Phase shifting circuit, phase shifter and antenna

Abstract

The invention discloses a phase shifting circuit, a phase shifter and an antenna. The phase shifting circuit includes a fixed circuit and a moving circuit. The fixed circuit is provided with a power dividing circuit and a phase shifting circuit. The power dividing circuit has an input terminal, a first output terminal and a second Two output terminals, the phase-shifting circuit corresponds to the second output terminal, and the phase-shifting circuit is an open circuit setting; the mobile circuit can move relative to the fixed circuit, and the mobile circuit is provided with a mobile line, and when the mobile circuit moves relative to the fixed circuit, the mobile circuit can be connected to the phase-shift The line is coupled and the phase-shifting line is switched from an open state to a connected state. In the phase-shift mode, the mobile line is coupled with the phase-shift line, so that the phase-shift line is switched from open to connected; in the wide beam mode, there is no coupling between the mobile line and the phase-shift line, and the phase-shift line is in an open state. When the signal is input from the input terminal, it can only be output through the first output terminal, and fewer antenna elements are connected, so that the beam width of the antenna is wider.

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 phase shifter, or There is a switch inside the phase shifter and the structure to drive the switch. The size is large. Although it can meet the requirements of some small stations, it is difficult to meet the current situation that needs to be deployed on a large-scale array antenna.

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