WO2016026296A1

WO2016026296A1 - Radio frequency connector, circuit board assembly, filter and diplexer

Info

Publication number: WO2016026296A1
Application number: PCT/CN2015/074903
Authority: WO
Inventors: 王育红; 张煜; 阮金龙; 李春阳
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-08-22
Filing date: 2015-03-23
Publication date: 2016-02-25
Also published as: CN204030175U

Abstract

A radio frequency connector, a circuit board assembly, a filter and a diplexer. The radio frequency connector comprises a connector base (102) and at least one elastic piece (101). The connector base (102) is provided with an accommodating hole (1021) penetrating the upper and lower ends of the connector base (102). The lower end of the elastic piece (101) is connected to the connector base (102), and the upper end of the elastic piece (101) extends out of the upper end of the connector base (102). A connecting column (103) of a radio frequency adapter matched with the radio frequency connector passes through the accommodating hole (1021) from the lower end of the connector base (102) and closely attaches to the upper end of the elastic piece (101).

Description

RF connectors, board assemblies, filters, and duplexers

Technical field

The utility model relates to the field of electronic devices, in particular to a radio frequency connector, a circuit board assembly, a filter and a duplexer.

Background technique

With the diversification of electronic device types, the continuous innovation of the internal structure of electronic devices, and the increasing requirements for miniaturization and integration of electronic devices, the application range of electrical connectors in electronic devices has become increasingly widespread.

The electrical connector is defined as: the mechanical circuit is used to complete the circuit. Electrical contact and electrical insulation are two basic properties of the connector. The two conductors (shown as pins and sockets on the connector) are connected to each other under the action of mechanical force, called "electrical contact". The two conductors for contact are called "contact pairs". "Contact resistance" refers to the resistance generated at the contact surface between the contact pairs. It is an important technical indicator of the connector. Whether the contact pair is reliable or not is essentially the stability of the contact resistance.

The electrical connector completes all electrical connection functions in the electronic system (except for the internal electrical connection of the components). The application of the electrical connector ensures that the modular design and production of the electronic system are realized. Ensure the electromagnetic signal and electromagnetic energy of the electronic system continue.

Conventional RF connectors (ie, RF electrical connectors) are typically integrally soldered to a printed circuit board PCB and are connected to external devices by puncturing the box above it. For example, when the external device is a RF adapter connected to the filter, the RF adapter is provided with a connecting post (such as a central stud) for passing through a hole in the upper box of the RF connector, thereby contacting the edge of the hole. A connection to the RF connector is achieved. The position and size of the hole in the box above the RF connector is fixed, so it is necessary to ensure the position and size accuracy of the hole so that the center stud passes and contacts the center stud. It can be seen that the traditional RF filter has high precision on the hole of the box body, and is complicated in processing, and the assembly of the RF connector is fixed on the PCB during assembly. Up, so it is not convenient to insert the center stud of the RF adapter into the hole of the box.

Summary of the invention

In order to solve the existing technical problems, the embodiments of the present invention provide a radio frequency connector, a circuit board assembly, a filter, and a duplexer to solve at least the problem that the conventional RF connector is not easily assembled with the RF adapter.

The utility model provides a radio frequency connector, comprising: a connector base and at least one elastic piece; the connector base has a receiving hole extending through the upper and lower ends thereof; the lower end of the elastic piece is connected with the connector base, and the upper end extends out of the connector base The upper end of the RF adapter that is mated with the RF connector passes through the receiving hole through the lower end of the connecting base and is in close contact with the upper end of the spring.

In the above solution, the lower end of the elastic piece is connected to the connector base by directly connecting with the connector base or by the elastic mechanism to the connector base.

In the above solution, the elastic piece is a metal reed.

In order to ensure that the connection between the shrapnel and the connecting post is more stable, the RF connector may include at least two elastic pieces, the upper end of the elastic piece is enclosed, and the shape and size of the surrounding area are matched with the connecting post of the RF adapter. When the connecting post of the RF adapter passes through the receiving hole of the connector base, the enclosed area formed through the upper end of the elastic piece is in close contact with the elastic piece.

In the above solution, the upper ends of the elastic pieces of the RF connector are enclosed in a center symmetrical manner.

In the above solution, the RF connector includes six shrapnels.

The utility model also provides a circuit board assembly, comprising a circuit board, further comprising the above-mentioned RF connector; a circuit board is provided with a through hole, the RF connector is fixed on the circuit board, and the receiving hole and the circuit of the RF connector are arranged The through holes of the board at least partially overlap to allow the connection post of the RF adapter to pass through; the RF connector is connected to the microstrip transmission line on the circuit board.

In the utility model, a preferred method for connecting the RF connector to the microstrip transmission line on the circuit board is: setting at least one of the elastic pieces on the RF connector as a conductive elastic piece, the conductive elastic piece and the micro on the circuit board With a transmission line electrical connection.

The utility model also provides a filter, comprising a filter body and a filter cavity disposed in the filter body, and an RF adapter, further comprising the above-mentioned circuit board assembly, the circuit board assembly being fixed in the filter cavity The RF adapter is provided with a connecting post. The RF adapter is fixed in the filter cavity, and the connecting post passes through the through hole of the circuit board and the receiving hole of the RF connector, and is closely attached to the elastic piece of the RF connector.

The present invention also provides a duplexer including at least one of the above filters.

The beneficial effects of the embodiments of the present invention are:

An embodiment of the present invention provides a radio frequency connector, a circuit board assembly, a filter, and a duplexer, wherein the radio frequency connector includes a connector base and at least one elastic piece; the connector base has a capacity extending through the upper and lower ends thereof The bottom end of the elastic piece is connected with the connector base, and the upper end extends out of the upper end of the connector base; the connecting post of the RF adapter that cooperates with the RF connector passes through the receiving hole through the lower end of the connecting base and is closely attached to the upper end of the elastic piece . The RF connector is connected by the connection between the spring and the RF adapter, because the elastic piece has elasticity, and when it is connected with the connection pole of the RF adapter, the variability is flexible and the connection pole of the RF adapter is flexible. It only needs to pass through the through hole in the base of the connector to contact the elastic piece and then close to the elastic piece. It can be seen that the RF connector provided by the utility model is connected with the connecting post of the RF adapter.

At the time, the operation is very simple, and the assembly operation of the RF connector and the RF adapter is facilitated.

In addition, the utility model adopts the shrapnel to replace the traditional hole of the box body welded on the radio frequency circuit board, and can directly adopt the surface assembly technology SMT production process, and is formed once, which is suitable for mass production, and avoids the uncontrollable introduction of manual welding. factor. Reduces cost by 90% compared to existing RF connectors.

DRAWINGS

1 is a schematic diagram of a radio frequency connector and an RF adapter according to Embodiment 1 of the present invention;

2 is a radio frequency connector and an RF adapter according to Embodiment 1 of the present invention. Schematic diagram of the cooperation;

3 is a schematic diagram of another RF connector and an RF adapter according to Embodiment 1 of the present invention;

4 is a front elevational view showing the structure of a radio frequency connector according to Embodiment 1 of the present invention;

5 is a perspective view showing the structure of a radio frequency connector according to Embodiment 1 of the present invention;

6 is a schematic structural view of a conventional RF adapter;

FIG. 7 is a filter according to Embodiment 3 of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1:

The embodiment provides a radio frequency connector, the radio frequency connector includes a connector base and at least one elastic piece; the connector base has a receiving hole extending through the upper and lower ends thereof; the lower end of the elastic piece is connected with the connector base, and the upper end extends The upper end of the connector base; the connecting post of the RF adapter that cooperates with the RF connector passes through the receiving hole through the lower end of the connecting base and is in close contact with the upper end of the elastic piece. The elastic piece in this embodiment may be a self-deformable elastic piece or a self-deformable elastic piece. For the self-deformable elastic piece, it can be directly connected with the connector base, such as welding; for the self-deformable elastic piece, it can be connected with the connector base through the elastic mechanism.

It can be seen from the structure of the radio frequency connector provided in this embodiment that the radio frequency connector in this embodiment is different from the existing radio frequency connector in that it includes a spring piece. The reason why the shrapnel is used is because the shrapnel has elasticity, and when it is connected with the connecting post of the RF adapter, the variability is flexible and the assembly is easier, unlike the punching of the box in the prior art. The same is fixed.

In this embodiment, the lower end of the elastic piece is directly connected to the connector base or through the elastic mechanism. Connect to the connector base. For the case where the lower end of the elastic piece is directly connected to the connector base, the elastic piece is preferably a self-deformable elastic piece such as a metal reed. If the elastic piece cannot be deformed, it can be connected to the connector base through the elastic mechanism, so that the elastic piece can be moved by the elastic mechanism. The elastic mechanism can be a spring.

In this embodiment, the extending direction of the upper end of the elastic piece is not limited, as long as the connecting post of the RF adapter can be closely attached to the upper end of the elastic piece after passing through the receiving hole.

In one embodiment, in order to make the connection between the RF connector and the connecting post stronger and more stable, at least two elastic pieces can be disposed for the RF connector, the upper end of the elastic piece is enclosed, and the shape and size of the surrounding area are combined with The connecting rod of the RF adapter is adapted; when the connecting post of the RF adapter passes through the receiving hole of the connector base, the enclosed area formed through the upper end of the elastic piece is closely attached to the elastic piece. The shape and size of the area of the upper end of the shrapnel are matched with the connecting post of the RF adapter. The shape of the upper end of the shrapnel is matched with the shape of the RF adapter, and the upper end of the shrapnel does not receive an external force. The area of the surrounding area is smaller than the connecting column. When the connecting column is inserted into the surrounding area, the connecting column gives the outward force of the elastic piece, so that the size of the area becomes large, so that the elastic piece is closely attached to the connecting column.

In one embodiment, the upper ends of the shrapnels of the RF connector are enclosed in a centrally symmetrical manner. More preferably, the RF connector includes six shrapnel.

To more schematically illustrate the RF connector in this embodiment, the following is illustrated in two simple examples:

Example 1:

Please refer to FIG. 1 . FIG. 1 is a schematic cross-sectional view of a connection between a radio frequency connector and a radio frequency adapter according to an embodiment of the present invention. The radio frequency connector includes a spring 101 , a connector base 102 , and a receiving hole 1021 . The elastic piece 101 is a deformable elastic piece, and 102 is a connector base. The connector base 102 has a receiving hole 1021 extending through the upper and lower ends thereof. The lower end of the elastic piece 101 is fixed on the RF connector base 102 by direct fixing. , the upper end is biased toward the center of the receiving hole 1021 The direction of the shaft extends. In the case where the elastic piece 101 is not subjected to an external force, the size of the area surrounded by the upper end is smaller than the size of the connecting post 103 of the RF adapter, and therefore, when the connecting post 103 passes through the receiving hole 1021 of the RF connector, the connecting post 103 It does not directly contact the elastic piece 101, but is in contact first. When the connecting post 103 continues to move toward the upper end of the elastic piece 101, the outward force of the elastic piece 101 is given. Since the elastic piece 101 is a deformable elastic piece, the upper end of the elastic piece 101 will move outward when the connecting post 103 is completely placed on the upper end of the elastic piece 101. When it is in the synthesized area, it will be in close contact with the elastic piece 101, as shown in Fig. 2.

The above example is described by the elastic piece 101 being a deformable elastic piece. The elastic piece 101 can also be indeformable. In this case, the elastic piece 101 is fixed on the connector base 102 by an elastic mechanism, and the elastic piece is controlled by controlling the elastic mechanism. The area of the upper end of the 101 is sized so that the connecting post 103 can be inserted into the area and is in close contact with the elastic piece 101.

Example two:

Referring to FIG. 3, the RF connector in the figure also includes a connector base 302, a receiving hole 3021 on the connector base, and a spring piece 301. The difference from the RF connector in the above example 1 is that the spring piece 301 is not The direction of the central axis of the accommodating hole 3021 extends, but is erected, and the connection piece 303 of the RF adapter can be realized with the elastic piece by setting the elastic piece 301 to a shape that is bent in the direction of the central axis of the accommodating hole 3021. The 301 is close.

For a more detailed description of the radio frequency connector provided by the embodiment, the present embodiment provides a more specific radio frequency connector. Referring to FIG. 4 and FIG. 5, FIG. 4 and FIG. 5 are schematic structural diagrams of the radio frequency connector. The connector base 402 of the RF connector is a fixed ring. The RF connector is provided with six elastic pieces 401, which are metal reeds, which themselves undergo a certain deformation according to an external force applied thereto. The six elastic pieces are fixed on the fixing ring 402 in a center-symmetrical manner, and are fixed on the fixing ring 402 in a manner inclined toward the center of the fixing ring 402, so that the upper ends of the elastic pieces 401 enclose a circle in a center symmetrical manner. Shaped area for attaching to the RF adapter for connection.

Embodiment 2:

The embodiment provides a circuit board assembly, including a circuit board, and further includes the RF connector as in the first embodiment; the circuit board is provided with a through hole, the RF connector is fixed on the circuit board, and the RF connector is received. The hole and the through hole of the circuit board at least partially coincide to allow the connection post of the RF adapter to pass through; the RF connector is connected to the microstrip transmission line on the circuit board.

At least one of the elastic pieces on the RF connector is a conductive elastic piece, and the conductive elastic piece is electrically connected to the microstrip transmission line on the circuit board.

In this embodiment, the circuit board may be a printed circuit board (PCB board).

Embodiment 3:

The embodiment provides a filter, including a filter body and a filter cavity disposed in the filter body, and a radio frequency adapter, and further includes a circuit board assembly as in the second embodiment, the circuit board component is fixed in the filter The cavity is connected with the corresponding conductive region on the filter cavity; the RF adapter is provided with a connecting post and a fixing portion, and the RF adapter is fixed in the filter cavity, and the connecting post passes through the through hole of the circuit board After the receiving hole of the RF connector, close the spring of the RF connector.

In one embodiment, the filter further includes a conductive cushion disposed between the bottom of the circuit board assembly and the filter body and in contact with the RF adapter. Conductive cushions are used to shield the RF signal from the RF adapter and the board and reduce the collision between the RF adapter and the board. Wherein, the conductive cushion can be a conductive apron.

For a more detailed description of the filter provided by this embodiment, a specific embodiment will be described below, please refer to FIG. 6 and FIG. 7, FIG. 6 is a radio frequency adapter, which includes a connecting post 601 and a fixing portion 602; The fixing portion 602 is configured to fix the RF adapter in the filter cavity, and the connecting post 601 can be a center stud. Figure 7 is a schematic structural view of a filter including a filter master Body 801, conductive apron 901, RF connector, RF adapter, and PCB board 701. The PCB board 701 is fixed on the upper end of the filter body 801, and the RF adapter is fixed in the filter cavity through the fixing portion 602. A conductive rubber ring 901 is disposed in the middle of the filter body 801 and the PCB board 701, and the conductive rubber ring 901 is The fixing portion 602 is also in contact, and the conductive rubber ring 901 is used to shield the overflow signal between the RF adapter and the PCB. The base 402 of the RF connector is fixed on the PCB, and the connecting post 601 of the RF adapter passes through the through hole on the PCB and the receiving hole on the base of the RF connector, and is in close contact with the elastic piece 401.

Embodiment 4:

This embodiment provides a duplexer including at least one filter as described in the third embodiment above.

The above is a further detailed description of the present invention in conjunction with the specific embodiments, and the specific implementation of the present invention is not limited to the description. For those skilled in the art to which the present invention pertains, a number of simple deductions or substitutions may be made without departing from the spirit and scope of the invention.

Claims

An RF connector includes: a connector base and at least one elastic piece; the connector base has a receiving hole extending through the upper and lower ends thereof; and the lower end of the elastic piece is connected to the connector base The upper end extends from the upper end of the connector base; the connecting post of the RF adapter that cooperates with the RF connector passes through the receiving hole through the lower end of the connecting base and is in close contact with the upper end of the elastic piece.
The radio frequency connector according to claim 1, wherein a lower end of the elastic piece is directly connected to the connector base; or is connected to the connector base by a resilient mechanism.
The radio frequency connector of claim 2 wherein said spring piece is a metal reed.
The radio frequency connector according to any one of claims 1 to 3, wherein the radio frequency connector comprises at least two elastic pieces, the upper end of the elastic piece is enclosed, and the shape and size of the surrounding area are combined with the RF adapter. The connecting post is adapted; after the connecting post of the RF adapter passes through the receiving hole of the connector base, the enclosed area formed through the upper end of the elastic piece is in close contact with the elastic piece.
The radio frequency connector according to claim 4, wherein the upper ends of the elastic pieces of the radio frequency connector are enclosed in a center symmetrical manner.
The radio frequency connector of claim 5 wherein said radio frequency connector comprises six shrapnels.
A circuit board assembly comprising a circuit board, the assembly further comprising the radio frequency connector according to any one of claims 1 to 6; the circuit board is provided with a through hole, and the radio frequency connector is fixed at the a receiving hole of the RF connector at least partially coincides with a through hole of the circuit board to allow a connecting post of the RF adapter to pass through; and the RF connector and the circuit board Microstrip transmission line connection.
The circuit board assembly according to claim 7, wherein at least one of the elastic pieces on the radio frequency connector is a conductive elastic piece, and the conductive elastic piece and the microstrip transmission line on the circuit board. Electrical connection.
A filter comprising a filter body and a filter cavity disposed within the filter body, and an RF adapter, wherein the filter further comprises the circuit board of claim 7 or 8. An assembly, the circuit board assembly is fixed on the filter cavity; the RF adapter is provided with a connecting post, the RF adapter is fixed in the filter cavity, and the connecting post passes through the circuit After the through hole of the board and the receiving hole of the RF connector, the spring piece of the RF connector is closely attached.
A duplexer comprising at least one filter according to claim 9.