CN216926870U

CN216926870U - Test fixture of frequency conversion module

Info

Publication number: CN216926870U
Application number: CN202123078150.9U
Authority: CN
Inventors: 董江; 董良; 张强
Original assignee: Chengdu Guoqiang Yuxing Electronic Technology Co ltd
Current assignee: Chengdu Guoqiang Yuxing Electronic Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-08
Anticipated expiration: 2031-12-09

Abstract

The utility model relates to a test fixture of a frequency conversion module, which comprises a bottom plate, a test seat and a pressure plate assembly, wherein the test seat is installed on the bottom plate, the upper end surface of the test seat is provided with a PCB (printed circuit board), the upper end surface of the PCB is provided with a microstrip line and a reed, the reed is electrically connected with the microstrip line, the pressure plate assembly comprises a fixing frame, a pressure plate and a pressing block, the fixing frame is detachably installed on the bottom plate, the pressing block is movably installed in the fixing frame, the pressing block is positioned right above the test seat and movably abutted against the test seat, the pressure plate is movably installed on one side of the fixing frame, which is far away from the test seat, and the pressure plate is connected with the pressing block. According to the utility model, the reed is matched with the microstrip line and is contacted with the pin of the frequency conversion module, so that the coaxial transmission of radio frequency signals is realized, the pin does not need to be welded, the pin of the frequency conversion module can be well contacted with the reed by utilizing the pressing plate assembly, the solderless test of the frequency conversion module to be tested is realized, and the test cost is saved.

Description

Test fixture of frequency conversion module

Technical Field

The utility model relates to the technical field of frequency conversion module testing, in particular to a test fixture for a frequency conversion module.

Background

Along with the development of microwave technique, the frequency conversion module volume is littleer and more, it is more and more obvious to integrate the trend, this passageway that just lets multichannel frequency conversion module becomes more and more, the interface distribution of frequency conversion module is in different faces, it is loaded down with trivial details to lead to the concurrent test, current test fixture has only considered the test demand of single test interface, can't accurately draw the microwave parameter of this type of frequency conversion module, and when adopting microstrip circuit and gold wire ball bonding to test and draw, can make the unable reuse of product after the test and sell. If a pressing block or a pressing rod with low dielectric constant is adopted, the pin of the frequency conversion module is well pressed with the microstrip circuit for testing. The method has poor test accuracy and stability and has considerable limitation.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a test fixture for a frequency conversion module aiming at the conditions that the existing frequency conversion module has low test accuracy, poor stability and considerable limitation.

The utility model provides a frequency conversion module's test fixture, includes the bottom plate, test seat and clamp plate assembly, the test seat is installed on the bottom plate, the test seat up end is provided with the PCB board, PCB board up end is provided with microstrip line and reed, the reed with the microstrip line electricity is connected, clamp plate assembly includes the mount, clamp plate and briquetting, mount demountable installation is in on the bottom plate, briquetting movable mounting be in the mount, the briquetting be located directly over the test seat and with test seat movable butt, clamp plate movable mounting be in the mount deviates from one side of test seat, the clamp plate with the briquetting is connected.

Preferably, the reed is in a U shape formed by connecting a bottom sheet and a spring sheet, the end part of the spring sheet inclines to one side back to the bottom sheet, and a blocking piece is arranged at the edge part of the inner side of the bottom sheet.

Preferably, a connector is arranged on the edge of the test seat, and the connector is electrically connected with the reed through the microstrip line.

Preferably, the connector is connected with the test socket through an adapter plate.

Preferably, the upper end face of the test seat is provided with a groove.

Preferably, two positioning pins are arranged on the edge of the bottom plate, four supporting columns are arranged on the corners of the fixing frame, and the two supporting columns are movably connected with the positioning pins.

Preferably, two hand screws are further arranged on the edge portion of the bottom plate, and the two hand screws penetrate through the supporting column and are connected with the bottom plate.

The utility model has the advantages that: the reed is matched with the microstrip line and is in contact with the pin of the frequency conversion module, the coaxial transmission of radio frequency signals is realized, the pin does not need to be welded, the frequency conversion module is positioned between the pressing plate assembly and the test seat, the pin of the frequency conversion module can be in good contact with the reed by utilizing the pressing plate assembly, the non-welding test of the frequency conversion module to be tested is realized, the test is simple, the test cost is saved, the characteristic of extremely low loss is realized, and the microwave parameters of the frequency conversion module can be more accurately tested.

Drawings

FIG. 1 is a schematic perspective view of a test fixture of a frequency conversion module according to an embodiment;

FIG. 2 is a perspective view of a reed;

FIG. 3 is an exploded view of a test fixture for a frequency conversion module;

fig. 4 is an enlarged view of a portion a of fig. 3.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-4, a test fixture of frequency conversion module, includes bottom plate 1, test seat 2 and clamp plate assembly 3, test seat 2 is installed on bottom plate 1, test seat 2 up end is provided with PCB 4, PCB 4 up end is provided with microstrip line 41 and reed 42, reed 42 with microstrip line 41 electricity is connected, clamp plate assembly 3 includes mount 31, clamp plate 32 and briquetting 33, mount 31 demountable installation is in on bottom plate 1, briquetting 33 movable mounting be in mount 31, briquetting 33 is located directly over test seat 2 and with test seat 2 activity butt, clamp plate 32 movable mounting be in mount 31 deviates from one side of test seat 2, clamp plate 32 with briquetting 33 is connected. Specifically, in this embodiment, a frequency conversion module (not shown in the figure) to be tested is placed on the upper end surface of the test socket 2, and the edge pin of the frequency conversion module contacts with the reed 42, so that when the PCB 4 is powered on with an external test instrument, the S parameter of the frequency conversion module can be accurately extracted through the microstrip line 41 and the reed 42. Further, in order to improve the electric connection performance between frequency conversion module's pin and reed 42, install pressure plate assembly 3 on bottom plate 1, pressure plate assembly 3 includes mount 31, clamp plate 32 and briquetting 33, there is the clearance between mount 31 and the bottom plate 1, be convenient for lay frequency conversion module on test seat 2, establish briquetting 33 in mount 31, briquetting 33 passes through the spring and is connected with mount 31, clamp plate 32 movable mounting is on mount 31 up end, during the use, operating personnel applys pressure to clamp plate 32, make briquetting 33 overcome the spring force, push down, briquetting 33 lower extreme can with frequency conversion module butt, apply a decurrent effort to frequency conversion module, make frequency conversion module's limit portion pin and reed 42 butt, compress tightly, need not pass through the welding, can link to each other frequency conversion module's pin and instrument, accomplish the test. The radio frequency pin is connected with the microstrip line 41 through the reed 42, so that the impedance matching transmission standard of 50 ohms is met, and the accuracy of a test result is ensured.

As shown in fig. 2, the spring 42 is formed by connecting a bottom sheet 421 and a spring 422 into a U shape, the end of the spring 422 is inclined to the side away from the bottom sheet 421, and a stop plate 4211 is arranged at the inner side edge of the bottom sheet 421. Specifically, the reed 42 is made of metal, and the frequency conversion module descends under the effect of the pressure plate assembly 3, and the pin of the frequency conversion module can be in contact with the elastic sheet 422, because the elastic sheet 422 inclines to the side away from the bottom sheet 421, and the pin is in flexible contact with the elastic sheet 422, so that the pin is protected, and when the elastic sheet 422 descends, the blocking sheet 4211 is used for limiting the elastic sheet 422 in order to prevent the elastic sheet 422 from being inclined.

As shown in fig. 1 to 4, a connector 21 is disposed at a side portion of the test socket 2, and the connector 21 is electrically connected to the reed 42 through the microstrip line 41. Specifically, connector 21 model is the 30J connector, uses connector 21 direct mount on test seat 2 limit portion, is convenient for transmit frequency conversion module's direct current signal, avoids signal distortion.

As shown in fig. 3, the connector 21 is connected to the test socket 2 via an adapter plate 211. Specifically, the adapter plate 211 is used to mount the connector 21, so as to prevent the connector 21 from being damaged due to the hole formed in the connector 21.

As shown in fig. 3 to 4, a groove 22 is formed on the upper end surface of the test socket 2. Specifically, set up recess 22 for the frequency conversion module is placed in the location, avoids the installation dislocation.

As shown in fig. 3, two positioning pins 11 are disposed at the edge of the bottom plate 1, four supporting columns 311 are disposed at the corners of the fixing frame 31, and the two supporting columns 311 are movably connected with the positioning pins 11. Two hand screws 12 are further arranged on the edge of the bottom plate 1, and the two hand screws 12 penetrate through the supporting column 311 and are connected with the bottom plate 1. Specifically, when the fixing frame 31 is installed, the two symmetrical supporting columns 311 are connected with the positioning pins 11, so that the fixing frame 31 is prevented from rotating and dislocating when the hand screws 12 are screwed, and the fixing frame 31 is installed on the bottom plate 1 by using the hand screws 12, so that the bottom plate 1 and the fixing frame 31 can be locked.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a test fixture of frequency conversion module which characterized in that: including the bottom plate, test seat and clamp plate subassembly, the test seat is installed on the bottom plate, the test seat up end is provided with the PCB board, PCB board up end is provided with microstrip line and reed, the reed with the microstrip line electricity is connected, clamp plate subassembly includes the mount, clamp plate and briquetting, mount demountable installation is in on the bottom plate, briquetting movable mounting is in the mount, the briquetting is located directly over the test seat and with the test seat butt that moves, clamp plate movable mounting be in the mount deviates from one side of test seat, the clamp plate with the briquetting is connected.

2. The test fixture of claim 1, wherein: the reed is in a U shape formed by connecting a bottom sheet and a spring sheet, the end part of the spring sheet inclines to one side back to the bottom sheet, and a blocking piece is arranged at the edge part of the inner side of the bottom sheet.

3. The test fixture of claim 1, wherein: and a connector is arranged at the edge part of the test seat and is electrically connected with the reed through the microstrip line.

4. The test fixture of a frequency conversion module of claim 3, wherein: the connector is connected with the test seat through the adapter plate.

5. The test fixture of claim 4, wherein: the upper end face of the test seat is provided with a groove.

6. The test fixture of a frequency conversion module of claim 1 or 5, wherein: the bottom plate limit portion is provided with two locating pins, the corner of mount is provided with four support columns, two the support column with locating pin swing joint.

7. The test fixture of a frequency conversion module of claim 6, wherein: and two hand-screwed screws are further arranged on the edge of the bottom plate and penetrate through the supporting column to be connected with the bottom plate.