CN213845757U

CN213845757U - Vertical type connects radio frequency connector of PCB

Info

Publication number: CN213845757U
Application number: CN202022917265.1U
Authority: CN
Inventors: 武向文; 陈原; 雷杰
Original assignee: Avic Fushida Technology Co ltd
Current assignee: Avic Fushida Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-07-30
Anticipated expiration: 2030-12-08

Abstract

The application relates to a radio frequency connector for vertically connecting a PCB (printed circuit board), which comprises an outer conductor, an insulating medium and an inner conductor; the tail end of the inner conductor is provided with an elastic contact piece, and after the radio frequency connector is vertically butted with the PCB, the elastic contact piece is in oblique lapping contact with the microstrip line along the direction of the microstrip line on the PCB, so that the elastic contact piece and the microstrip line on the PCB have a certain compression amount in the axial direction of the radio frequency connector. The application provides a PCB's radio frequency connector is met to vertical type is with PCB board straight butt joint back, can realize the good electrical contact of inner conductor and PCB board microstrip to because elasticity contact piece and microstrip line are not laminated completely, guarantee that elasticity contact piece has the difference in height on radio frequency connector axis direction, thereby reduce the capacitive sudden change here, compensate the impedance mismatch here, reduce signal reflection, realize at DC ~ 110GHz frequency band within range, good signal transmission.

Description

Vertical type connects radio frequency connector of PCB

Technical Field

The application belongs to the technical field of radio frequency components and parts, especially relates to a vertical type connects PCB's radio frequency connector.

Background

When the radio frequency connector on the PCB (printed circuit board) is connected with the PCB in a vertical mode, due to the fact that a point with discontinuous impedance exists due to the change of the space structure, when the using frequency is low, the problem of discontinuous impedance does not bring about a problem which is obvious. However, as the frequency of use becomes higher and higher, various problems caused by impedance discontinuity become more apparent, and particularly for the application of a 110GHz rf connector, the connection structure of the connector and the PCB directly affects whether signal transmission is effective or not. In the prior art, a PCB is generally designed to have a multi-layer structure, and then an opening is formed in a ground layer at the connection position of the PCB and a radio frequency connector to compensate impedance mismatch, but the technical mode makes the thickness of the PCB larger, has higher requirements on the design and processing of the PCB, and makes the universality of the radio frequency connector for vertically connecting the PCB worse.

SUMMERY OF THE UTILITY MODEL

To the problems and deficiencies in the prior art, the application provides a vertical PCB-connected radio frequency connector which has reliable electrical connection, and the PCB only needs to adopt a single-layer structure and simultaneously meets the requirement of better signal transmission in the range of DC-110 GHz frequency band.

Specifically, the first aspect of the present application provides a radio frequency connector for vertically connecting a PCB, comprising: an outer conductor, an insulating medium and an inner conductor;

the outer conductor is detachably connected with the PCB and can be electrically connected with the metal layer on the surface of the PCB;

the insulating medium is used for limiting the inner conductor in the inner cavity of the outer conductor and realizing the isolation between the inner conductor and the outer conductor;

the tail end of the inner conductor is provided with an elastic contact piece, and after the radio frequency connector is vertically butted with the PCB, the elastic contact piece is in oblique lapping contact with the microstrip line along the direction of the microstrip line on the PCB, so that the elastic contact piece has a height difference in the axial direction of the radio frequency connector, and the elastic contact piece and the microstrip line on the PCB have a certain compression amount in the axial direction of the radio frequency connector.

As a further explanation of the present application, the insertion hole of the inner conductor and the elastic contact piece are integrally formed.

As a further illustration of the present application, the removable connection between the receptacle of the inner conductor and the resilient contact strip.

As a further explanation of the present application, the tail end of the jack of the inner conductor is provided with a special-shaped key groove, and the upper end face of the elastic contact piece is provided with a special-shaped key, so that the upper end face of the elastic contact piece can be embedded into the special-shaped key groove, and the elastic contact piece is fixedly connected with the jack by welding.

As a further explanation of the present application, the elastic contact piece is arranged in a zigzag shape, and the elastic contact piece and the inner conductor are assembled and fixed to form an L shape.

As a further explanation of the present application, the insulating medium is an elastic sleeve with a split groove, both the inner conductor and the inner cavity of the outer conductor are provided with annular grooves, and the insulating medium is sleeved on the annular groove on the inner conductor and embedded into the annular groove on the outer conductor together with the inner conductor for limiting and fixing.

As a further explanation of this application, be provided with mounting flange on the outer conductor, be provided with the screw hole on the mounting flange, be provided with the mounting hole on the PCB board, the outer conductor with pass through screw packing ring assembly in proper order between the PCB board the screw hole the locking connection is realized to the mounting hole.

As a further explanation of the application, the upper surface and the lower surface of the PCB are both coated with metal layers, the middle layer of the PCB is an insulating medium layer, and the metal layers of the upper surface and the lower surface of the PCB are electrically connected through metallized through holes.

As a further explanation of the present application, a window is disposed on one side of the outer conductor close to the microstrip line.

A second aspect of the present application provides a radio frequency connector as described in any one of the above, where the radio frequency connector is capable of satisfying stable signal transmission in a frequency range of DC-110 GHz.

Compared with the prior art, the method has the following beneficial technical effects:

after the radio frequency connector of the vertical connection PCB is in vertical butt joint with the PCB, the elastic contact piece on the inner conductor of the radio frequency connector and the microstrip line on the PCB have certain compression amount in the axial direction of the radio frequency connector, so that the elastic contact piece extrudes the microstrip line on the PCB to generate contact pressure, and the inner conductor of the radio frequency connector is in good electric contact with the microstrip line of the PCB; and because the elastic contact piece is in oblique lap contact with the microstrip line along the microstrip line direction of the PCB, the elastic contact piece is not completely attached to the microstrip line, and the elastic contact piece is designed with a height difference in the axial direction of the radio frequency connector, thereby reducing capacitive sudden change at the position, compensating impedance mismatch at the position, reducing signal reflection, and realizing good signal transmission in the frequency band range of DC-110 GHz.

Drawings

Fig. 1 is a schematic structural diagram of a vertical PCB of a radio frequency connector provided in the present application;

fig. 2 is a schematic partial cross-sectional view of a vertical PCB of the rf connector provided in the present application;

fig. 3 is a schematic diagram of an inner conductor structure of the rf connector provided in the present application;

FIG. 4 is a schematic view of a jack structure provided herein;

fig. 5 is a schematic view of the structure of the elastic contact piece provided in the present application.

Description of the reference numerals

The antenna comprises a 1-radio frequency connector, 11-outer conductors, 111-mounting flanges, 112-threaded holes, 113-windows, 12-insulating media, 13-inner conductors, 131-jacks, 132-elastic contact pieces, 133-special-shaped key slots, 2-PCB boards, 21-microstrip lines, 22-metalized through holes, 23-mounting holes and 3-screw washer assemblies.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The technical solution of the present application will be explained with reference to specific embodiments.

As shown in fig. 1-5, there is provided a vertical PCB rf connector, comprising: an outer conductor 11, an insulating medium 12, and an inner conductor 13;

the outer conductor 11 is detachably connected with the PCB 2, and the outer conductor 11 can be electrically connected with a metal layer on the surface of the PCB 2;

the insulating medium 12 is used for limiting the inner conductor 13 in the inner cavity of the outer conductor 11 and realizing the isolation between the inner conductor 13 and the outer conductor 11;

the tail end of the inner conductor 13 is provided with an elastic contact piece 132, and after the radio frequency connector 1 is vertically butted with the PCB 2, the elastic contact piece 132 is in oblique lap contact with the microstrip line 21 along the direction of the microstrip line 21 on the PCB 2, so that the elastic contact piece 132 has a height difference in the axis direction of the radio frequency connector 1, and the elastic contact piece 132 and the microstrip line 21 on the PCB 2 have a certain amount of compression in the axis direction of the radio frequency connector 1.

As shown in fig. 2, fig. 3, fig. 4 and fig. 5, the elastic contact piece 132 and the inner conductor 13 are assembled and fixed to be L-shaped, so that after the radio frequency connector 1 and the PCB 2 are vertically butted, the elastic contact piece 132 on the inner conductor 13 of the radio frequency connector 1 and the microstrip line 21 on the PCB have a certain amount of compression in the axial direction of the radio frequency connector 1, and therefore the elastic contact piece 132 presses the microstrip line 21 on the PCB to generate a contact pressure, so that the inner conductor 13 of the radio frequency connector is electrically contacted with the microstrip line 21 on the PCB; and because the elastic contact piece 132 is in oblique lap contact with the microstrip line 21 along the direction of the microstrip line 21 of the PCB, and the elastic contact piece 132 is not completely attached to the microstrip line 21, and the elastic contact piece 132 is designed with a height difference in the axial direction of the radio frequency connector 1, capacitive sudden change at the place is reduced, impedance mismatch at the place is compensated, signal reflection is reduced, and good signal transmission in the range of DC-110 GHz band is realized.

In an implementation manner, a combination structure of the detachable connection between the insertion hole 131 of the inner conductor 13 and the elastic contact piece 132 may be provided, for example, as shown in fig. 3, 4 and 5, a shaped key slot 133 is provided at the tail end of the insertion hole 131 of the inner conductor 13, and the upper end surface of the elastic contact piece 132 is provided with a shaped key, so that the upper end surface of the elastic contact piece 132 can be embedded into the shaped key slot 133, and the fixed connection between the elastic contact piece 132 and the insertion hole 131 is realized by welding; so design for elastic contact piece 132 just can imbed in jack 131 afterbody recess to form preliminary fixed, then can be in the same place elastic contact piece 132 and jack 131 effective fastening through the welding mode, and guarantee better electric contact.

In another realizable manner, the insertion hole 131 of the inner conductor 13 and the elastic contact piece 132 may be integrally formed, that is, the insertion hole 131 and the elastic contact piece 132 are integrally formed.

The above two assembling manners between the elastic contact piece 132 and the inner conductor 13 are only two preferable manners in the present application, and the assembling manner of the elastic contact piece 132 at the tail end of the inner conductor 13 is not particularly limited in the present application as long as the fixed connection of the elastic contact piece 132 can be achieved.

Specifically, as shown in fig. 5, the elastic contact piece 132 may be arranged in a zigzag shape, so that the microstrip line 21 on the PCB 2 can generate a contact pressure perpendicular to the contact surface when pressing the lower end surface of the elastic contact piece 132, thereby generating a stable and reliable electrical contact.

In an implementation manner, as shown in fig. 2, the insulating medium 12 is an elastic sleeve provided with a split groove, annular grooves are provided in the inner cavities of the inner conductor 13 and the outer conductor 11, the insulating medium 12 is sleeved on the annular groove 134 on the inner conductor 13, and the insulating medium 12 and the inner conductor 13 are embedded into the annular groove on the outer conductor 11 for limiting and fixing, so that the inner conductor 13 and the insulating medium 14 can be effectively fixed in both the axial direction and the radial direction.

In an implementation manner, as shown in fig. 1 and fig. 2, the upper surface and the lower surface of the PCB 2 are both coated with metal layers, and the middle layer of the PCB 2 is an insulating dielectric layer, and the metal layers on the upper surface and the lower surface of the PCB 2 are electrically connected through a metalized via hole 22; by the design, when the radio frequency connector 1 is vertically butted with the PCB 2, the outer conductor 11 of the radio frequency connector 1 is in contact with the upper surface metal layer of the PCB 2, and the upper surface metal layer and the lower surface metal layer of the PCB 2 are connected through the metalized via hole 22, so that the outer conductor 11 of the radio frequency connector 1 can be conducted with the lower surface metal layer (grounding layer) of the PCB 2, and the outer conductor is grounded.

In an implementation manner, as shown in fig. 1 and 2, the detachable connection manner between the outer conductor 11 and the PCB board 2 is implemented by the following structure: be provided with mounting flange 111 on the outer conductor 11, be provided with screw hole 112 on the mounting flange 111, be provided with mounting hole 23 on the PCB board 2, outer conductor 11 with pass through screw washer assembly 3 in proper order between the PCB board 2 screw hole 112 mounting hole 23 realizes locking connection.

In an implementation manner, as shown in fig. 1 and fig. 2, a window 113 is disposed on a side of the outer conductor 11 close to the microstrip line 21, and the window 113 may adopt a rectangular or semicircular structure, so as to avoid the transmission line on the PCB 2 and prevent the microstrip line 21 on the PCB 2 from conducting with the upper surface metal layer.

The embodiments given above are preferable examples for implementing the present application, and the present application is not limited to the above-described embodiments. Any non-essential addition or replacement made by a person skilled in the art according to the technical features of the technical solution of the present application falls within the scope of the present application.

Claims

1. A radio frequency connector for vertical connection to a PCB, comprising: an outer conductor (11), an insulating medium (12), and an inner conductor (13);

the outer conductor (11) is detachably connected with the PCB (2), and the outer conductor (11) can be electrically connected with a metal layer on the surface of the PCB (2);

the insulating medium (12) is used for limiting the inner conductor (13) in the inner cavity of the outer conductor (11) and realizing the isolation between the inner conductor (13) and the outer conductor (11);

the tail end of inner conductor (13) is provided with elasticity contact piece (132), just radio frequency connector (1) with PCB board (2) are upright to the back of butt joint, elasticity contact piece (132) along on PCB board (2) microstrip line (21) direction on with microstrip line (21) take the contact to one side, make elasticity contact piece (132) are in there is the difference in height in radio frequency connector (1) axis direction, and make elasticity contact piece (132) with microstrip line (21) are in on PCB board (2) there is certain compression volume in radio frequency connector (1) axis direction.

2. The RF connector of vertical PCB according to claim 1, wherein the insertion hole (131) of the inner conductor (13) and the resilient contact piece (132) are integrally formed.

3. The RF connector of vertical PCB according to claim 1, wherein the plug hole (131) of said inner conductor (13) is detachably connected to said resilient contact piece (132).

4. The RF connector of vertical PCB of claim 3, wherein the rear end of the insertion hole (131) of the inner conductor (13) is provided with a shaped key slot (133), and the upper end face of the elastic contact piece (132) is provided with a shaped key, so that the upper end face of the elastic contact piece (132) can be embedded into the shaped key slot (133), and the fixed connection between the elastic contact piece (132) and the insertion hole (131) is realized by welding.

5. The RF connector of claim 1, wherein the resilient contact (132) is Z-shaped, and the resilient contact (132) is L-shaped when assembled and fixed with the inner conductor (13).

6. The radio frequency connector of vertical type PCB of claim 1, wherein the insulating medium (12) is an elastic sleeve with a split slot, the inner conductor (13) and the outer conductor (11) are both provided with annular grooves, the insulating medium (12) is sleeved on the annular groove (134) on the inner conductor (13) and is limited and fixed by embedding the insulating medium (12) and the inner conductor (13) into the annular groove on the outer conductor (11).

7. The radio frequency connector for vertically connecting the PCB as recited in claim 1, wherein the outer conductor (11) is provided with a mounting flange (111), the mounting flange (111) is provided with a threaded hole (112), the PCB (2) is provided with a mounting hole (23), and the outer conductor (11) and the PCB (2) sequentially pass through the threaded hole (112) and the mounting hole (23) through a screw washer assembly (3) to realize locking connection.

8. The radio frequency connector of vertical type PCB of claim 1, wherein the upper surface and the lower surface of the PCB board (2) are coated with metal layers, the middle layer of the PCB board (2) is an insulating medium layer, and the metal layers on the upper surface and the lower surface of the PCB board (2) are electrically connected through a metalized via hole (22).

9. The RF connector of vertical PCB according to claim 1, wherein the outer conductor (11) has a window (113) on a side thereof adjacent to the microstrip line (21).

10. The RF connector of an upright PCB as recited in any one of claims 1-9, wherein the RF connector is capable of satisfying stable signal transmission in the DC-110 GHz frequency band.