CN-122026037-A - Phase shifter

CN122026037ACN 122026037 ACN122026037 ACN 122026037ACN-122026037-A

Abstract

The application provides a phase shifter which comprises a circuit board, a substrate and a plurality of cables. Each of the plurality of cables includes a first insulating layer, an outer conductor layer, and an inner conductor layer. The first insulating layer is sleeved on the outer conductor layer. The outer conductor layer and the inner conductor layer are disposed apart from each other. The circuit board is electrically connected with each inner conductor layer. The substrate comprises a plurality of sleeves for grounding, the circuit board is arranged on the substrate, at least one part of each cable penetrates through at least one sleeve among the plurality of sleeves, and the first insulating layer of each cable is positioned between the outer conductor layer and the corresponding sleeve and forms electric coupling between the outer conductor layer and the corresponding sleeve. The application solves the problem of complex working procedures in the connection of the cable outer conductor and the PCB of the traditional phase shifter.

Inventors

ZHOU ZHENGGUO
XU CHENGYU
ZHANG WANQIANG

Assignees

苏州立讯技术有限公司

Dates

Publication Date: 20260512
Application Date: 20230901

Claims (14)

1. A phase shifter, comprising: a plurality of cables, each cable of the plurality of cables comprising: A first insulating layer; an outer conductor layer, the first insulating layer is sleeved on the outer conductor layer, and The inner conductor layer, the said outer conductor layer and said inner conductor layer are set up mutually apart; a circuit board electrically connected to each of the inner conductor layers, and The circuit board is arranged on the substrate, the bottom surface of the circuit board is propped against the upper surface of the second lining plate, the upper surface of the first lining plate and the upper surface of the second lining plate are coplanar, at least one part of each cable penetrates through at least one sleeve among the plurality of sleeves, and the first insulating layer of each cable is positioned between the outer conductor layer and the corresponding sleeve and forms electric coupling between the outer conductor layer and the corresponding sleeve.
2. The phase shifter of claim 1, wherein each of the cables is disposed corresponding to two of the sleeves spaced apart.
3. The phase shifter of claim 1, wherein the mating relationship of each sleeve and the corresponding first insulating layer is a transition fit.
4. The phase shifter according to claim 1, wherein a capacitive coupling is formed between the outer conductor layer of each of the cables and the corresponding sleeve, the thickness d of the first insulating layer satisfying the following relationship, , Wherein a=2pi rL, r is the inner diameter of the sleeve, L is the length of the sleeve, f is the working frequency of the capacitor formed by the outer conductor layer, the first insulating layer and the corresponding sleeve, epsilon r is the relative dielectric constant of the first insulating layer, and epsilon 0 is the absolute dielectric constant.
5. The phase shifter according to claim 1, wherein the number of the first liners is plural, and a plurality of the cables and a plurality of the bushings are provided on each of the first liners.
6. The phase shifter of claim 1, wherein the sleeve includes an inner tube that is sleeved over the corresponding first insulating layer, a portion of the inner tube being configured to be lower than the first liner plate such that the inner conductor layer abuts against the circuit board in a radial direction of the inner conductor layer.
7. The phase shifter of claim 6, wherein the inner tube is a metal layer provided on an inner side wall of the sleeve, or wherein the inner tube is an inner side wall of the sleeve, and wherein the sleeve is entirely made of a metal material.
8. The phase shifter of claim 6, wherein the first insulating layer, the inner tube, and the inner conductor layer are coaxially disposed.
9. The phase shifter according to claim 1, wherein the first liner plate comprises a plurality of grooves, each groove and each cable are arranged in a one-to-one correspondence, the first insulating layer of each cable is abutted against the corresponding groove along the radial direction thereof, and the shape of each first insulating layer is adapted to the shape of the corresponding groove.
10. The phase shifter of claim 9, wherein each of the grooves is disposed corresponding to two of the spaced apart sleeves, each groove being located between a corresponding two of the spaced apart sleeves, each of the cables passing through a corresponding one of the grooves and a corresponding one of the spaced apart sleeves.
11. The phase shifter of claim 1, wherein the circuit board comprises a ground layer and a second insulating layer, the ground layer, the second insulating layer, and the second liner are disposed in sequence in abutment.
12. The phase shifter of claim 1, further comprising a phase shifting assembly, wherein the circuit board is provided with a plurality of microstrip lines, wherein the phase shifting assembly is disposed on the circuit board and electrically connected to the plurality of microstrip lines, and wherein each microstrip line of the plurality of microstrip lines is connected to the inner conductor layer of the corresponding cable.
13. The phase shifter of claim 12, wherein the cable further comprises a third insulating layer between the outer conductor layer and the inner conductor layer, the inner conductor layer extending outwardly from the third insulating layer toward the circuit board to form an inner conductor layer exposed section, the inner conductor layer exposed section connecting the microstrip line, the third insulating layer extending outwardly from the outer conductor layer toward the circuit board to form a third insulating layer exposed section, the third insulating layer exposed section abutting the circuit board.
14. The phase shifter of claim 13, wherein the outer conductor layer extends outwardly from the first insulating layer toward the circuit board to form an outer conductor layer exposed section, the outer conductor layer exposed section and the circuit board being spaced apart from each other, and wherein the first insulating layer extends outwardly from the corresponding sleeve toward the circuit board to form a first insulating layer exposed section, the first insulating layer exposed section and the circuit board being spaced apart from each other.

Description

Phase shifter The application relates to a divisional application, the application date of the original application is 2023, 09 and 01, the application number is 2023111205786, and the application name is a phase shifter. Technical Field The application relates to the technical field of wireless communication, in particular to a phase shifter. Background In order to achieve a signal coverage distance that is variable, adjustable electronic downtilt can be used in the base station antenna to achieve radiation at different tilt angles of the signal. For example, the phase of the phase shifter of the base station antenna can be changed to adjust the beam inclination angle of the signal radiation, so that the adjustment of the radiation coverage area by the base station antenna is realized. The phase shifter includes a cable, a solder clip, a PCB, and a backing plate. The outer conductor of the cable is welded with the welding wire clamp, the welding wire clamp is welded with the grounding surface on the PCB, and the grounding surface on the PCB is welded with the lining plate, so that the cable is grounded. However, when the wire is clamped and soldered to the outer conductor of the cable, the process is complicated, and a large number of man-hours are required, which complicates the process when the cable is connected to the PCB. Therefore, the connection between the cable outer conductor and the PCB of the conventional phase shifter has a problem of complicated process. Disclosure of Invention The application aims to provide a phase shifter which enables a connecting process of a cable outer conductor and a circuit board to be simpler. Each of the plurality of cables includes a first insulating layer, an outer conductor layer, and an inner conductor layer. The first insulating layer is sleeved on the outer conductor layer. The outer conductor layer and the inner conductor layer are disposed apart from each other. The circuit board is electrically connected with each inner conductor layer. The base plate includes a plurality of sleeve pipes, first welt and the second welt that ground connection was used, the circuit board set up in the base plate, just the bottom surface of circuit board support in the upper surface of second welt, the upper surface of first welt with the upper surface coplane of second welt, every at least a portion of cable wears to locate at least one sleeve pipe in a plurality of sleeve pipes, every the first insulating layer of cable is located between outer conductor layer and the corresponding sleeve pipe and be in outer conductor layer and the corresponding form electric coupling between the sleeve pipe. Optionally, each of the cables is arranged corresponding to two spaced apart sleeves. Optionally, the mating relationship between each sleeve and the corresponding first insulating layer is transition fit. Optionally, a capacitive coupling is formed between the outer conductor layer of each of the cables and the corresponding sleeve, the thickness d of the first insulating layer satisfying the following relation, , Wherein a=2pi rL, r is the inner diameter of the sleeve, L is the length of the sleeve, f is the working frequency of the capacitor formed by the outer conductor layer, the first insulating layer and the corresponding sleeve, epsilon r is the relative dielectric constant of the first insulating layer, and epsilon 0 is the absolute dielectric constant. Optionally, the base plate further includes a first liner plate and a second liner plate, each sleeve is disposed on the first liner plate, and the first liner plate is connected with the second liner plate. Optionally, the number of the first lining boards is multiple, and each first lining board is provided with multiple cables and multiple sleeves. Optionally, the first lining board and the second lining board are detachably connected. Optionally, the sleeve includes an inner tube, the inner tube is sleeved on the corresponding first insulating layer, and a part of the inner tube is configured to be lower than the first lining plate so that the inner conductor layer abuts against the circuit board along the radial direction of the inner conductor layer. Optionally, the inner tube is a metal layer arranged on the inner side wall of the sleeve, or the inner tube is the inner side wall of the sleeve, and the whole sleeve is made of a metal material. Optionally, the first insulating layer, the inner tube and the inner conductor layer are coaxially arranged. Optionally, the first lining plate includes a plurality of recesses, each recess and each cable one-to-one sets up, every the first insulating layer of cable radially supports along its and pushes up in corresponding recess, each the shape of first insulating layer and the shape looks adaptation of corresponding recess. Optionally, each groove is disposed corresponding to two spaced sleeves, each groove is disposed between two corresponding spaced sleeves, and each cable is