5G BEAM-FORMING CIRCUIT FOR 5G MOBILE COMMUNICATION AND RADAR

摘要

A beamforming circuit comprises a multi-mode power amplifier, a variable gain low noise amplifier, a variable gain phase shifter, and a first switch circuit. The multi-mode power amplifier generates a first RF output signal by amplifying a first RF intermediate signal generated on the basis of a first RF input signal in a transmission mode, and performs a first transmission gain adjustment function on the basis of a first control signal. The variable gain low noise amplifier amplifies a second RF input signal in a reception mode to generate a second RF intermediate signal, and performs a first reception gain adjustment function on the basis of a second control signal. The variable gain phase shifter generates a first RF intermediate signal by adjusting a gain and phase for a first RF input signal at a time in a transmission mode, performs a second transmission gain adjustment function and a transmission phase adjustment function at a time on the basis of a third control signal, generates a second RF output signal by adjusting a gain and phase for a second RF intermediate signal at a time in a reception mode, and performs a second reception gain adjustment function and a reception phase adjustment function on the basis of the third control signal. The first switch circuit receives a first RF input signal in a transmission mode and outputs a second RF output signal in a reception mode.