Test tool for directional coupler

Abstract

The utility model discloses a test tool for a directional coupler, and belongs to the technical field of coupler detection tools. The device comprises a bottom plate, a plurality of positioning fixture blocks and positioning contacts are arranged on the bottom plate; a workpiece is detachably clamped on the positioning clamping block, and two straight-through pins and two coupling pins on the workpiece are connected with the corresponding positioning contacts; the positioning contact is made of a conductive material, and the other end of the positioning contact is connected with the radio frequency connector; the number of the radio frequency connectors is correspondingly four. A grounding point is also arranged on the bottom plate; the grounding point is connected with the positioning contact; according to the utility model, when each electrical performance index of the directional coupler workpiece is tested, the working efficiency of operators can be improved, and the operation difficulty can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of coupler testing fixture technology, specifically to a testing fixture for directional couplers. Background Technology

[0002] A directional coupler is a versatile microwave / millimeter-wave component used for signal isolation, separation, and mixing, such as power monitoring, source output power stabilization, signal source isolation, and frequency sweep testing of transmission and reflection. Key technical specifications include directivity, VSWR, coupling strength, and insertion loss. During research and development and production, it is necessary to conduct product quality testing on the electrical performance indicators of this directional coupler. To improve development and production efficiency, it is essential to design a new rapid testing fixture for directional couplers. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a test fixture for directional couplers, so as to improve the work efficiency of operators and reduce the difficulty of operation when testing various electrical performance indicators of directional coupler workpieces.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A test fixture for a directional coupler includes a base plate; several positioning blocks and positioning contacts are provided on the base plate; a workpiece is detachably mounted on the positioning blocks, and two through pins and two coupling pins on the workpiece are connected to the corresponding positioning contacts; the positioning contacts are made of conductive material, and the other end of the positioning contacts is connected to an RF connector; four RF connectors are provided; a grounding point is also provided on the base plate; the grounding point is connected to the positioning contacts.

[0006] Preferably, a cover plate is also provided on the base plate, with a rectangular window in the middle of the cover plate; the size of the window is consistent with the size of the workpiece; the cover plate is set above the positioning block and positioning contact on the side away from the window; the thickness of the cover plate is less than the thickness of the workpiece.

[0007] Preferably, the base plate is a pentagonal flat plate structure spliced ​​from a rectangular plate and an isosceles triangle; the four RF connectors are respectively located at the two hypotenuses of the two base plates and at the two right-angled sides adjacent to the hypotenuses.

[0008] Preferably, the base plate is a double-layer PCB board; the grounding terminal of the PCB board is the grounding point on the base plate.

[0009] Preferably, the RF connector is a four-pin male RF connector; its upper and lower rows of pins are respectively clamped to the side of the base plate.

[0010] Preferably, a total of 12 positioning blocks are provided, and the positioning slots on the workpiece are arranged in a rectangular shape; three positioning blocks are located on the upper side, four positioning blocks are arranged symmetrically on the left and right sides in two groups, and the remaining five positioning blocks are located on the lower side.

[0011] The beneficial effects of this utility model are reflected in the following aspects:

[0012] 1. By connecting the components with this fixture, there is no need to weld the directional coupler product before testing, thus ensuring the product's appearance and enabling non-destructive testing;

[0013] 2. The RF connector connects directly to the test fixture, eliminating the need to change the interface during testing. This improves operational efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention in an embodiment;

[0015] Figure 2 yes Figure 1 Rear view of the device;

[0016] Figure 3 This is a schematic diagram of the structure of the workpiece to be positioned in this embodiment;

[0017] Explanation of reference numerals in the attached diagram: 1. Base plate, 2. Positioning clip, 3. Positioning contact, 4. Workpiece, 5. RF connector, 6. Cover plate, 6A. Window. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] Example:

[0020] Reference Figure 1 This embodiment provides a test fixture for a directional coupler; it includes a base plate 1; several positioning blocks 2 and positioning contacts 3 are provided on the base plate 1; a workpiece 4 is detachably mounted on the positioning blocks 2, and two through pins and two coupling pins on the workpiece 4 are connected to the corresponding positioning contacts 3; the positioning contacts 3 are made of conductive material, and the other end of the positioning contacts 3 is connected to an RF connector 5; four RF connectors 5 are provided; a grounding point is also provided on the base plate 1; the grounding point is connected to the positioning contacts 3. In this embodiment, a total of four positioning contacts 3 are provided.

[0021] A cover plate 6 is also provided on the base plate 1; a rectangular window 6A is opened in the middle of the cover plate 6; the size of the window 6A is consistent with the size of the workpiece 4; the cover plate 6 is set above the positioning block 2 and the positioning contact 3 on the side away from the window 6A; the thickness of the cover plate 6 is less than the thickness of the workpiece 4.

[0022] The base plate 1 is a pentagonal flat plate structure composed of a rectangular plate and an isosceles triangle; four radio frequency connectors 5 are respectively located at the two hypotenuses of the two base plates 1 and at the two right-angled sides adjacent to the hypotenuses.

[0023] The base plate 1 is a double-layer PCB board; the grounding terminal of the PCB board is the grounding point on the base plate 1.

[0024] The RF connector 5 is a four-pin male RF connector; its upper and lower rows of pins are respectively clamped to the side of the base plate 1.

[0025] There are a total of 12 positioning blocks 2, which correspond to the positioning grooves on the workpiece 4 in a rectangular arrangement; three positioning blocks 2 are located on the upper side, four positioning blocks 2 are arranged symmetrically in two groups on the left and right sides, and the remaining five positioning blocks 2 are located on the lower side.

[0026] When using the utility model device in this embodiment, simply lay the base plate flat and insert the workpiece through the window on the cover plate 6. Ensure that the workpiece can be engaged with the corresponding positioning blocks and positioning contacts through the slots, through pins, and two coupling pins. Then, connect the RF connector to the analyzer to test the workpiece.

Claims

1. A test fixture for a directional coupler, characterized in that: It includes a base plate (1); a number of positioning blocks (2) and positioning contacts (3) are provided on the base plate (1); the workpiece (4) is detachably mounted on the positioning blocks (2), and the two through pins and two coupling pins on the workpiece (4) are connected to the corresponding positioning contacts (3); the positioning contacts (3) are made of conductive material, and the other end of the positioning contacts (3) is connected to the radio frequency connector (5); four radio frequency connectors (5) are provided accordingly; a grounding point is also provided on the base plate (1); the grounding point is connected to the positioning contacts (3).

2. The test fixture for a directional coupler according to claim 1, characterized in that: A cover plate (6) is also provided on the base plate (1); a rectangular window (6A) is opened in the middle of the cover plate (6); the size of the window (6A) is consistent with the size of the workpiece (4); the cover plate (6) is set above the positioning block (2) and the positioning contact (3) on the side away from the window (6A); the thickness of the cover plate (6) is less than the thickness of the workpiece (4).

3. The test fixture for a directional coupler according to claim 1, characterized in that: The base plate (1) is a pentagonal flat plate structure made up of a rectangular plate and an isosceles triangle; four radio frequency connectors (5) are respectively set at the two hypotenuses of the two base plates (1) and the two right-angled sides adjacent to the hypotenuses.

4. The test fixture for a directional coupler according to claim 1, characterized in that: The base plate (1) is a double-layer PCB board; the grounding terminal of the PCB board is the grounding point on the base plate (1).

5. The test fixture for a directional coupler according to claim 1, characterized in that: The RF connector (5) is a four-pin male RF connector; The upper and lower rows of pins are respectively clamped to the side of the base plate (1) for setting.

6. The test fixture for a directional coupler according to claim 1, characterized in that: There are 12 positioning blocks (2) in total, and the positioning slots on the workpiece (4) are arranged in a rectangular shape. Three positioning blocks (2) are set on the upper side, four positioning blocks (2) are divided into two groups and symmetrically set on the left and right sides, and the remaining five positioning blocks (2) are set on the lower side.

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