A test fixture for a vector network analyzer

Abstract

This utility model relates to the field of vector network analyzer technology and discloses a test fixture for a vector network analyzer, including a vector network analyzer body and a base plate, and further including: a placement plate fixed to one side of the top of the base plate, a fixture plate provided on the top of the placement plate, a positioning shell fixedly connected to one side of the placement plate, and a fixture assembly provided in the inner cavity of the positioning shell. By setting the fixture assembly, the cable to be tested is placed in the inner cavity of the placement plate and contacts the buffer plate, then the inner cavity of the cable is inserted into the surface of the output port, and then the fixture plate is pressed down. Simultaneously, as the fixture plate presses down, a second clamping plate is inserted into the inner cavity of the positioning shell. At the same time, as the fixture plate presses down, a slider is moved in the inner cavity of the limiting groove for auxiliary limiting movement. At that time, the second clamping plate engages with the first clamping plate, and a first spring provides buffer support during engagement with the first clamping plate.

Description

Technical Field

[0001] This utility model relates to the field of vector network analyzer technology, specifically a test fixture for a vector network analyzer. Background Technology

[0002] A vector network analyzer is an instrument used to measure the characteristics of radio frequency and microwave signals, especially for analyzing the transmission characteristics of networks, such as reflection, transmission, and impedance. It helps engineers evaluate the performance of components and systems by measuring signals at different frequencies.

[0003] When testing cables using a vector network analyzer, it is usually necessary to connect the cables to the testing instrument via a connector cable for accurate testing. Typically, the connector cable and the cable are fixed together by a threaded connection. However, this method is very inconvenient in practice, especially when testing a large number of cables. Each cable needs to be tightened individually, which not only consumes a lot of time but may also cause wear or damage to the connector cable, thus affecting the accuracy of subsequent tests. Utility Model Content

[0004] The purpose of this invention is to provide a test fixture for a vector network analyzer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test fixture for a vector network analyzer, comprising a vector network analyzer body and a base plate, and further comprising: A placement plate is fixed to one side of the top of the base plate. A clamping plate is provided on the top of the placement plate. A positioning shell is fixedly connected to one side of the placement plate. A clamping assembly is provided in the inner cavity of the positioning shell. The clamping assembly includes a pull rod, a first clamping plate, and a second clamping plate. A connecting plate is fixed to one side of the top of the base plate. One side of the connecting plate is electrically connected to a connecting wire. One side of the connecting wire is electrically connected to the vector network analyzer body. One side of the connecting wire is electrically connected to an output port.

[0006] Preferably, one side of the pull rod is inserted into the inner cavity of the positioning shell, one side of the pull rod is fixedly connected to the first clamping plate, one side of the first clamping plate is engaged with the second clamping plate, and one side of the second clamping plate extends through to the outer wall of the positioning shell and is fixedly connected to the clamping plate.

[0007] Preferably, a first spring is fixedly connected to each of the four corners on one side of the first card plate, and one side of the first spring is fixedly connected to the inner wall of the positioning shell.

[0008] Preferably, both ends of the first card plate are fixedly connected to sliding sleeves, and the inner cavity of the sliding sleeve is fitted with a sliding rod, and both sides of the sliding rod are fixedly connected to the inner wall of the positioning shell.

[0009] Preferably, a second spring is fixedly connected to both sides of the inner wall of the placement plate and the clamping plate, and a buffer plate is fixedly connected to the bottom of the second spring, with the surface of the buffer plate in contact with the cable.

[0010] Preferably, a limiting groove is formed on one side of the placement plate, and a slider is fixedly connected to one side of the clamping plate, with the surface of the slider inserted into the inner cavity of the limiting groove.

[0011] Preferably, support plates are fixedly connected to both sides of the connecting plate, and the bottom of the support plates is fixedly connected to the base plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a clamping assembly to place the cable to be tested into the inner cavity of the placement plate, where it contacts the buffer plate. The inner cavity of the cable is then inserted into the surface of the output port. The clamping plate is then pressed downwards, simultaneously causing the second clamping plate to insert into the inner cavity of the positioning shell. At the same time, the clamping plate's downward pressure causes the slider to move within the limiting groove for auxiliary limiting movement. The second clamping plate then engages with the first clamping plate. Simultaneously, a first spring provides cushioning and support, moving the first clamping plate. This movement of the first clamping plate also causes the sliding sleeve to move stably against the surface of the sliding rod, ultimately securing the first and second clamping plates together to firmly clamp and fix the cable. This effectively provides convenient clamping and fixing of the cable to be tested. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the test fixture for a vector network analyzer provided by this utility model; Figure 2 A schematic diagram of the unfolded structure provided by this utility model; Figure 3 A schematic diagram of the fixture assembly structure provided by this utility model; Figure 4 A schematic diagram of the limiting groove structure provided by this utility model.

[0014] In the diagram: 1. Vector network analyzer body; 2. Base plate; 3. Placement plate; 4. Fixture plate; 5. Positioning shell; 6. Fixture assembly; 601. Pull rod; 602. First clamping plate; 603. Second clamping plate; 604. First spring; 605. Sliding sleeve; 606. Sliding rod; 7. Connecting plate; 8. Connecting wire; 9. Output port; 10. Second spring; 11. Buffer plate; 12. Limiting groove; 13. Slider; 14. Support plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 As shown, a test fixture for a vector network analyzer includes a vector network analyzer body 1 and a base plate 2, and further includes: A placement plate 3 is fixed to one side of the top of the base plate 2. A clamping plate 4 is provided on the top of the placement plate 3. A positioning shell 5 is fixedly connected to one side of the placement plate 3. A clamping assembly 6 is provided in the inner cavity of the positioning shell 5. The clamping assembly 6 includes a pull rod 601, a first clamping plate 602, and a second clamping plate 603.

[0017] One side of the pull rod 601 is inserted into the inner cavity of the positioning shell 5. One side of the pull rod 601 is fixedly connected to the first clamping plate 602. One side of the first clamping plate 602 is engaged with the second clamping plate 603. One side of the second clamping plate 603 extends through to the outer wall of the positioning shell 5 and is fixedly connected to the clamping plate 4. Four first springs 604 are fixedly connected to the four corners of one side of the first clamping plate 602. One side of the first springs 604 is fixedly connected to the inner wall of the positioning shell 5. Sliding sleeves 605 are fixedly connected to both ends of the first clamping plate 602. The inner cavity of the sliding sleeves 605 is fitted with… A sliding rod 606 is provided, with both sides of the sliding rod 606 fixedly connected to the inner wall of the positioning shell 5. Second springs 10 are fixedly connected to both sides of the inner walls of the placement plate 3 and the clamping plate 4. Buffer plates 11 are fixedly connected to the bottom of each second spring 10, and the surfaces of the buffer plates 11 are in contact with the cable. A limiting groove 12 is provided on one side of the placement plate 3, and a slider 13 is fixedly connected to one side of the clamping plate 4. The surface of the slider 13 is inserted into the inner cavity of the limiting groove 12. When it is necessary to clamp and fix the cable to be tested, the cable to be tested is first placed in the placement plate 606. The inner cavity of plate 3 contacts the buffer plate 11, and the inner cavity of the cable is then inserted into the surface of the output port 9. The clamp plate 4 is then pressed downwards, causing the second clamping plate 603 to be inserted into the inner cavity of the positioning shell 5. Simultaneously, the clamp plate 4 presses down, causing the slider 13 to move within the limiting groove 12 for auxiliary limiting. At this point, the second clamping plate 603 engages with the first clamping plate 602. While engaging with the first clamping plate 602, the first spring 604 provides cushioning support. 04. While supporting, the first clamping plate 602 is moved. As the first clamping plate 602 moves, the sliding sleeve 605 moves stably on the surface of the sliding rod 606. Then, the first clamping plate 602 and the second clamping plate 603 are firmly engaged. At this time, the placement plate 3 and the clamping plate 4 are merged. While merging, they come into contact with the buffer plate 11, and the second spring 10 is used to buffer and clamp the cable, so that the cable is clamped and firmly secured. This can effectively clamp and fix the cable to be tested.

[0018] A connecting plate 7 is fixed to one side of the top of the base plate 2. A connecting line 8 is electrically connected to one side of the connecting plate 7. One side of the connecting line 8 is electrically connected to the vector network analyzer body 1. An output port 9 is electrically connected to one side of the connecting line 8.

[0019] Support plates 14 are fixedly connected to both sides of the connecting plate 7, and the bottom of the support plate 14 is fixedly connected to the base plate 2. The support plate 14 can effectively enhance the strength of the support plate 14, thereby ensuring its stability and durability after long-term use.

[0020] Working principle: First, the cable to be tested is placed in the inner cavity of the placement plate 3 and contacts the buffer plate 11. Then, the inner cavity of the cable is inserted into the surface of the output port 9. Next, the clamp plate 4 is pressed down. As the clamp plate 4 is pressed down, the second clamping plate 603 is inserted into the inner cavity of the positioning shell 5. At the same time, as the clamp plate 4 is pressed down, the slider 13 moves in the inner cavity of the limiting groove 12 for auxiliary limiting movement. At this time, the second clamping plate 603 engages with the first clamping plate 602. While engaging with the first clamping plate 602, the first spring 604 provides buffer support. As the first spring 604 supports, the first clamping plate 602 moves. While the first clamping plate 602 moves, the sliding sleeve 605 moves on the surface of the sliding rod 606 for auxiliary stabilization. Then, the first clamping plate 602 and the second clamping plate 603 are firmly engaged. At this time, the placement plate 3 and the clamping plate 4 merge. At the same time as merging, the second clamping plate 603 engages with the buffer plate 11. 1. Make contact and use the second spring 10 to buffer and clamp the cable, thus clamping and securing the cable firmly. This effectively provides a convenient clamping and fixing effect for the cable to be tested. Then, open the Vector Network Analyzer 1 and electrically connect it to the connecting cable 8 through the output port 9. The cable data is transmitted through the output port 9 to the connecting cable 8, and then through the connecting cable 8 to the Vector Network Analyzer 1. The Vector Network Analyzer 1 performs data testing on the cable. It should be noted that the working principle of the Vector Network Analyzer 1 (VNA) is mainly based on measuring and analyzing the scattering parameters (S-parameters) of the signal, that is, the reflection and transmission characteristics of the network at different frequencies. Specifically, the VNA transmits a known radio frequency signal to the device under test and measures the reflection and transmission characteristics of the signal to deduce various parameters of the DUT. This technology is common knowledge to those skilled in the art and will not be elaborated further here.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test fixture for a vector network analyzer, comprising a vector network analyzer body (1) and a base plate (2), characterized in that, Also includes: A placement plate (3) is fixed to one side of the top of the base plate (2). A clamping plate (4) is provided on the top of the placement plate (3). A positioning shell (5) is fixedly connected to one side of the placement plate (3). A clamping assembly (6) is provided in the inner cavity of the positioning shell (5). The clamping assembly (6) includes a pull rod (601), a first clamping plate (602), and a second clamping plate (603). A connecting plate (7) is fixed to one side of the top of the base plate (2). A connecting line (8) is electrically connected to one side of the connecting plate (7). One side of the connecting line (8) is electrically connected to the vector network analyzer body (1). An output port (9) is electrically connected to one side of the connecting line (8).

2. The test fixture for a vector network analyzer according to claim 1, characterized in that: One side of the pull rod (601) is inserted into the inner cavity of the positioning shell (5). One side of the pull rod (601) is fixedly connected to the first clamping plate (602). One side of the first clamping plate (602) is engaged with the second clamping plate (603). One side of the second clamping plate (603) extends through to the outer wall of the positioning shell (5) and is fixedly connected to the clamping plate (4).

3. A test fixture for a vector network analyzer according to claim 2, characterized in that: Each of the four corners of one side of the first card plate (602) is fixedly connected with a first spring (604), and one side of the first spring (604) is fixedly connected to the inner wall of the positioning shell (5).

4. A test fixture for a vector network analyzer according to claim 2, characterized in that: Both ends of the first card plate (602) are fixedly connected to a sliding sleeve (605), and a sliding rod (606) is sleeved in the inner cavity of the sliding sleeve (605). Both sides of the sliding rod (606) are fixedly connected to the inner wall of the positioning shell (5).

5. A test fixture for a vector network analyzer according to claim 4, characterized in that: The inner walls of the placement plate (3) and the clamp plate (4) are both fixedly connected with a second spring (10), and the bottom of the second spring (10) is fixedly connected with a buffer plate (11). The surface of the buffer plate (11) is in contact with the cable.

6. A test fixture for a vector network analyzer according to claim 1, characterized in that: A limiting groove (12) is provided on one side of the placement plate (3), and a slider (13) is fixedly connected to one side of the clamp plate (4). The surface of the slider (13) is inserted into the inner cavity of the limiting groove (12).

7. A test fixture for a vector network analyzer according to claim 1, characterized in that: Both sides of the connecting plate (7) are fixedly connected to the support plate (14), and the bottom of the support plate (14) is fixedly connected to the base plate (2).

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