. To further ensure the consistency of the test results, the torque during installation of each first connector 500 and the second connector 104 is the same;

[0102] Connecting the input and output ends of the microwave transmission line testing device 200 to the two ends of the fixed microwave transmission line 300 respectively;

[0103] The microwave transmission line test device 200 is used to test the electrical parameters of the microwave transmission line 300 , wherein each microwave transmission line 300 corresponds to one microwave transmission line test device 200 .

[0104] The above three test methods can be performed at room temperature or in liquid nitrogen environment, depending on actual needs.

[0105] Furthermore, when the microwave transmission line fixture 100 in the test fixture includes a transmission mechanism, the following step is added to the above three methods: the transmission mechanism drives the second mounting plate 103 to move along the extension direction of the first base plate 101, thereby adjusting the distance between the two second connectors 104 to meet the length requirements of the microwave transmission line 300 to be tested. By adding this step, the test method of this embodiment can be applied to microwave transmission lines 300 of different lengths.

[0106] In the description of this specification, reference to the terms "some embodiments" or "examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0107] The above is only a preferred embodiment of the present application and does not limit the present application in any way. Any person skilled in the art who, without departing from the scope of the technical solution of the present application, makes any equivalent substitution or modification to the technical solution and technical content disclosed in the present application shall be deemed to have not departed from the content of the technical solution of the present application and shall still fall within the scope of protection of the present application.

Claims

1. A microwave transmission line fixing device, characterized in that: It comprises a first bottom plate (101), a first mounting plate (102), a second mounting plate (103) and a connecting line (400); The first mounting plate (102) and the second mounting plate (103) are arranged on the first base plate (101), and the first mounting plate (102) and the second mounting plate (103) are arranged in parallel; First connectors (500) are provided at both ends of the microwave transmission line (300), and a plurality of second connectors (104) are provided on both the first mounting plate (102) and the second mounting plate (103), and the first connectors (500) and the second connectors (104) are connected in a one-to-one correspondence so that the first mounting plate (102) is used to fix one end of the microwave transmission line (300), and the second mounting plate (103) is used to fix the other end of the microwave transmission line (300); A third connector is provided at both ends of the connecting line (400); the third connectors at both ends of the connecting line (400) are electrically connected to the first connector so that the two microwave transmission lines (300) are connected in series.

2. The microwave transmission line fixing device according to claim 1, characterized in that: It also includes a transmission mechanism arranged on the first base plate (101), and the transmission mechanism is used to drive the second mounting plate (103) to move along the extension direction of the first base plate (101).

3. The microwave transmission line fixing device according to claim 2, characterized in that: The transmission mechanism comprises a screw rod (105), a limiting rod (106), a nut block (107), a rotating disk (108), a first bearing seat (109) and a second bearing seat (110); The two ends of the screw rod (105) are respectively arranged in the first bearing seat (109) and the second bearing seat (110) through bearings; the two ends of the limiting rod (106) are respectively fixed on the first bearing seat (109) and the second bearing seat (110); The screw rod (105) and the limiting rod (106) are arranged in parallel, the nut block (107) is arranged on the screw rod (105), the second mounting plate (103) is fixed on the nut block (107), and the first mounting plate (102) is fixed on the first bearing seat (109) or the second bearing seat (110); the turntable (108) is arranged at one end surface of the screw rod (105); The first bearing seat (109) and the second bearing seat (110) are arranged on the first base plate (101).

4. The microwave transmission line fixing device according to claim 3, characterized in that: The turntable (108) in the transmission mechanism is replaced with a motor.

5. The microwave transmission line fixing device according to claim 3, characterized in that: A lifting ring (113) is provided on the first bearing seat (109) or the second bearing seat (110).

6. The microwave transmission line fixing device according to claim 3, characterized in that: The limiting rod (106) is provided with a scale line.

7. A microwave transmission line test fixture, characterized in that: Comprising a microwave transmission line testing device (200) and a microwave transmission line fixing device (100) according to any one of claims 1 to 6; The input end and the output end of the microwave transmission line testing device (200) are respectively connected to the two ends of the microwave transmission line (300).

8. The microwave transmission line test fixture according to claim 7, characterized in that: The microwave transmission line testing device (200) comprises a vector network analyzer.

9. A method for testing a microwave transmission line using the test fixture according to any one of claims 7-8, characterized in that: The steps include: Fixing the two ends of the microwave transmission line (300) to the first mounting plate (102) and the second mounting plate (103) of the microwave transmission line fixing device (100) respectively; connecting the input end and the output end of the microwave transmission line testing device (200) to the two ends of the microwave transmission line (300) respectively; The microwave transmission line testing device (200) is used to test the electrical parameters of the microwave transmission line (300).

10. The testing method according to claim 9, characterized in that: When used to test a single microwave transmission line (300) or each of the microwave transmission lines (300) in a plurality of microwave transmission lines (300), the number of the microwave transmission lines (300) corresponds one-to-one to the number of the microwave transmission line test devices (200), and both ends of each microwave transmission line (300) are respectively connected to the input end and the output end of one of the microwave transmission line test devices (200).

11. The testing method according to claim 10, characterized in that: When used to test the entire microwave transmission line (300), the method comprises the following steps: respectively fixing the two ends of each microwave transmission line (300) in the entire microwave transmission line (300) on the first mounting plate (102) and the second mounting plate (103) of the microwave transmission line fixing device (100); The microwave transmission lines (300) are connected in series using a connecting line (400); connecting the input end and the output end of the microwave transmission line testing device (200) to two ends of the series-connected microwave transmission line (300) respectively; The microwave transmission line testing device (200) is used to test the electrical parameters of the entire microwave transmission line (300).

12. The testing method according to claim 9, wherein: The test method is carried out at room temperature or in liquid nitrogen environment.

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