Liquid-crystal phase shifter and antenna

Abstract

The invention embodiment provides a liquid-crystal phase shifter and an antenna, which relates to the field of electromagnetic wave technology, and can adjust the carrier frequency applicable to the liquid-crystal phase shifter, thereby improving the compatibility of the liquid-crystal phase shifter. The liquid crystal phase shifter comprises: at least one phase shifter cell, wherein the phase shifter cell comprises a microstrip line, a phase controlled electrode and two feed terminals, the microstrip line is located between a first substrate and a liquid crystal layer, the phase controlled electrode is located between a second substrate and the liquid crystal layer, two ends of the microstrip line respectively overlap the two feed terminals in a direction perpendicular to the plane wherethe first substrate is located; the phase controlled electrode comprises at least two sub-electrodes arranged at an interval, the microstrip line comprises active lines corresponding to each sub-electrode, wherein each sub-electrode covers a corresponding active line in a direction perpendicular to the plane of the first substrate.

Description

technical field [0001] The invention relates to the technical field of electromagnetic waves, in particular to a liquid crystal phase shifter and an antenna. Background technique [0002] A phase shifter is a device that can adjust the phase of electromagnetic waves. It is widely used in radar, spacecraft attitude control, accelerators, communications, instrumentation, and even music. [0003] With the development of technology, a new type of liquid crystal phase shifter has appeared. However, with the current design of liquid crystal phase shifters, if the carrier frequency of the liquid crystal phase shifter needs to be adjusted, a new liquid crystal phase shifter needs to be used, that is, Liquid crystal phase shifters are less compatible. Contents of the invention [0004] Embodiments of the present invention provide a liquid crystal phase shifter and an antenna, which can adjust the carrier frequency applicable to the liquid crystal phase shifter, thereby improving t...

AI Technical Summary

Problems solved by technology

[0003] With the development of technology, a new liquid crystal phase shifter has appeared, however, the current liquid crystal phase shifter design, if you need to adjust the carrier frequency of the liquid crystal phase shifter, you need to use a new liquid crystal phase shifter, that is, The compatibility of liquid crystal phase shifter is poor

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