Phase shift circuit, phase shifter and antenna

Abstract

The invention discloses a phase shift circuit, a phase shifter and an antenna, the phase shift circuit comprises a fixed circuit and a mobile circuit, the fixed circuit is provided with a power division line and a phase shift line, the power division line is provided with an input terminal, a first output terminal and a second output terminal, the phase shift line corresponds to the second output terminal, and the phase shift line is arranged in an open circuit; the mobile circuit can move relative to the fixed circuit, the mobile circuit is provided with a mobile line, and when the mobile circuit moves relative to the fixed circuit, the mobile line can be coupled with the phase shift line and enables the phase shift line to be switched from an open circuit state to a connected state. In the phase-shifting mode, the mobile line is coupled with the phase-shifting line, so that the phase-shifting line is switched from an open circuit to a connected circuit; in the wide beam mode, coupling is not generated between the mobile line and the phase shift line, the phase shift line is in an open circuit state, at the moment, a signal can only be output through the first output terminal after being input from the input terminal, and fewer antenna units are connected, so that the beam width of the antenna is relatively wide.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a phase shifting circuit, a phase shifter and an antenna. Background technique [0002] The mobile communication base station antenna is an important part of the wireless communication system and plays a key role in the entrance and exit of wireless communication. The performance and quality are directly related to the customer's perception and the communication quality of the entire system. With the continuous development of mobile communication technology, on the one hand, antennas are developing in the direction of multi-frequency bands and large-scale array antennas; on the other hand, for some special scenarios, different functional requirements are put forward for antennas, such as high-rise buildings, commercial streets, etc. For in-depth coverage and blind filling in a field, the electronically adjustable antenna needs to be able to switch to a fixed wide ...

AI Technical Summary

Problems solved by technology

[0003] For electronically adjustable antennas, the width of the vertical beam is generally fixed, and the corresponding coverage area is also relatively fixed, so the beam switching function cannot be satisfied; while the traditional beam switching module is generally set outside the

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