Switch-type phase shifter

Abstract

A switch-type phase shifter including a phase shifting unit is provided. The phase shifting unit includes two half circuits and a first switch connected to the half circuits and receiving a first control signal. Each half circuit includes a first variable capacitor, a second variable capacitor, a second switch and a variable inductor. The first end and second end of the first variable capacitor are coupled to the input end and the control end of the half circuit respectively. The first end and second end of the second variable capacitor are coupled to the output end and control end of the half circuit respectively. The first and second ends of the second switch are coupled to the output end and input end of the half circuit respectively, and the third end of the second switch is coupled to the control end of the half circuit and receives a control signal. The first end and the second end of the variable inductor are coupled to the input end and output end of the half circuit respectively.

Description

Technical field[0001]The present disclosure relates to a phase shifter, particularly a switching phase shifter.Background technique[0002]Due to the advancement of science and technology, the development of communication technology has also been changing. 5th generation mobile communication technology (5thgeneration Mobile Networks) can effectively increase data transmission rate, reduce delay, save energy, reduce costs and improve system capacity, have become world countries Mainstream communications technology for development. The fifth-generation mobile communication technology is mainly applied to low frequency (below 6GHz) and millimeter wave band, and the phase array system is one of the important technologies in millimeter wave band applications.[0003]The phase shifter is an important component in the phase array system, so the design of the phase shifter has a great impact on the beamforming capability of the phase array system. The application frequency band of the fifth gen...

AI Technical Summary

Problems solved by technology

The application frequency band of the fifth-generation mobile communication technology may include 28GHz and 39GHz, etc.; however, the phase shifter has a bandwidth limitation, which makes the phase shifter have poor characteristics in certain frequency bands, thus also affecting the beamforming of the phased array system ability

The farther the operating frequency is from the center frequency, the greater the RMS phase error and RMS gain error of the phase shifter, so the phase shifter cannot achieve good characteristics in multiple frequency bands

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