Phase shifter and antenna

Abstract

The phase shifter comprises a substrate, a coplanar waveguide transmission line arranged on the substrate and at least one capacitance bridge arranged on the side, away from the substrate, of the coplanar waveguide transmission line, and the coplanar waveguide transmission line comprises a first ground wire and a second ground wire which are oppositely arranged. The first ground wire and the second ground wire are insulated from each other, at least one of the first ground wire and the second ground wire comprises an anchor point area, a peripheral area and an insulation area separating the anchor point area from the peripheral area, and the at least one capacitance bridge is electrically connected with the anchor point area.

Description

technical field [0001] Embodiments of the present disclosure relate to but are not limited to the technical field of communication, and specifically relate to a phase shifter and an antenna. Background technique [0002] With the rapid development of the information age, wireless terminals with high integration, miniaturization, multi-function and low cost have gradually become the development trend of communication technology. In communications and radar applications, phase shifters are essential and critical components. Traditional phase shifters mainly include ferrite phase shifters and semiconductor phase shifters. Among them, ferrite phase shifters have large power capacity and relatively small insertion loss, but the process is complicated, the manufacturing cost is expensive, and the volume is large. Factors limit its large-scale application; the semiconductor phase shifter is small in size and fast in working speed, but its power capacity is relatively small, its po...

AI Technical Summary

Problems solved by technology

However, in the specific working process of the MEMS phase shifter, due to the change of capacitance, it will produce obvious phase modulation parasitic amplitude modulation phenomenon.

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