CN108879238B

CN108879238B - Radio frequency connector

Info

Publication number: CN108879238B
Application number: CN201710329105.5A
Authority: CN
Inventors: 刘明非; 张林林; 马德臣; 张辉信; 王健; 陈平
Original assignee: ZTE Corp
Current assignee: Wuhan Zhongxing Software Co ltd
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2022-01-14
Anticipated expiration: 2037-05-11
Also published as: CN108879238A

Abstract

The connector body comprises a circuit board and a plurality of circuit groups arranged on the circuit board, any circuit group comprises a signal transmission line and a plurality of shielding lines arranged around the signal transmission line, a plurality of first switching terminal groups are arranged on the first connecting socket, and a plurality of second switching terminal resistors are arranged on the second connecting socket. The radio frequency connector provided by the invention integrates the signal transmission line on the circuit board, and simultaneously integrates the shielding lines around the signal transmission line on the circuit board, and the shielding lines prevent the mutual interference among the signal transmission lines, thereby not only reducing the volume, but also ensuring the service performance of the radio frequency connector, and being better applied to an RRU complete machine system.

Description

Radio frequency connector

Technical Field

The present disclosure relates to the field of communications devices, and more particularly, to a radio frequency connector.

Background

In the prior RRU (Radio Remote Unit, which converts a baseband optical signal into a Radio frequency signal at a far end to be amplified and transmitted out) whole machine system, because the terminals of connecting sockets of a multi-path integrated Radio frequency coaxial structure (namely, a Radio frequency connector which comprises a lead group and connecting sockets at two ends of the lead group) are too many and dense to be welded and connected with a function board well, the whole machine cannot be produced in batches, and signal transmission lines in the lead group interfere with each other in the using process, the performance of the whole machine is influenced, and the performance of the whole machine is unqualified; therefore, a plurality of single-path radio frequency coaxial structures (namely, single-path radio frequency connectors) arranged in parallel are generally adopted to realize multi-path radio frequency signal transmission, and the mode has larger occupied area (especially transverse direction), can influence the volume of the whole machine and causes lower competitiveness of products.

Disclosure of Invention

The embodiment of the invention provides a radio frequency connector which is small in size, high in signal transmission stability and capable of better meeting the use requirement of the whole machine.

In order to reach this application purpose, this application provides a radio frequency connector, include the connector body, install the first connection socket of connector body one end with install the second connection socket of connector body other end, the connector body includes the circuit board and sets up a plurality of circuit groups on the circuit board, arbitrary the circuit group includes signal transmission line and sets up in this signal transmission line a plurality of shielded wires all around, be provided with a plurality of first switching terminal group on the first connection socket, it hinders, a plurality of second switching terminal to be provided with on the second connection socket, and is a plurality of the one end of circuit group is through a plurality of first switching terminal group carries out the external radio frequency interconnection of one-to-one, a plurality of the other end of circuit group is through a plurality of second switching terminal group carries out the external radio frequency interconnection of one-to-one.

Optionally, the circuit board includes three wiring board layers, the three wiring board layers are stacked together, all the signal transmission lines are distributed on the middle wiring board layer, and all the shielding lines are distributed on the two outer wiring board layers.

Optionally, the shielding lines on the two outer wiring board layers are symmetrically distributed, and the plurality of shielding lines in any one of the line groups are uniformly distributed around the signal transmission line.

Optionally, any of the signal transmission lines includes a hidden section and two external terminals, the circuit board further includes a terminal board layer disposed on an outer board surface of at least one of the two wiring board layers on the outer side, all of the external terminals are distributed on the outer board surfaces at two ends of the terminal board layer, and all of the hidden section is distributed on the middle wiring board layer.

Optionally, the connector body further includes a vertically through housing, the circuit board is mounted in the housing and can swing back and forth in the housing, the one end of the plurality of line groups is located at the lower through opening of the housing, and the other end of the plurality of line groups is located at the upper through opening of the housing.

Optionally, the middle parts of the left end face and the right end face of the circuit board are correspondingly provided with rotating shaft holes, the middle parts of the inner wall face of the left side and the inner wall face of the right side of the casing are correspondingly provided with rotating shafts, and the two rotating shafts correspondingly extend into the two rotating shaft holes.

Optionally, one of the first connection socket and the second connection socket is clamped on the housing and has a first position adjustment pre-degree in the left-right direction with the housing, and the first position adjustment pre-degree is used for adjusting the relative position of the one of the first connection socket and the second connection socket and the housing in the left-right direction.

Optionally, the other of the first connection socket and the second connection socket is inserted into the housing, and has a second position adjustment pre-degree with the housing along the up-down direction, where the second position adjustment pre-degree is used to adjust the relative position of the other of the first connection socket and the second connection socket and the housing along the up-down direction.

Optionally, one of the first connection socket and the second connection socket is provided with a matching portion, the housing is provided with a clamping portion and an unlocking switch, the clamping portion is clamped on the matching portion, and the unlocking switch is used for unlocking the clamping portion.

Optionally, any of the first adapter terminal group and any of the second adapter terminal group include a transmission signal adapter terminal and a shielding signal adapter terminal arranged around the transmission signal adapter terminal, the inner end of the transmission signal adapter terminal is in lap joint with the corresponding signal transmission line, the inner end of the shielding signal adapter terminal is in lap joint with the corresponding shielding line, and the outer end of the transmission signal adapter terminal and the outer end of the shielding signal adapter terminal are used for one-to-one corresponding external radio frequency interconnection.

Optionally, the outer end of the transmission signal adapter terminal and the outer end of the shielding signal adapter terminal are connected to each other by crimping in a one-to-one correspondence manner.

Compared with the prior art, the radio frequency connector provided by the invention integrates the signal transmission line on the circuit board, and simultaneously integrates the shielding lines around the signal transmission line on the circuit board, and the shielding lines prevent the signal transmission lines from interfering with each other, thereby not only reducing the volume, but also ensuring the service performance of the radio frequency connector, and being better applied to an RRU whole system.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is an exploded view of an rf connector according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the first connection socket in fig. 1;

fig. 3 is a schematic structural view of the rf connector shown in fig. 1 after being crimped with a function board;

FIG. 4 is a bottom view of the structure of FIG. 3;

FIG. 5 is a schematic front view of the RF connector of FIG. 3;

FIG. 6 is an exploded view of the circuit board of FIG. 5;

FIG. 7 is a schematic diagram of the structure of the signal transmission line in FIG. 5;

FIG. 8 is a schematic structural diagram of the wiring board of FIG. 5;

FIG. 9 is a schematic cross-sectional view of the RF connector shown in FIG. 5;

fig. 10 is a schematic cross-sectional view of the first connection socket of fig. 9;

fig. 11 is a schematic sectional view of the second connection socket of fig. 9.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 11 is:

the connector comprises a connector body 1, a circuit board 11, a 111 wiring board layer, a 112 terminal board layer, a 113 rotating shaft hole, a 114 rotating shaft, a 121 signal transmission line, a 122 shielding line, a 123 external terminal, a 124 hidden section, a 13 shell, a 2 first connecting seat, a 21 first switching terminal group, a 3 second connecting socket, a 31 second switching terminal group, a 41 matching part, a 42 clamping part, a 43 unfreezing switch, a 51 transmission signal switching terminal, a 52 shielding signal switching terminal and a 6 function board.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

The radio frequency connector according to some embodiments of the present invention is described below with reference to the accompanying drawings.

The radio frequency connector provided by the present application, as shown in fig. 1, 3, 5, 9 to 11, includes a connector body 1, a first connection socket 2 (shown in fig. 10) installed at one end of the connector body 1, and a second connection socket 3 (shown in fig. 11) installed at the other end of the connector body 1, where the connector body 1 includes a circuit board 11 (shown in fig. 8) and a plurality of circuit groups arranged on the circuit board 11, any of the circuit groups includes a signal transmission line 121 and a plurality of shielding lines 122 (shown in fig. 6) arranged around the signal transmission line 121, the plurality of shielding lines 122 and the signal transmission line 121 are preferably arranged in parallel to each other, the first connection socket 2 is provided with a plurality of first through-connection terminal groups 21, the second connection socket 3 is provided with a plurality of second through-connection terminal groups 31, and one end of the plurality of circuit groups performs radio frequency interconnection one-to-one correspondence through the plurality of first through-connection terminal groups 21, The other ends of the plurality of line groups are in one-to-one correspondence with the external radio frequency interconnection through the plurality of second through terminal groups 31.

According to the radio frequency connector provided by the invention, the signal transmission line 121 is integrated on the circuit board 11, the shielding lines 122 are integrated around the signal transmission line 121 on the circuit board 11, and the shielding lines 122 prevent the mutual interference among the signal transmission lines 121, so that the size is reduced, the use performance of the radio frequency connector is ensured, and the radio frequency connector can be better applied to an RRU whole system.

Alternatively, as shown in fig. 6, the circuit board 11 includes three wiring board layers 111, the three wiring board layers are stacked together, all the signal transmission lines 121 are distributed on the middle wiring board layer 111, all the shielding lines 122 are distributed on the two outer wiring board layers 111, so as to perform better structural layout on the signal transmission lines 121 and the shielding lines 122, and the plurality of shielding lines 122 perform omni-directional signal shielding around the signal transmission lines 121.

Preferably, the shielding wires 122 on the two outer wiring board layers 111 are symmetrically distributed, and the shielding wires 122 in any one of the wire groups are uniformly distributed around the signal transmission line 121.

Further, as shown in fig. 5 to 7, each of the signal transmission lines 121 includes a hidden section 124 and two external terminals 123, the circuit board 11 further includes a terminal board layer 112, the terminal board layer is disposed on an outer board surface of at least one of the two external wiring board layers 111, all the external terminals 123 are distributed on the outer board surfaces at two ends of the terminal board layer 112, and all the hidden sections 124 are distributed on the middle wiring board layer 111.

The outer side surfaces of the two ends of the terminal plate layer 112 are provided with a plurality of blind holes, the end portions of the hidden sections 124 are located in the blind holes in a one-to-one correspondence manner, and one end of the external terminal 123 is exposed while the other end thereof extends into the blind holes to be communicated with the hidden sections 124.

Such as: the first layer of the wiring board 11 from bottom to top is a terminal board layer 112, the second, third and fourth layers are three wiring board layers 111, and it is needless to say that a shield wire 122 (as shown in fig. 6) may be provided on the third layer (i.e., the middle wiring board layer 111).

Optionally, as shown in fig. 1 and fig. 3, the connector body 1 further includes a housing 13 penetrating up and down, the circuit board 11 is mounted in the housing 13 and can swing back and forth in the housing 13, that is, the circuit board 11 and the housing 13 have a third adjustment degree in the front-back direction, and the third adjustment degree is used for adjusting the placing angle of the circuit board 11 in the housing 13 so as to better align and connect with the first connection socket 2 and the second connection socket 3.

Wherein the one ends of the plurality of line groups are located at the lower through hole of the housing 13, and the other ends of the plurality of line groups are located at the upper through hole of the housing 13.

Specifically, as shown in fig. 5, 6 and 8, rotation shaft holes 113 are correspondingly formed in the middle portions of the left end surface and the right end surface of the circuit board 11, rotation shafts 114 are correspondingly formed in the middle portions of the inner wall surface of the left side and the inner wall surface of the right side of the housing 13, and the two rotation shafts 114 correspondingly extend into the two rotation shaft holes 113 to realize the front-back swing of the circuit board 11 in the housing 13.

Optionally, one of the first connection socket 2 and the second connection socket 3 is clamped on the housing 13 and has a first position adjustment pre-degree in the left-right direction with the housing 13, and the first position adjustment pre-degree is used for adjusting the relative position of the one of the first connection socket 2 and the second connection socket 3 and the housing 13 in the left-right direction. The other one of the first connection socket 2 and the second connection socket 3 is inserted into the housing 13, and a second position adjustment pre-degree along the up-down direction is provided between the other one of the first connection socket 2 and the second connection socket 3 and the housing 13, and the second position adjustment pre-degree is used for adjusting the relative position of the other one of the first connection socket 2 and the second connection socket 3 and the housing 13 in the up-down direction; thereby, the position error between the two function boards 6 connected is adapted, and the connection with the two function boards 6 is more smoothly performed.

Preferably, the first connection socket 2, the second connection socket 3 and the connector body 1 are of a split structure.

As shown in fig. 1, one of the first connection socket 2 and the second connection socket 3 is provided with a fitting portion 41, the housing 13 is provided with a locking portion 42 and an unlocking switch 43, the locking portion 42 is locked on the fitting portion 41, and the unlocking switch 43 is used for unlocking the locking portion 42 to separate the locking portion 42 from the fitting portion 41.

Optionally, as shown in fig. 2, each of the first adapter terminal group 21 and the second adapter terminal group 31 includes a transmission signal adapter terminal 51 and a shielding signal adapter terminal 52 disposed around the transmission signal adapter terminal 51, an inner end of the transmission signal adapter terminal 51 is overlapped with the corresponding signal transmission line 121, an inner end of the shielding signal adapter terminal 52 is overlapped with the corresponding shielding line 122, and an outer end of the transmission signal adapter terminal 51 and an outer end of the shielding signal adapter terminal 52 are used for one-to-one corresponding external radio frequency interconnection.

The external terminal 123, the two ends of the shielding wire 122, the transmission signal transfer terminal 51 and the shielding signal transfer terminal 52 have certain widths and lengths so as to adapt to the requirement of relative position change of the first connection socket 2, the housing 13 and the second connection socket 3, and the external terminal 123 and the transmission signal transfer terminal 51 corresponding to the first position adjustment range and the second position adjustment range, and the end of the corresponding shielding wire 122 and the shielding signal transfer terminal 52 are always in contact conduction.

Preferably, the shield wire is grounded.

Optionally, as shown in fig. 3 and 4, the outer end of the transmission signal adapter terminal 51 and the outer end of the shielding signal adapter terminal 52 are all connected to each other by external radio frequency in a one-to-one correspondence manner (connected to the function boards 6 by crimping, that is, one of the two function boards 6 is crimped to the first connection socket 2, and the other is crimped to the second connection socket 3), so that the connection difficulty is simplified, and the requirement of mass production is met.

In summary, the radio frequency connector provided by the invention integrates the signal transmission line on the circuit board, and integrates the plurality of shielding lines around the signal transmission line on the circuit board, and the shielding lines prevent the plurality of signal transmission lines from interfering with each other, thereby reducing the volume, ensuring the service performance of the radio frequency connector, and being better applicable to the entire RRU system.

In the description of the embodiments of the present invention, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description herein, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A radio frequency connector is characterized by comprising a connector body, a first connecting socket and a second connecting socket, wherein the first connecting socket is installed at one end of the connector body, the second connecting socket is installed at the other end of the connector body, the connector body comprises a circuit board and a plurality of circuit groups arranged on the circuit board, any circuit group comprises a signal transmission line and a plurality of shielding lines arranged on the periphery of the signal transmission line, a plurality of first switching terminal groups are arranged on the first connecting socket, a plurality of second switching terminal groups are arranged on the second connecting socket, one ends of the circuit groups are subjected to one-to-one corresponding external radio frequency interconnection through the first switching terminal groups, and the other ends of the circuit groups are subjected to one-to-one corresponding external radio frequency interconnection through the second switching terminal groups;

it is arbitrary signal transmission line all is including hiding section and two external terminals, the circuit board still includes the terminal plate layer, sets up on the outer face of at least one in two wiring plate layers in the outside, all external terminals distribute in on the outer face at the both ends of terminal plate layer, all hide the section and distribute in on the wiring plate layer in the middle.

2. The radio frequency connector according to claim 1, wherein the wiring board includes three wiring board layers, three wiring board layers are stacked together, all the signal transmission lines are distributed on a middle wiring board layer, and all the shield lines are distributed on two outer wiring board layers.

3. The rf connector according to any one of claims 1 to 2, wherein the connector body further includes a housing penetrating up and down, the circuit board is mounted in the housing and can swing back and forth in the housing, the one ends of the plurality of wire groups are located at a lower through hole of the housing, and the other ends of the plurality of wire groups are located at an upper through hole of the housing.

4. The radio frequency connector according to claim 3, wherein a rotation shaft hole is correspondingly formed in a middle portion of the left end face and the right end face of the circuit board, a rotation shaft is correspondingly formed in a middle portion of the inner wall face of the left side and the inner wall face of the right side of the housing, and the rotation shafts correspondingly extend into the rotation shaft holes.

5. The radio frequency connector according to claim 3, wherein one of the first connection socket and the second connection socket is clipped on the housing and has a first position adjustment pre-degree in a left-right direction with the housing, and the first position adjustment pre-degree is used for adjusting a relative position of the one of the first connection socket and the second connection socket and the housing in the left-right direction.

6. The rf connector of claim 5, wherein the other of the first connection socket and the second connection socket is inserted into the housing with a second position adjustment degree therebetween along the up-down direction, the second position adjustment degree being used for adjusting the relative position of the other of the first connection socket and the second connection socket and the housing in the up-down direction.

7. The radio frequency connector according to claim 5, wherein the one of the first connection socket and the second connection socket is provided with a fitting portion, the housing is provided with a card portion and a card release switch, the card portion is locked on the fitting portion, and the card release switch is used for releasing the card portion.

8. The rf connector according to any one of claims 1 to 2, wherein each of the first and second adaptor terminal sets includes a transmission signal adaptor terminal and a shielding signal adaptor terminal disposed around the transmission signal adaptor terminal, an inner end of the transmission signal adaptor terminal is overlapped with the corresponding signal transmission line, an inner end of the shielding signal adaptor terminal is overlapped with the corresponding shielding line, and outer ends of the transmission signal adaptor terminal and the shielding signal adaptor terminal are used for one-to-one external rf interconnection.

9. The radio frequency connector of claim 8, wherein the outer end of the transmission signal adapter terminal and the outer end of the shielding signal adapter terminal are all connected to each other by crimping in a one-to-one correspondence manner.