CN116826461A - Radio frequency connector and radio frequency test fixture - Google Patents

Abstract

The application relates to the technical field of radio frequency testing and discloses a radio frequency connector, which comprises a shielding ring and a signal rod, wherein the shielding ring is provided with a grounding contact part for contacting with a grounding point around a thimble on a board card, and the shielding ring is also used for connecting a grounding wire; the signal rod penetrates through the shielding ring, the signal rod is provided with a first end positioned in the shielding ring and a second end positioned outside the shielding ring, the first end is provided with a thimble contact part used for being contacted with the thimble, and the second end is used for being connected with a signal wire. The shielding ring in the radio frequency connector not only can realize board clamping and grounding, but also can shield the contact position of the signal rod and the thimble, thereby avoiding external electromagnetic interference and ensuring the accuracy of measured data. The application also provides a radio frequency test fixture.

Description

Radio frequency connector and radio frequency test fixture

Technical Field

The application relates to the technical field of radio frequency testing, in particular to a radio frequency connector and a radio frequency testing jig.

Background

In order to ensure functional availability and consistency of product production, the product needs to be tested before delivery. Such as a wireless board card, for which radio frequency testing before shipment is indispensable, the test contents include power, frequency, S parameter (Scatter parameter), and the like. At present, most radio frequency interfaces of wireless boards adopt standard connectors, such as SMA connectors, BMC connectors and the like, so that corresponding connectors can be adopted to carry out radio frequency test on products during production. However, the size of the connector is large, and as the product is miniaturized, the radio frequency port is miniaturized, and the test mode cannot perform radio frequency test on the high-density miniaturized product.

For high-density and miniaturized products adopting the thimble, the thimble is generally propped by a flat-headed needle during radio frequency test, the ground wire is connected to a copper sheet near the thimble, and then the thimble and the ground wire are connected to a radio frequency tester for testing.

The above test method can test various contents of the product, but is easy to be interfered by external electromagnetic interference, and the external electromagnetic coupling is connected to the signal, which can result in larger measured data error and affect the accuracy of the measurement result.

Disclosure of Invention

The embodiment of the application provides a radio frequency connector and a radio frequency test jig, which are used for solving the problem that the measured data error is larger because the existing radio frequency test mode is easy to be subjected to external electromagnetic interference.

An embodiment of a first aspect of the present application provides a radio frequency connector, where the radio frequency connector includes a shielding ring and a signal rod, the shielding ring is provided with a ground contact portion for contacting with a ground point around a thimble on a board card, and the shielding ring is further used for connecting with a ground wire; the signal rod penetrates through the shielding ring, the signal rod is provided with a first end positioned in the shielding ring and a second end positioned outside the shielding ring, the first end is provided with a thimble contact part used for being contacted with the thimble, and the second end is used for being connected with a signal wire.

The radio frequency connector provided by the embodiment of the application comprises the shielding ring and the signal rod, wherein the first end of the signal rod is provided with the thimble contact part for contacting with the thimble, the second end of the signal rod is used for connecting with the signal wire, and when the board card is used for radio frequency test, the signal rod can transmit signals from the board card to the radio frequency tester so as to obtain data of power, frequency, S parameters and the like of the board card. The shielding ring is provided with the grounding contact part for contacting with the grounding point around the thimble on the board card, and the shielding ring is used for being connected with the grounding wire, when the board card is tested in a radio frequency mode, the shielding ring can realize the grounding of the board card, and can shield the contact position of the signal rod and the thimble, reduce the external electromagnetic interference and ensure the accuracy of measured data.

In some embodiments, the shielding ring is provided with grounding rods, at least two grounding rods are arranged at intervals along the circumferential direction of the shielding ring, a first elastic piece is arranged between the grounding rods and the shielding ring, so that the grounding rods are assembled on the shielding ring in a floating mode, and one end, away from the shielding ring, of each grounding rod is provided with the grounding contact part.

Through adopting above-mentioned technical scheme, first elastic component can provide certain elasticity to the earthing rod, guarantees that ground contact portion and the ground point on the integrated circuit board contact steadily.

In some embodiments, the ground contact is a ground contact disc having a diameter greater than a diameter of the ground rod; the first elastic piece is a first pressure spring sleeved on the grounding rod, one end of the first pressure spring is propped against the grounding contact disc, and the other end of the first pressure spring is propped against the shielding ring.

By adopting the technical scheme, the first pressure spring is sleeved on the grounding rod, so that the stability of the first pressure spring in the extending and contracting process can be ensured, and the installation of the first pressure spring is facilitated; in addition, the diameter of the grounding contact disc is larger than that of the grounding rod, so that the contact area with the grounding point on the board card is increased, and the grounding contact part is further ensured to be in stable contact with the grounding point on the board card.

In some embodiments, the shielding ring comprises a circular ring section and a conical ring section, the conical ring section comprises a large-diameter end and a small-diameter end, the large-diameter end is connected to the circular ring section, the small-diameter end is sleeved on the signal rod, and an insulating layer is arranged on the inner side surface of the small-diameter end and/or the outer side surface of the signal rod.

Through adopting above-mentioned technical scheme, the ring section guarantees that the signal pole has sufficient installation space, and the taper ring section can seal the top of ring section, further reduces external electromagnetic interference.

In some embodiments, a mounting bracket is provided within the shield ring, and a second elastic member is provided between the signal rod and the mounting bracket, so that the signal rod is floatingly mounted on the mounting bracket.

Through adopting above-mentioned technical scheme, when the thimble contact on signal pole and the integrated circuit board for signal pole has certain compression, prevents that the contact force from being too big and damaging the thimble on the integrated circuit board.

In some embodiments, the thimble contact is a thimble contact disc having a diameter greater than the diameter of the signal rod; the second elastic piece is a second pressure spring sleeved on the signal rod, one end of the second pressure spring is propped against the thimble contact disc, and the other end of the second pressure spring is propped against the mounting frame.

By adopting the technical scheme, the second pressure spring is sleeved on the signal rod, so that the stability of the second pressure spring in the extending and contracting process can be ensured, and the installation of the second pressure spring is facilitated; in addition, the diameter of the thimble contact disc is larger than that of the signal rod, so that the contact area between the thimble contact disc and the thimble is increased, and the stable contact between the thimble contact part and the thimble is further ensured.

In some embodiments, the ground contact and/or the thimble contact are plated with a conductive plating.

By adopting the technical scheme, the low connection impedance between the grounding contact part and/or the thimble contact part and the corresponding device is ensured, and the signal transmission is facilitated.

In some embodiments, the conductive plating is gold plating.

By adopting the technical scheme, the connection impedance between the grounding contact part and/or the thimble contact part and the corresponding device is further reduced.

An embodiment of a second aspect of the present application provides a radio frequency test fixture, where the radio frequency test fixture includes a support frame and a test platform, the support frame can move up and down relative to the test platform, the test platform is used for placing a board card, and the radio frequency connector according to the first aspect is installed on the support frame.

The radio frequency test fixture provided by the embodiment of the application comprises a support frame and a test platform, wherein a radio frequency connector is arranged on the support frame, and a signal rod of the radio frequency connector can transmit signals from a board card to a radio frequency tester during board card radio frequency test so as to obtain data of power, frequency, S parameters and the like of the board card; the shielding ring of the radio frequency connector can realize board clamping and grounding, and can shield the contact position of the signal rod and the thimble at the same time, so that the external electromagnetic interference is reduced, and the accuracy of measured data is ensured.

In some embodiments, the radio frequency test fixture further comprises a test box, wherein the test box is positioned below the test platform, and a third elastic piece is arranged between the test platform and the test box so as to enable the test platform to be assembled on the test box in a floating manner; and a perforation is arranged on the test platform at a position corresponding to the board card, the test box comprises a probe, and the probe can pass through the perforation to be connected with the board card when the test platform is close to the test box.

Through adopting above-mentioned technical scheme, when beginning to test, the probe that the integrated circuit board on the test platform and test box did not contact, the integrated circuit board on the test platform opens circuit, does not have the power, can prevent like this that the maloperation from leading to the integrated circuit board mistake to go up the electricity damage during the test.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments or the conventional techniques 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 to those of ordinary skill in the art.

FIG. 1 is a schematic diagram of a PCBA board card according to an embodiment of the application;

fig. 2 is a schematic structural diagram of a radio frequency connector according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the connection of the RF connector of FIG. 2 to a PCBA board;

fig. 4 is a schematic structural diagram of a radio frequency test fixture provided by an embodiment of the present application before testing;

FIG. 5 is a schematic structural diagram of a radio frequency test fixture according to an embodiment of the present application during testing;

fig. 6 is a schematic diagram of a testing tool for testing a radio frequency according to an embodiment of the present application.

The meaning of the labels in the figures is:

10. a radio frequency connector; 11. a shielding ring; 111. a cone ring section; 112. a circular ring section; 12. an anti-head release; 13. a grounding rod; 14. a first elastic member; 15. a ground contact; 16. a slide hole; 17. a signal bar; 18. a mounting frame; 19. a second elastic member; 20. a thimble contact portion;

100. a radio frequency test fixture; 101. a lifting frame; 102. a support frame; 103. a handle; 104. a test platform; 105. a third elastic member; 106. a test cartridge; 107. a probe; 108. pushing the push rod;

200. PCBA board card; 201. a thimble; 202. a microstrip line; 203. a ground loop line; 204. compressing the connector; 205. a board card body.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

For high-density and miniaturized products adopting the thimble, the thimble is generally propped by a flat-headed needle during radio frequency test, the ground wire is connected to a copper sheet near the thimble, and then the thimble and the ground wire are connected to a radio frequency tester for testing.

The above test method can test various contents of the product, but is easy to be interfered by external electromagnetic interference, and the external electromagnetic coupling is connected to the signal, which can result in larger measured data error and affect the accuracy of the measurement result.

The application provides a radio frequency connector, which comprises a shielding ring and a signal rod, wherein the signal rod can transmit signals from a PCBA board card to a radio frequency tester during radio frequency test to obtain data such as power, frequency, S parameters and the like of the PCBA board card; the shielding ring can realize board card ground connection, can shield the contact position of signal pole and thimble simultaneously to reduce external electromagnetic interference, guarantee the accuracy of measured data.

An embodiment of the first aspect of the present application provides a radio frequency connector for testing high density, miniaturized products using pins, such as PBCA boards. Referring to fig. 1, a pcba board 200 includes a board body 205 and a thimble 201, the thimble 201 is mounted on the board body 205 and is arranged perpendicular to the board body 205, and one end of the thimble 201, which is close to the board body 205, is connected with a microstrip line 202. The PCBA board 200 needs to be grounded during the RF test, and therefore, the ground ring 203 is provided on the board body 205. Since the ground loop line 203 and the microstrip line 202 are on the same side of the board body 205, the ground loop line 203 is designed in a C shape in order to avoid the microstrip line 202. It will be appreciated that the loop 203 may be designed in two or more arcs; of course, if the ground loop line 203 and the microstrip line 202 are respectively located at both sides of the board body 205, the ground loop line 203 may be designed in a circular shape.

The ejector pin 201 comprises an ejector pin body and a compression connector 204, wherein the ejector pin body is fixed on a plate card body 205, and the compression connector 204 is arranged at one end of the ejector pin body far away from the plate card body 205; a compression spring is arranged between the compression connector 204 and the thimble body, so that the compression connector 204 is assembled on the thimble body in a floating way, namely, the compression connector 204 is telescopic.

Referring to fig. 2 to 4, the rf connector 10 includes a shielding ring 11 and a signal rod 17, the shielding ring 11 is provided with a ground contact portion 15 for contacting with a ground point around a thimble 201 on the board card body 205, and the shielding ring 11 is used for connecting with a ground wire; the signal rod 17 is provided through the shield ring 11, the signal rod 17 having a first end inside the shield ring 11 provided with a thimble contact portion 20 for contacting the thimble 201 and a second end outside the shield ring 11 for connecting the signal wire.

The grounding point is the ground ring 203 on the board body 205, and the ground ring 203 is copper sheet. The ground ring 203 has a gold plating layer to reduce resistance and improve oxidation resistance.

The shield ring 11 is for mounting a signal rod 17, the axis of the shield ring 11 extending in a vertical direction in use. It will be appreciated that the axis of the shield ring 11 may extend in a horizontal direction in use, but is not limited thereto.

The ground contact 15 is disposed on the shield ring 11 for contacting the ground wire 203 on the card body 205. The grounding contact part 15 and the shielding ring 11 are arranged in a split way, the grounding contact part 15 can be fixed on the shielding ring 11, and it is understood that the grounding contact part 15 is fixed on the shielding ring 11 in a welding and interference way; or the ground contact 15 is floatingly connected to the shield ring 11 by means of an elastic member. In other embodiments, the ground contact 15 and the shielding ring 11 may be integrally formed, i.e. the ground contact 15 is the underside of the shielding ring 11.

The shielding ring 11 is provided with a ground wire connecting part for connecting one end of a ground wire, and the other end of the ground wire is connected to the radio frequency tester. It can be understood that the grounding wire connecting part can be a connecting hole, a fixing bolt is arranged in the connecting hole, and one end of the grounding wire is pressed on the shielding ring 11 by the head of the fixing bolt when the fixing bolt is screwed; or the grounding wire connecting part can be a connecting stud, a fixing nut is arranged on the connecting stud, and one end of the grounding wire is pressed on the shielding ring 11 by the fixing nut when the fixing nut is screwed. In other embodiments, the ground wire connection portion may be a welded portion, and one end of the ground wire is welded and fixed to the shielding ring 11.

A part of the signal rod 17 is inside the shield ring 11 and a part is outside the shield ring 11, and the signal rod 17 is arranged coaxially with the shield ring 11. It will be appreciated that the axis of the signal rod 17 may be disposed parallel to the axis of the shield ring 11, but that the ground contact 15 and the pin contact 20 are capable of contacting the ground wire 203 and the compression connector 204, respectively.

The thimble contact portion 20 is provided at a first end of the signal lever 17, for contacting the thimble 201. The thimble contact part 20 and the signal rod 17 are arranged in a split mode, the thimble contact part 20 is fixed on the signal rod 17, and it can be understood that the thimble contact part 20 is fixed on the signal rod 17 in a welding and interference mode; or the thimble contact portion 20 is fixed to the signal lever 17 by a fastener.

The second end of the signal rod 17 is provided with a signal wire connecting part, and the signal wire connecting part is used for connecting one end of a signal wire, and the other end of the signal wire is connected to the radio frequency tester. It can be understood that the signal wire connecting part can be a connecting hole, a fixing bolt is arranged in the connecting hole, and one end of the signal wire is pressed on the signal rod 17 by the head of the fixing bolt when the fixing bolt is screwed; or the signal wire connecting part can be a connecting stud, a fixing nut is arranged on the connecting stud, and one end of the signal wire is pressed on the signal rod 17 by the fixing nut when the fixing nut is screwed. In other embodiments, the signal wire connection portion may be a welded portion, and one end of the signal wire is welded and fixed to the signal lever 17.

The working principle of the radio frequency connector 10 is as follows: during testing, the ground contact part 15 on the shielding ring 11 is contacted with the ground ring line 203, the thimble contact part 20 on the signal rod 17 is contacted with the compression connector 204 on the thimble 201, and meanwhile, the ground wire connection part on the shielding ring 11 and the signal wire connection part on the signal rod 17 are respectively connected to the radio frequency tester through the ground wire and the signal wire so as to realize normal signal conduction. Because the contact part of the thimble contact part 20 and the compression connector 204 is positioned in the shielding ring 11, the shielding ring 11 can shield the contact part of the thimble contact part and the compression connector, thereby reducing the external electromagnetic interference and the loss.

The radio frequency connector 10 provided by the embodiment of the application comprises a shielding ring 11 and a signal rod 17, wherein a first end of the signal rod 17 is provided with a thimble contact part 20 for contacting with a compression connector 204 of a thimble 201, a second end of the signal rod 17 is used for connecting a signal wire, and when the PCBA board 200 is subjected to radio frequency test, the signal rod 17 can transmit signals from the PCBA board 200 to a radio frequency tester so as to obtain data such as power, frequency, S parameters and the like of the PCBA board 200. The shielding ring 11 is provided with the grounding contact part 15 for contacting with the grounding loop wire 203 around the ejector pin 201 on the PCBA board card 200, and the shielding ring 11 is used for connecting with a grounding wire, when the PCBA board card 200 is subjected to radio frequency test, the shielding ring 11 not only can realize grounding of the PCBA board card 200, but also can shield the contact part of the signal rod 17 and the compression connector 204, so that the external electromagnetic interference is reduced, the loss is reduced, and the accuracy of measured data is ensured.

Referring to fig. 2 and 3, in some embodiments, the shielding ring 11 is provided with at least two grounding rods 13, at least two grounding rods 13 are arranged at intervals along the circumferential direction of the shielding ring 11, a first elastic member 14 is disposed between the grounding rods 13 and the shielding ring 11, so that the grounding rods 13 are assembled on the shielding ring 11 in a floating manner, and the end, away from the shielding ring 11, of the grounding rods 13 is provided with the grounding contact portion 15.

It will be appreciated that the grounding bars 13 may be arranged two, three, four, etc. at intervals in the circumferential direction of the shielding ring 11, i.e. the number of grounding bars 13 may be selected as desired. In this embodiment, the axis of the ground rod 13 is parallel to the axis of the shield ring 11 to facilitate the floating of the ground rod 13. In other embodiments, the axis of the grounding rod 13 intersects the axis of the shielding ring 11 at an angle greater than 45 ° to ensure that the grounding rod 13 floats.

The ground contact 15 is provided on the ground rod 13, and can float with the ground contact 15.

By adopting the above technical scheme, the first elastic member 14 can provide a certain elastic force for the grounding rod 13, so as to ensure that the grounding contact portion 15 is in stable contact with the ground wire 203 on the PCBA board 200.

In some embodiments, the ground contact 15 is a ground contact disc having a diameter greater than the diameter of the ground rod 13; the first elastic piece 14 is a first pressure spring sleeved on the grounding rod 13, one end of the first pressure spring is propped against the grounding contact disc, and the other end of the first pressure spring is propped against the shielding ring 11.

Specifically, the lower part of the shielding ring 11 is provided with a sliding hole 16, the upper end of the grounding rod 13 is provided with an anti-falling head 12, the lower end of the grounding rod 13 is provided with a grounding contact disc, the anti-falling head 12 slides in the sliding hole 16 along the up-down direction, and the anti-falling head 12 can prevent the grounding rod 13 from falling out of the shielding ring 11. The upper end of the first pressure spring is propped against the lower side surface of the shielding ring 11, and the lower end of the first pressure spring is propped against the upper side surface of the grounding contact disc.

It will be appreciated that in other embodiments, the first elastic member 14 may be a first tension spring, where the first tension spring is located in the sliding hole 16 and below the anti-falling head 12, and one end of the first tension spring is connected to the anti-falling head 12, and the other end of the first tension spring is connected to the bottom surface of the sliding hole 16.

It will be appreciated that in other embodiments, the first elastic member 14 may be a first rubber sleeve having a certain elasticity and sleeved on the grounding rod 13.

By adopting the technical scheme, the first pressure spring is sleeved on the grounding rod 13, so that the stability of the first pressure spring in the extending and contracting process can be ensured, and the installation of the first pressure spring is facilitated; in addition, the diameter of the grounding contact disc is larger than that of the grounding rod 13, so that the contact area between the grounding contact disc and the grounding wire 203 on the PCBA board 200 is increased, and the grounding contact part 15 is further ensured to be in stable contact with the grounding wire 203 on the PCBA board 200.

In some embodiments, the shielding ring 11 includes a circular ring section 112 and a conical ring section 111, the conical ring section 111 includes a large diameter end and a small diameter end, the large diameter end is connected to the circular ring section 112, the small diameter end is sleeved on the signal rod 17, and an insulating layer is disposed on an inner side surface of the small diameter end and/or an outer side surface of the signal rod 17.

The conical ring section 111 has a structure with a smaller upper part and a larger lower part, the conical ring section 111 is positioned above the circular ring section 112, and the large diameter end of the conical ring section 111 is matched with the circular ring section 112. It will be appreciated that the large diameter end is connected to the upper side of the ring segment 112, and may be welded, or integrally formed with the ring segment 112 as well as the cone ring segment 111. Wherein the slide hole 16 is provided at the lower portion of the circular ring segment 112.

The small diameter end of the conical ring section 111 is matched with the signal rod 17, namely, a small gap is reserved between the small diameter end of the conical ring section 111 and the signal rod 17, so that the signal rod 17 can slide smoothly relative to the small diameter end of the conical ring section 111.

It will be appreciated that the insulating layer may be disposed on the inner side of the small diameter end or on the outer side of the signal rod 17, or on both the inner side of the small diameter end and the outer side of the signal rod 17. The insulating layer can be fixed in a bonding mode, and the insulating layer is made of insulating materials commonly used in the prior art.

By adopting the above technical scheme, the ring segment 112 ensures that the signal rod 17 has enough installation space, and the conical ring segment 111 can seal the upper part of the ring segment 112, so that the external electromagnetic interference is further reduced.

In some embodiments, a mounting bracket 18 is provided within the shield ring 11, and a second resilient member 19 is provided between the signal rod 17 and the mounting bracket 18 to allow the signal rod 17 to be floatingly mounted on the mounting bracket 18.

The mounting frame 18 is fixed at an upper position in the shielding ring 11, and the specific structure of the mounting frame 18 is not limited as long as the signal rod 17 can be mounted and can be ensured to float under the action of the second elastic member 19.

It will be appreciated that in other embodiments, the second resilient member 19 may not be provided, but the signal rod 17 may be directly secured to the mounting frame 18.

By adopting the technical scheme, when the signal rod 17 contacts with the ejector pins 201 on the PCBA board card 200, the signal rod 17 has a certain compression amount, and the contact force is prevented from being too large to damage the ejector pins 201 on the PCBA board card 200.

In some embodiments, the pin contact 20 is a pin contact disc having a diameter greater than the diameter of the signal rod 17; the second elastic piece 19 is a second pressure spring sleeved on the signal rod 17, one end of the second pressure spring is propped against the thimble contact disc, and the other end of the second pressure spring is propped against the mounting frame 18.

Specifically, a through hole is formed in the mounting frame 18, the signal rod 17 comprises a large-diameter section and a small-diameter section, the large-diameter section is located above the small-diameter section, the small-diameter section passes through the through hole and then is connected with the thimble contact disc, the small-diameter section is matched with the through hole, and the second pressure spring is sleeved on the small-diameter section; while the lower end surface of the large-diameter section is in limit fit with the upper side surface of the mounting frame 18 to limit the signal rod 17 to the corresponding position.

It will be appreciated that in other embodiments, the second elastic member 19 may be a second tension spring, where the second tension spring is located between the mounting frame 18 and the large diameter section of the signal rod 17, and the upper end of the second tension spring is connected to the large diameter section of the signal rod 17, and the lower end of the second tension spring is connected to the mounting frame 18.

It will be appreciated that in other embodiments, the second resilient member 19 may be a rubber sleeve that fits over the small diameter section of the signal rod 17.

By adopting the technical scheme, the second pressure spring is sleeved on the signal rod 17, so that the stability of the second pressure spring in the extending and contracting process can be ensured, and the installation of the second pressure spring is facilitated; in addition, the diameter of the thimble contact disc is larger than that of the signal rod 17, so that the contact area with the thimble 201 is increased, and the stable contact between the thimble contact part 20 and the thimble 201 is further ensured.

In some embodiments, ground contact 15 and/or thimble contact 20 are plated with a conductive plating.

It will be appreciated that the conductive coating may be disposed on the underside of the ground contact 15 or on the underside of the thimble contact 20, or both the underside of the ground contact 15 and the underside of the thimble contact 20.

By adopting the technical scheme, the low connection impedance of the grounding contact part 15 and/or the thimble contact part 20 and the corresponding device is ensured, and the signal transmission is facilitated.

In some embodiments, the conductive plating is gold plating.

It will be appreciated that in other embodiments, the conductive plating may be silver plating, or other conductive plating of better conductivity.

By adopting the technical scheme, the connection impedance between the grounding contact part 15 and/or the thimble contact part 20 and the corresponding device is further reduced.

As shown in fig. 4 and 5, a second aspect of the present application provides a radio frequency test fixture 100. The radio frequency test fixture 100 includes a support frame 102 and a test platform 104, the support frame 102 can move up and down relative to the test platform 104, the test platform 104 is used for placing a PCBA board 200, and the radio frequency connector 10 according to the first aspect is mounted on the support frame 102.

The support frame 102 is fixed on the lifting frame 101, the top of the lifting frame 101 is provided with a handle 103, lifting of the lifting frame 101 is realized through the handle 103, and then the radio frequency connector 10 is driven to lift through the support frame 102.

It will be appreciated that the lifting frame 101 is replaced by a fixing frame, a motor and a screw nut mechanism are arranged on the fixing frame, the supporting frame 102 is arranged on the screw nut mechanism, and the motor drives the supporting frame 102 to lift through the screw nut mechanism during working, so that the lifting of the radio frequency connector 10 is realized.

The supporting frame 102 is a flat plate structure, and the supporting frame 102 is provided with a mounting hole for mounting the radio frequency connector 10, but is not limited thereto.

The supporting frame 102 is also provided with a push rod 108, and the push rod 108 is pushed against the PCBA board 200 when moving downwards along with the supporting frame 102, so that the PCBA board 200 is prevented from moving relative to the test platform 104. The number of push rods 108 is at least two to ensure uniformity of the stress of the PCBA board 200.

The test platform 104 is provided with a positioning groove, the positioning groove is matched with the PCBA board card 200, and the PCBA board card 200 is installed in the positioning groove to ensure the stability of the PCBA during testing.

The radio frequency test fixture 100 comprises a support frame 102 and a test platform 104, wherein the radio frequency connector 10 is arranged on the support frame 102, and when the PCBA board 200 is subjected to radio frequency test, a signal rod 17 of the radio frequency connector 10 can transmit signals from the PCBA board 200 to a radio frequency tester so as to obtain data such as power, frequency, S parameters and the like of the PCBA board 200; the shielding ring 11 of the radio frequency connector 10 can realize the grounding of the PCBA board card 200, and can shield the contact position of the signal rod 17 and the thimble 201 at the same time, so as to reduce external electromagnetic interference, reduce loss and ensure the accuracy of measured data. In addition, even if the jig is replaced, the consistency of measured results can be ensured, and the jig is favorable for replication production and unified test standard formulation.

In some embodiments, the radio frequency test fixture 100 further includes a test box 106, the test box 106 is located below the test platform 104, and a third elastic member 105 is disposed between the test platform 104 and the test box 106, so that the test platform 104 is assembled on the test box 106 in a floating manner; perforations are provided on the test platform 104 at locations corresponding to the PCBA board 200, and the test box 106 includes probes 107, such that the probes 107 can be connected to the PCBA board 200 through the perforations when the test platform 104 is positioned adjacent to the test box 106.

It will be appreciated that one of the test platform 104 and the test box 106 is provided with a guide bar, the other of the test platform 104 and the test box 106 is provided with a guide hole, and the guide bar is matched with the guide hole; the third elastic member 105 is a third compression spring sleeved on the guide rod.

The test cartridge 106 is a conventional mature product, and has a power supply and a communication circuit therein, and the probes 107 include two types, i.e., a power supply probe and a communication probe, which are not described in detail herein.

As shown in fig. 4, when the test is started, the PCBA board 200 is not in contact with the probes 107 of the test box 106, the PCBA board 200 is disconnected, and no power is supplied, so that the PCBA board 200 is prevented from being powered on and damaged by misoperation during the test. When the handle 103 is pulled down, the lifting frame 101 drives the supporting frame 102 to move downward together with the radio frequency connector 10. First, the thimble contact portion 20 is contacted with the compression connector 204, and the ground contact portion 15 is contacted with the ground wire 203. When the first elastic element 14 and the second elastic element 19 have a certain compression amount, the ejector rod 108 contacts the PCBA board 200, at this time, the radio frequency connector 10 is fully contacted with the ejector pin 201 and the ground ring 203, the shielding ring 11 of the radio frequency connector 10 realizes the grounding of the PCBA board 200, and at the same time, the contact position of the signal rod 17 and the ejector pin 201 is shielded, so as to reduce the external electromagnetic interference; the signal rod 17 of the radio frequency connector 10 can transmit signals from the PCBA board card 200 to the radio frequency tester to obtain data such as power, frequency, S parameters, etc. of the PCBA board card 200.

As the handle 103 continues to be pressed down, the push rod 108 drives the test platform 104 to move downward, and after the third elastic member 105 has a certain compression, the probe 107 is fully connected with the power supply and the communication test point on the PCBA board 200, and the handle 103 is locked. As shown in fig. 5, the PCBA board 200 is normally powered up and can normally communicate.

As shown in fig. 5 and 6, the PCBA board 200 on the radio frequency test fixture 100 is connected to a radio frequency tester through the radio frequency connector 10, the radio frequency tester is connected to a test computer through a communication line, the test computer is connected to the test box 106 of the radio frequency test fixture 100 through the communication line, and after the radio frequency test fixture 100, the radio frequency tester and the test computer establish communication, the radio frequency conduction test can be performed by means of instructions.

Through adopting above-mentioned technical scheme, when beginning to test, PCBA integrated circuit board 200 on test platform 104 and probe 107 of test box 106 do not have the contact, and PCBA integrated circuit board 200 on test platform 104 opens circuit, does not have the power, and the maloperation leads to PCBA integrated circuit board 200 to mistake power-on damage like this can prevent when testing.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. A radio frequency connector, characterized by: the radio frequency connector comprises a shielding ring and a signal rod, wherein the shielding ring is provided with a grounding contact part for contacting with a grounding point around a thimble on the board card, and the shielding ring is also used for connecting a grounding wire; the signal rod penetrates through the shielding ring, the signal rod is provided with a first end positioned in the shielding ring and a second end positioned outside the shielding ring, the first end is provided with a thimble contact part used for being contacted with the thimble, and the second end is used for being connected with a signal wire.

2. The radio frequency connector of claim 1, wherein: the shielding ring is provided with grounding rods, at least two grounding rods are arranged at intervals along the circumferential direction of the shielding ring, a first elastic piece is arranged between the grounding rods and the shielding ring, so that the grounding rods are assembled on the shielding ring in a floating mode, and one end, far away from the shielding ring, of each grounding rod is provided with a grounding contact portion.

3. The radio frequency connector of claim 2, wherein: the grounding contact part is a grounding contact disc, and the diameter of the grounding contact disc is larger than that of the grounding rod; the first elastic piece is a first pressure spring sleeved on the grounding rod, one end of the first pressure spring is propped against the grounding contact disc, and the other end of the first pressure spring is propped against the shielding ring.

4. The radio frequency connector of claim 1, wherein: the shielding ring comprises a circular ring section and a conical ring section, the conical ring section comprises a large-diameter end and a small-diameter end, the large-diameter end is connected to the circular ring section, the small-diameter end is sleeved on the signal rod, and an insulating layer is arranged on the inner side face of the small-diameter end and/or the outer side face of the signal rod.

5. The radio frequency connector according to any one of claims 1 to 4, wherein: the shielding ring is internally provided with a mounting frame, and a second elastic piece is arranged between the signal rod and the mounting frame so that the signal rod is assembled on the mounting frame in a floating mode.

6. The radio frequency connector according to claim 5, wherein: the thimble contact part is a thimble contact disc, and the diameter of the thimble contact disc is larger than that of the signal rod; the second elastic piece is a second pressure spring sleeved on the signal rod, one end of the second pressure spring is propped against the thimble contact disc, and the other end of the second pressure spring is propped against the mounting frame.

7. The radio frequency connector according to any one of claims 1-4, wherein: and the grounding contact part and/or the thimble contact part is/are plated with a conductive coating.

8. The radio frequency connector according to claim 7, wherein: the conductive coating is a gold-plating layer.

9. A radio frequency test fixture is characterized in that: the radio frequency test fixture comprises a support frame and a test platform, wherein the support frame can move up and down relative to the test platform, the test platform is used for placing a board card, and the radio frequency connector as claimed in any one of claims 1-8 is installed on the support frame.

10. The radio frequency test fixture of claim 9, wherein: the radio frequency test fixture further comprises a test box, wherein the test box is positioned below the test platform, and a third elastic piece is arranged between the test platform and the test box so that the test platform is assembled on the test box in a floating mode; and a perforation is arranged on the test platform at a position corresponding to the board card, the test box comprises a probe, and the probe can pass through the perforation to be connected with the board card when the test platform is close to the test box.