CN216595238U

CN216595238U - Radio frequency test shielding jig

Info

Publication number: CN216595238U
Application number: CN202122986263.2U
Authority: CN
Inventors: 庄爱萍; 冯利民
Original assignee: Suzhou HYC Technology Co Ltd
Current assignee: Suzhou HYC Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-24
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to a radio frequency test shielding jig which is used in cooperation with test equipment to shield interference of external signals to a radio frequency chip in a test process, and the radio frequency test shielding jig comprises a pressure head, a test socket module, a PCB (printed circuit board), a supporting plate and a probe assembly which are sequentially arranged in the vertical direction, wherein: the pressure head outer cover is provided with a first shielding cover; the test socket module is used for bearing the radio frequency chip and is detachably arranged on the PCB; the PCB is fixed on the support plate; the probe assembly is provided with a plurality of probes, one ends of the probes are used for abutting against test points of the radio frequency chip, and the other ends of the probes protrude out of the supporting plate and are in contact with the PCB; the radio frequency test shielding jig provided by the utility model has a good shielding effect on external interference signals, can be adapted to various test devices, and has the advantages of high reliability of a radio frequency chip test result and simple structure.

Description

Radio frequency test shielding jig

Technical Field

The utility model relates to the technical field of semiconductor chip testing, in particular to a radio frequency testing shielding jig.

Background

With the development of science and technology, more and more electronic products adopt chips as control systems, and in order to ensure the quality and performance of the chips, the chips need to be subjected to RF (radio frequency) test before leaving factories. Since the RF test has a high requirement on the test environment, in order to avoid the influence of the external signal on the test process, a relatively closed test environment needs to be constructed to shield the external interference signal.

At present, for testing radio frequency chips, manufacturers mostly adopt to cover a metal shell on the radio frequency chip to shield the influence of external signals on the radio frequency chip testing process. However, such metal shells are generally large in size and cannot be directly placed on automation equipment, and even if the metal shells are forcibly placed on the automation equipment, due to the fact that the gap between the metal shells and the automation equipment is large, interference of external signals on a radio frequency chip in a test process cannot be completely shielded, and the test effect of the radio frequency signals is seriously affected.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a shielding jig for testing radio frequency aiming at the problems that the existing shielding jig for testing radio frequency cannot adapt to the automation equipment and the testing effect is poor.

The utility model provides a radio frequency test shielding tool, uses with test equipment is supporting to shield the interference of external signal in to the radio frequency chip test procedure, radio frequency test shielding tool includes pressure head, test socket module, PCB board, backup pad and the probe subassembly that sets gradually along vertical direction, wherein:

the pressure head outer cover is provided with a first shielding cover;

the test socket module is used for bearing the radio frequency chip and is detachably arranged on the PCB;

the PCB is fixedly arranged on the supporting plate;

the probe assembly is provided with a plurality of probes, one ends of the probes are used for being abutted to the test points of the radio frequency chip, and the other ends of the probes protrude out of the supporting plate and are in contact with the PCB.

The radio frequency test shielding jig is provided with the first shielding cover through the outer cover of the pressure head, the outer cover of the test socket module is provided with the second shielding cover, the outer cover of the PCB is provided with the third shielding cover, the interference of external signals to the radio frequency chip in the test process can be shielded, the supporting plate is fixed on the test equipment, the fixed connection of the radio frequency test shielding jig and the test equipment is realized, one end of each of a plurality of probes in the probe assembly is abutted to the test point of the radio frequency chip, the test signals of the radio frequency chip can be output to the test equipment, and the test of the radio frequency chip is completed under a relatively closed test environment. The radio frequency test shielding jig has a good shielding effect on external interference signals, can be adapted to various test devices, and is high in reliability of radio frequency chip test results and simple in structure.

In one embodiment, the number of the indenters is plural, the number of the test socket modules is also plural, and the plurality of the indenters correspond to the plurality of the test socket modules.

In one embodiment, the supporting plate is provided with a plurality of hollowed holes, the PCB correspondingly sinks into the hollowed holes, the hollowed hole is covered with a fourth shielding cover, and the other end of the probe protrudes out of the fourth shielding cover.

In one embodiment, the first shield, the second shield, the third shield and the fourth shield are made of aluminum material, and have a gold dielectric layer or a copper dielectric layer coated on the surface thereof.

In one embodiment, the fourth shielding cover is provided with a fifth shielding cover, the fifth shielding cover is provided with an adapter, the adapter is provided with a through hole for a signal transmission line to pass through, and the signal transmission line is electrically connected with the probe.

In one embodiment, gaps between the indenter and the first shielding case, between the test socket module and the second shielding case, between the PCB board and the third shielding case, and between the PCB board and the support board are filled with conductive foam.

In one embodiment, the PCB board is provided with a plurality of through holes, the supporting plate is provided with threaded holes corresponding to the through holes, and bolts are inserted into the through holes and the threaded holes.

In one embodiment, the threaded hole is a blind hole.

In one embodiment, the part of the pressure head contacting the radio frequency chip is made of one of polyetheretherketone or polytetrafluoroethylene.

In one embodiment, the test socket module is fixed to the PCB by screwing.

Drawings

Fig. 1 is a schematic structural diagram of a radio frequency testing shielding fixture provided in the present invention;

fig. 2 is a schematic view of a mounting position of a fifth shield according to the present invention.

Reference numerals:

100. a radio frequency test shielding jig;

110. a pressure head; 111. a first shield case; 120. testing the socket module; 121. a second shield case; 130. a PCB board; 131. a third shield case; 140. a support plate; 141. hollowing out holes; 142. a fourth shield can; 150. a probe assembly; 151. a probe; 160. a fifth shield case; 161. an adapter; 162. and a through hole.

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.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical scheme provided by the embodiment of the utility model is described below by combining the accompanying drawings.

As shown in fig. 1, the present invention provides a radio frequency testing shielding fixture 100, wherein the radio frequency testing shielding fixture 100 is used with a testing device (not shown) to shield interference of an external signal to a radio frequency chip (not shown) during a testing process. Specifically, the rf test shielding fixture 100 includes a pressing head 110, a test socket module 120, a PCB 130 (circuit board), a supporting plate 140 and a probe assembly 150, wherein the pressing head 110, the test socket module 120, the PCB 130, the supporting plate 140 and the probe assembly 150 are sequentially disposed along a vertical direction.

The ram 110 is covered with a first shield 111. Specifically, the first shielding cover 111 may be covered outside the pressing head 110 by a screw, a snap, an embedding manner, or the like.

The test socket module 120 is covered with a second shield 121. Specifically, the second shielding cover 121 may be covered and disposed outside the test socket module 120 by a screw connection, a clamping connection, an embedding connection, and the like. The test socket module 120 is used for receiving the rf chip, that is, the rf chip to be detected can be placed in the test socket module 120 for detection, and the test socket module 120 is detachably disposed on the PCB 130, so that the test socket modules 120 of different models can be replaced conveniently to complete detection of different types of rf chips.

The PCB 130 is covered with a third shield cover 131. Specifically, the third shielding cover 131 may be covered outside the PCB 130 by means of screw connection, clamping connection, embedding, and the like. And the PCB 130 is fixed to the support plate 140 by means of screw, snap, rivet, etc. to achieve the fixed connection of the PCB 130.

The probe assembly 150 is provided with a plurality of probes 151, one ends of the probes 151 are used for abutting against a test point of the radio frequency chip, the other ends of the probes 151 protrude out of the supporting plate 140, and the other ends of the probes 151 are connected to the PCB 130 so as to output a test signal on the radio frequency chip to a test device, and the test of the radio frequency chip is completed in a relatively airtight test environment.

The radio frequency test shielding jig 100 is provided with the first shielding cover 111 covering the pressure head 110, the second shielding cover 121 covering the test socket module 120, and the third shielding cover 131 covering the PCB 130, so as to shield interference of external signals to the radio frequency chip during the test process, the supporting plate 140 is fixed on the test equipment, so as to realize the fixed connection between the radio frequency test shielding jig 100 and the test equipment, one end of the probes 151 in the probe assembly 150 abuts against the test point of the radio frequency chip, so as to output the test signal of the radio frequency chip to the test equipment, and the test of the radio frequency chip is completed in a relatively airtight test environment. The radio frequency test shielding jig 100 has a good shielding effect on external interference signals, can be adapted to various test devices, and has high reliability of radio frequency chip test results and a simple structure.

In order to improve the testing efficiency of the rf chip, in a preferred embodiment, as shown in fig. 1, there are a plurality of indenters 110 and a plurality of test socket modules 120, and the plurality of indenters 110 correspond to the plurality of test socket modules 120, that is, the plurality of indenters 110 correspond to the plurality of test socket modules 120 one by one, so that the plurality of indenters 110 can press the plurality of test socket modules 120 at the same time. Specifically, when the number of the indenters 110 is 4 and the number of the test socket modules 120 is 4, the 4 indenters 110 can simultaneously press and connect the 4 test socket modules 120, so that the detection of the 4 rf chips is completed, and the test efficiency of the rf chips is improved. Of course, in other embodiments, the specific number of the indenter 110 and the test socket module 120 may be other values, and the specific number of the indenter 110 and the test socket module 120 is not limited in the present invention, and only the number of the indenter 110 and the test socket module 120 is required to be consistent.

In the rf testing shielding fixture 100, the plurality of pressing heads 110 can press and connect the plurality of testing socket modules 120 at the same time, so as to complete the detection of the plurality of rf chips placed in the plurality of testing socket modules 120, thereby significantly improving the testing efficiency of the rf chips.

In order to fix the PCB 130, as shown in fig. 1, in a preferred embodiment, the supporting plate 140 is formed with a plurality of hollow holes 141, and since the PCB 130 has various types of electrical components, the PCB 130 correspondingly sinks into the hollow holes 141, so as to fixedly connect the PCB 130 and the supporting plate 140. In addition, the hollow hole 141 is covered with a fourth shielding cover 142, and specifically, the fourth shielding cover 142 can be covered outside the hollow hole 141 by means of screwing, clamping, embedding and the like so as to shield interference of external signals to the radio frequency chip in the testing process, and the radio frequency chip is tested in a relatively closed testing environment.

The first shield cover 111 is made of an aluminum material, the second shield cover 121 is made of an aluminum material, the third shield cover 131 is made of an aluminum material, the fourth shield cover 142 is also made of an aluminum material, and a gold dielectric layer or a copper dielectric layer is coated on the surfaces of the first shield cover 111, the second shield cover 121, the third shield cover 131 and the fourth shield cover 142. When the shielding effect requirement of the radio frequency test shielding jig 100 is high, the first shielding cover 111, the second shielding cover 121, the third shielding cover 131 and the fourth shielding cover 142 are preferably coated with a gold dielectric layer on the surfaces thereof; when the manufacturing cost requirement of the rf test shielding fixture 100 is high, the first shielding cover 111, the second shielding cover 121, the third shielding cover 131, and the fourth shielding cover 142 are preferably coated with a copper dielectric layer on the surface thereof. Of course, the first shielding cover 111, the second shielding cover 121, the third shielding cover 131 and the fourth shielding cover 142 may also be made of other materials capable of shielding external signal interference, and the specific materials and coating dielectric layers of the first shielding cover 111, the second shielding cover 121, the third shielding cover 131 and the fourth shielding cover 142 are not limited in the present invention.

In order to further improve the shielding effect of the radio frequency test shielding fixture 100, specifically, as shown in fig. 1 and fig. 2, a fifth shielding cover 160 is disposed outside the fourth shielding cover 142, and the fifth shielding cover 160 can be covered outside the fourth shielding cover 142 by means of screw connection, clamping connection, embedding, and the like. The fifth shield case 160 is provided with an adapter 161, and the adapter 161 has a through hole 162 for a signal transmission line to pass through, and the signal transmission line is electrically connected to the probe 151. Specifically, one end of the signal transmission line is connected to the testing device, and the other end of the signal transmission line is electrically connected to the probe 151, so that the testing signal of the rf chip acquired by the probe 151 can be transmitted to the testing device through the signal transmission line. The fifth shield can 160 may be made of an aluminum material, and a gold dielectric layer or a copper dielectric layer is coated on the surface of the fifth shield can 160.

In the radio frequency testing shielding jig 100, the probe 151 is located inside the fifth shielding case 160, so as to further improve the shielding effect of the radio frequency testing shielding jig 100, prevent the interference of external signals to the radio frequency chip testing process, and further improve the reliability of the radio frequency chip testing result.

In order to further improve the shielding effect of the shielding fixture 100 for rf testing, in a preferred embodiment, as shown in fig. 1 and fig. 2, a gap between the pressing head 110 and the first shielding cover 111 is filled with conductive foam, a gap between the test socket module 120 and the second shielding cover 121 is filled with conductive foam, a gap between the PCB 130 and the third shielding cover 131 is filled with conductive foam, and a gap between the PCB 130 and the supporting plate 140 is also filled with conductive foam. On the one hand, the cotton laminating that can guarantee between each connecting piece of electrically conductive bubble is inseparabler, prevents revealing of radio frequency signal, and on the other hand also can prevent that external signal from entering into to radio frequency test shielding jig 100 inside from the gap, causes the interference to the test of radio frequency chip. The shielding effect of the radio frequency test shielding jig 100 can be further improved by filling the conductive foam in the gap, so that the reliability of the test result of the radio frequency chip is improved.

It should be noted that, the gap between the fourth shielding cover 142 and the supporting plate 140 is filled with the conductive foam, and the gap between the fifth shielding cover 160 and the fourth shielding cover 142 is also filled with the conductive foam, so that the shielding effect of the radio frequency testing shielding fixture 100 can be ensured, and the reliability of the test result of the radio frequency chip can be improved.

In order to detachably connect the PCB 130 and the support plate 140, in a preferred embodiment, as shown in fig. 1, a plurality of through holes (not shown) are formed in the PCB 130, a plurality of threaded holes (not shown) are formed in the support plate 140, the plurality of through holes correspond to the plurality of threaded holes, and bolts (not shown) are inserted into the through holes and the threaded holes. Can realize dismantling between PCB board 130 and the backup pad 140 through the bolt and be connected, make things convenient for the dismantlement of PCB board 130, when PCB board 130 takes place to damage, can directly dismantle PCB board 130, the convenience is maintained or is changed PCB board 130.

To further improve the shielding effect of the rf testing shielding fixture 100, specifically, as shown in fig. 1, the threaded hole is a blind hole, i.e., the threaded hole opens on the surface of the supporting plate 140 close to the PCB 130 and extends a certain thickness toward the inside of the supporting plate 140. The external signal can be prevented from entering the radio frequency testing shielding jig 100 from the gap to interfere with the testing of the radio frequency chip, and the shielding effect of the radio frequency testing shielding jig 100 is improved.

To protect the rf chip from damage during testing, a preferred embodiment, as shown in fig. 1, is to make the portion of the ram 110 that contacts the rf chip from one of Polyetheretherketone (PEEK) or Polytetrafluoroethylene (PTFE). When the pressure head 110 is used for crimping the radio frequency chip, the pressure head 110 is in flexible contact with the radio frequency chip, so that the radio frequency chip can be prevented from being damaged by the pressure head 110, the radio frequency chip can be protected from being damaged, and the detection efficiency of the radio frequency chip can be improved.

Of course, the specific material of the portion of the pressure head 110 contacting the rf chip is not limited to the above-mentioned teflon and polyetheretherketone, but may also be other flexible materials, and the specific material of the portion of the pressure head 110 contacting the rf chip is not limited in the present invention.

In order to improve the applicability of the rf testing and shielding jig 100, as shown in fig. 1, in a preferred embodiment, the testing socket module 120 is detachably fixed on the PCB 130 by screwing, and when testing various types of rf chips, the testing socket module 120 of different types can be replaced to receive different types of rf chips, so as to test different types of rf chips, thereby improving the applicability of the rf testing and shielding jig 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 radio frequency test shielding tool, uses with test equipment is supporting to shield the interference of external signal in to the radio frequency chip test procedure, a serial communication port, radio frequency test shielding tool includes pressure head, test socket module, PCB board, backup pad and the probe subassembly that sets gradually along vertical direction, wherein:

the pressure head outer cover is provided with a first shielding cover;

the PCB is fixedly arranged on the supporting plate;

2. The RF test shielding fixture of claim 1, wherein the number of the pressing heads is plural, the number of the test socket modules is plural, and the plural pressing heads correspond to the plural test socket modules.

3. The RF testing shielding fixture according to claim 1, wherein the supporting plate has a plurality of holes, the PCB is correspondingly sunk into the holes, and a fourth shielding cover is disposed outside the holes, and the other end of the probe protrudes out of the fourth shielding cover.

4. The RF test shielding jig of claim 3, wherein the first shielding cover, the second shielding cover, the third shielding cover and the fourth shielding cover are made of aluminum material, and a gold dielectric layer or a copper dielectric layer is coated on the surface of the first shielding cover, the second shielding cover, the third shielding cover and the fourth shielding cover.

5. The radio frequency test shielding jig of claim 3, wherein the fourth shielding cover housing is provided with a fifth shielding cover, the fifth shielding cover is provided with an adapter, the adapter is provided with a through hole for a signal transmission line to pass through, and the signal transmission line is electrically connected with the probe.

6. The RF test shielding jig of claim 1, wherein gaps between the indenter and the first shielding cover, between the test socket module and the second shielding cover, between the PCB and the third shielding cover, and between the PCB and the support plate are filled with conductive foam.

7. The RF testing shielding fixture according to claim 1, wherein the PCB has a plurality of through holes, the supporting plate has a plurality of threaded holes corresponding to the through holes, and bolts are inserted into the through holes and the threaded holes.

8. The RF test shielding fixture of claim 7, wherein the threaded holes are blind holes.

9. The shielding jig for testing radio frequency according to claim 1, wherein a portion of the pressing head contacting the radio frequency chip is made of one of polyetheretherketone or polytetrafluoroethylene.

10. The radio frequency test shielding fixture of claim 1, wherein the test socket module is fixed on the PCB by screwing.