CN219065725U

CN219065725U - Radio frequency chip test fixture calibrating device

Info

Publication number: CN219065725U
Application number: CN202223426663.9U
Authority: CN
Inventors: 王国华; 李泽林
Original assignee: Shenzhen Sireda Technology Co ltd
Current assignee: Shenzhen Sireda Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-23
Anticipated expiration: 2032-12-19

Abstract

The utility model provides a calibration device of a radio frequency chip test fixture, which comprises a calibration assembly, wherein the calibration assembly comprises a mounting plate, a connecting wire, a through hole, a contact terminal, a groove, an avoidance groove, a cover plate, a coaxial connector, a coaxial adapter plate and four positioning pins; the groove is formed in the upper surface of the mounting plate, and the through hole is formed in the inner bottom wall of the groove. According to the utility model, the coaxial adapter plate is pressed by the mounting plate to be in contact with the interface of the test fixture, so that the contact terminal can be kept in close contact with the coaxial adapter plate, the coaxial connector is connected with an external measuring instrument, and further, the communication between the test instrument and the interface of the test fixture is realized, at the moment, standing waves and loss of the test fixture can be calibrated by the instrument, the problem of calibration connection from the chip port of the test fixture to the end of the test instrument is solved, the truest index of a product can be tested, and the purpose of accurately measuring the product by an engineer is achieved.

Description

Radio frequency chip test fixture calibrating device

Technical Field

The utility model relates to a calibration device, in particular to a radio frequency chip test fixture calibration device, and belongs to the technical field of calibration devices.

Background

The current radio frequency chip has no standard coaxial connector test interface, so that a test fixture is required to convert the punctiform interface of the chip into a coaxial interface so as to test the radio frequency chip. Engineers using microwave test instruments know that external accessory calibration is needed before the use of the instruments, but the current calibration piece only has a standard coaxial interface, which means that the calibration of a test device of a radio frequency chip cannot be performed, and test errors caused by an uncalibrated clamp are unacceptable in a radio frequency test system.

The existing radio frequency test fixture is a single-ended interface, is provided with a coaxial connector instrument and is provided with a non-coaxial connection chip, so that a calibration piece cannot be connected with the non-coaxial connection chip, the test fixture cannot be calibrated in the whole test system, further the loss of the test fixture cannot be compensated into the system, the test index is inaccurate, and the tested index cannot reflect the actual condition of a tested product.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a calibration device for a radio frequency chip test fixture, which solves or alleviates the technical problems of the prior art, and at least provides an advantageous option.

The technical scheme of the embodiment of the utility model is realized as follows: the device comprises a calibration assembly, wherein the calibration assembly comprises a mounting plate, a connecting wire, a through hole, a contact terminal, a groove, an avoidance groove, a cover plate, a coaxial connector, a coaxial adapter plate and four positioning pins;

the groove is formed in the upper surface of the mounting plate, the through hole is formed in the inner bottom wall of the groove, the outer side wall of the contact terminal is slidably connected to the inner side wall of the through hole, the lower surface of the cover plate is attached to the inner bottom wall of the groove, the avoidance groove is formed in the upper surface of the cover plate, one end of the connecting wire is fixedly connected to the upper surface of the contact terminal, the other end of the connecting wire is fixedly connected with the coaxial connector, the four locating pins are symmetrically and fixedly connected to the lower surface of the mounting plate, the coaxial adapter plate is fixedly connected to the bottoms of the outer side walls of the four locating pins, and the lower surface of the contact terminal is attached to the upper surface of the coaxial adapter plate.

Further preferably, one end of the connecting wire, which is close to the cover plate, is located inside the avoidance groove, and the cover plate is fixedly connected to the inner bottom wall of the groove through four bolts.

Further preferably, the lower surface of the cover plate is attached to the upper surface of the contact terminal.

Further preferably, a test fixture assembly is mounted on the lower surface of the coaxial adapter plate, and the test fixture assembly comprises a mounting seat, a mounting groove, a test fixture interface, a bottom plate, a base and a rotating seat;

the mounting groove is formed in the upper surface of the mounting seat, and the test fixture interface is mounted on the inner bottom wall of the mounting groove.

Further preferably, the lower surface of the coaxial adapter plate is attached to the upper surface of the test fixture interface.

Further preferably, the mounting plate is mounted to the inner bottom wall of the mounting groove by four bolts.

Further preferably, the mounting base is mounted on the upper surface of the base plate, and the base is mounted on the upper surface of the bottom plate.

Further preferably, the rotating base is rotatably connected to the rear portion of the upper surface of the base.

By adopting the technical scheme, the embodiment of the utility model has the following advantages: according to the utility model, the coaxial adapter plate is tightly pressed by the mounting plate to be in contact with the interface of the test fixture, so that the coaxial adapter plate can be well contacted with the interface of the test fixture, the contact terminal can be tightly pressed by the cover plate to be in close contact with the coaxial adapter plate, the coaxial connector is connected with an external measuring instrument, and further the communication between the test instrument and the interface of the test fixture is realized, at the moment, standing waves and loss of the test fixture can be calibrated by the instrument, the problem of calibration connection from the chip port of the test fixture to the end of the test instrument is solved, the truest index of a product can be tested, and the purpose of accurately measuring the product by an engineer is achieved.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a schematic diagram of the connection between a mounting plate and a mounting base according to the present utility model;

FIG. 3 is a block diagram of a mounting plate of the present utility model;

FIG. 4 is a schematic diagram of the connection of the cover plate to the mounting plate according to the present utility model;

fig. 5 is a block diagram of the mounting base of the present utility model.

Reference numerals: 101. a calibration assembly; 11. a mounting plate; 12. a connecting wire; 13. a through hole; 14. a contact terminal; 15. a groove; 16. an avoidance groove; 17. a cover plate; 18. a coaxial connector; 19. a mounting base; 20. a coaxial adapter plate; 21. a mounting groove; 22. testing a fixture interface; 23. a positioning pin; 301. a test fixture assembly; 31. a bottom plate; 32. a base; 34. a rotating seat.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-5, an embodiment of the present utility model provides a calibration device for a radio frequency chip test fixture, which includes a calibration assembly 101, where the calibration assembly 101 includes a mounting plate 11, a connecting wire 12, a through hole 13, a contact terminal 14, a groove 15, an avoidance groove 16, a cover plate 17, a coaxial connector 18, a coaxial adapter plate 20, and four positioning pins 23;

the recess 15 is offered in the upper surface of mounting panel 11, the through-hole 13 is offered in the interior bottom wall of recess 15, contact terminal 14 lateral wall sliding connection is in the inside wall of through-hole 13, the lower surface laminating of apron 17 is in the interior bottom wall of recess 15, dodge the groove 16 and offer in the upper surface of apron 17, the one end fixed connection of connecting wire 12 is in the upper surface of contact terminal 14, the other end and the coaxial connector 18 fixed connection of connecting wire 12, four locating pins 23 symmetry fixed connection are in the lower surface of mounting panel 11, coaxial keysets 20 fixed connection is in the lateral wall bottom of four locating pins 23, the lower surface laminating of contact terminal 14 is in the upper surface of coaxial keysets 20.

In one embodiment, one end of the connecting wire 12, which is close to the cover plate 17, is located inside the avoidance groove 16, the cover plate 17 is fixedly connected to the inner bottom wall of the groove 15 through four bolts, the lower surface of the cover plate 17 is attached to the upper surface of the contact terminal 14, and the position of the contact terminal 14 can be defined by the cover plate 17, so that the contact terminal 14 is kept in contact with the coaxial adapter plate 20.

In one embodiment, the lower surface of the coaxial adapter plate 20 is mounted with a test fixture assembly 301, the test fixture assembly 301 comprising a mounting block 19, a mounting slot 21, a test fixture interface 22, a bottom plate 31, a base 32, and a swivel block 34;

the mounting groove 21 is formed in the upper surface of the mounting seat 19, the test fixture interface 22 is mounted on the inner bottom wall of the mounting groove 21, the lower surface of the coaxial adapter plate 20 is attached to the upper surface of the test fixture interface 22, the coaxial adapter plate 20 is communicated with the test fixture interface 22 through connecting the coaxial connector 18 with an external test instrument, the coaxial adapter plate 20 is communicated with the connecting wire 12 through the contact terminal 14, the connecting wire 12 is communicated with the external test instrument through the coaxial connector 18, and then standing waves and loss of the test fixture can be calibrated at the moment.

In one embodiment, the mounting plate 11 is mounted on the inner bottom wall of the mounting groove 21 by four bolts, and the mounting plate 11 is conveniently detached by the bolt mounting mode, so that the calibration assembly 101 is removed to test the radio frequency chip by the test fixture.

In one embodiment, the mounting base 19 is mounted on the upper surface of the base 32, the base 32 is mounted on the upper surface of the bottom plate 31, the rotating base 34 is rotatably connected to the rear portion of the upper surface of the base 32, and when the radio frequency chip is tested by the test fixture, the radio frequency chip can be compressed by rotating the rotating base 34, so that the radio frequency chip can be tested conveniently.

The utility model works when in work: the mounting plate 11 is mounted in the mounting groove 21 by using bolts, the position of the mounting plate 11 is limited by the bolts, the stability of the calibration assembly 101 can be enhanced, after the position of the mounting plate 11 is fixed, the coaxial adapter plate 20 can be pressed down to be in close contact with the test fixture interface 22, further, the coaxial adapter plate 20 can be ensured to be in good contact with the test fixture interface 22, then the contact terminal 14 is inserted into the through hole 13, the bottom end of the contact terminal 14 is contacted with the coaxial adapter plate 20, the cover plate 17 is mounted in the groove 15 by using the bolts, the connecting wire 12 is positioned in the avoidance groove 16, and then the contact terminal 14 can be pressed down by using the cover plate 17, meanwhile, the contact terminal 14 is kept in close contact with the coaxial adapter plate 20, so that poor contact condition is avoided, the accuracy in calibration is ensured, the calibration assembly 101 is mounted at the moment, finally, the coaxial connector 18 is connected with an external instrument, and the communication between the test instrument and the test fixture interface 22 is realized, and the standing wave and the loss of the test fixture can be calibrated by using the test instrument at the moment.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A radio frequency chip test fixture calibration device comprising a calibration assembly (101), characterized in that: the calibration assembly (101) comprises a mounting plate (11), a connecting wire (12), a through hole (13), a contact terminal (14), a groove (15), an avoidance groove (16), a cover plate (17), a coaxial connector (18), a coaxial adapter plate (20) and four positioning pins (23);

the utility model discloses a coaxial adapter plate, including mounting panel (11), mounting panel (14), connecting wire (12), locating pin (23), recess (15) set up in the upper surface of mounting panel (11), through-hole (13) set up in the interior bottom wall of recess (15), contact terminal (14) lateral wall sliding connection in the inside wall of through-hole (13), the lower surface laminating of apron (17) in the interior bottom wall of recess (15), dodge groove (16) set up in the upper surface of apron (17), the one end fixed connection of connecting wire (12) in the upper surface of contact terminal (14), the other end of connecting wire (12) with coaxial connector (18) fixed connection, four locating pin (23) symmetry fixed connection in the lower surface of mounting panel (11), coaxial adapter plate (20) fixed connection in four the lateral wall bottoms of locating pin (23), the lower surface laminating of contact terminal (14) in the upper surface of coaxial adapter plate (20).

2. The device for calibrating a radio frequency chip test fixture according to claim 1, wherein: one end of the connecting wire (12) close to the cover plate (17) is located in the avoidance groove (16), and the cover plate (17) is fixedly connected to the inner bottom wall of the groove (15) through four bolts.

3. The device for calibrating a radio frequency chip test fixture according to claim 2, wherein: the lower surface of the cover plate (17) is attached to the upper surface of the contact terminal (14).

4. The device for calibrating a radio frequency chip test fixture according to claim 1, wherein: the lower surface of the coaxial adapter plate (20) is provided with a test fixture assembly (301), and the test fixture assembly (301) comprises a mounting seat (19), a mounting groove (21), a test fixture interface (22), a bottom plate (31), a base (32) and a rotating seat (34);

the mounting groove (21) is formed in the upper surface of the mounting seat (19), and the test fixture interface (22) is mounted on the inner bottom wall of the mounting groove (21).

5. The device for calibrating a radio frequency chip test fixture according to claim 4, wherein: the lower surface of the coaxial adapter plate (20) is attached to the upper surface of the test fixture interface (22).

6. The device for calibrating a radio frequency chip test fixture according to claim 4, wherein: the mounting plate (11) is mounted on the inner bottom wall of the mounting groove (21) through four bolts.

7. The device for calibrating a radio frequency chip test fixture according to claim 4, wherein: the mounting seat (19) is mounted on the upper surface of the base (32), and the base (32) is mounted on the upper surface of the bottom plate (31).

8. The device for calibrating a radio frequency chip test fixture according to claim 4, wherein: the rotating seat (34) is rotatably connected to the rear part of the upper surface of the base (32).