Filter Phase Shifter and Antenna

Abstract

The invention relates to a filtering phase shifter and an antenna. The filtering phase shifter comprises a fixed circuit, an auxiliary conductor transmission section and a movable circuit. The movablecircuit moves relative to a first carrier plate to enable a second transmission line to move in or out of a containing cavity, the coupling amount between a movable line layer and a fixed line layerand the coupling amount between the movable line layer and the auxiliary transmission conductor section can be changed, and therefore the electrical length of signal transmission in the filtering phase shifter is changed, and phase adjustment of the output port is achieved. In addition, a filtering stub is additionally arranged in a movable circuit of a U-shaped transmission line type phase shifter, so that the integrated design of a filter and a phase shifter is realized. In addition, input signals are subjected to filtering and phase shifting at the same time, the space utilization rate is increased, and the size is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a filter phase shifter and an antenna. Background technique [0002] In the context of 5G mobile communication, the phase shifter can change the phase distribution of each radiating unit in the array antenna, thereby changing the downtilt angle of the beam, so as to realize the beamforming and optimal coverage of the electrically adjustable antenna. At present, the commonly used mechanical phase shifters are divided into dielectric sliding type phase shifters and transmission line sliding type phase shifters. With the development of miniaturized multi-frequency electronically adjustable antennas, the integration of electronic devices is getting higher and higher, which puts forward higher requirements for the volume of various radio frequency devices. Traditionally, most electronically tunable antennas use independent filters and phase shifters. Although inter-freq...

AI Technical Summary

Problems solved by technology

Traditionally, most electronically adjustable antennas use independent filters and phase shifters. Although inter-frequency isolation and phase adjustment can be achieved, the filter and phase shifter are designed in separate layouts, which makes the whole machine larger

Images