Integrated multipath dielectric phase shifter

Abstract

The invention provides an integrated multipath dielectric phase shifter. The integrated multipath dielectric phase shifter comprises a cavity (10), a first dielectric plate (301), a second dielectric plate (302) and a PCB (90), wherein holes are formed in the two ends of the cavity (10); guide rail grooves are respectively formed in the two side walls of the cavity (10); the PCB (90) is fixedly arranged in the cavity (10) through the guide rail grooves; feeder lines (80) are symmetrically attached to the upper surface and the lower surface of the PCB (90); metallized via holes (11) are formed inside the PCB (90); the first dielectric plate (301) and the second dielectric plate (302) are symmetrically arranged, respectively cover the upper surface and the lower surface of the PCB (90) and slides in the longer side wall direction of the cavity; through holes corresponding to the feeder lines (80) are formed in the first dielectric plate (301) and the second dielectric plate (302). The phase shifter disclosed by the invention is low in profile, small in size, less in parts and high in erecting welding consistency.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a dielectric phase shifter for changing the phase of a transmission signal. Background technique [0002] The phase shifter is the core component of the electronically adjustable antenna. The development of mobile communication base station antennas has put forward higher requirements for phase shifters, such as smaller volume, wider operating frequency band, better intermodulation performance and easier processing technology. In the prior art, the dielectric phase shifter changes the propagation rate of the signal by moving the medium in the phase shifter, thereby realizing phase shifting. [0003] But, the medium phase shifter of prior art, for example the medium phase shifter of patent No. CN102544733B, see Figure 9 , including a power splitter group, a transmission line and several dielectric phase shifters, the power splitter group includes a maste...

AI Technical Summary

Problems solved by technology

[0004] 1. When the multi-channel phase shifter composed of this type of phase shifter unit is used for the electric adjustment antenna of the base station in a multi-unit array, the length of the phase shifter is long and the occupied area is too large, which is very unfavorable for the antenna feed network. overall arrangement

[0005] 2. There are too many components of the phase shifter, and the assembly is complicated, which leads to the difficulty and consistency of the assembly of the base station electronically adjustable antenna, and the manufacturing cost is relatively high.

Images