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

摘要

The beamforming circuit includes 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 amplifies the first RF intermediate signal generated based on the first RF input signal in the transmission mode to generate a first RF output signal, and performs a first transmission gain adjustment function based on the first control signal do. The variable gain low noise amplifier amplifies the second RF input signal in the reception mode to generate a second RF intermediate signal, and performs a first reception gain adjustment function based on the second control signal. The variable gain phase shifter generates the first RF intermediate signal by adjusting the gain and phase for the first RF input signal at a time in the transmission mode, and the second transmission gain adjustment function and the transmission phase adjustment function based on the third control signal Performs all at once, and adjusts the gain and phase for the second RF intermediate signal in the receive mode at one time to generate the second RF output signal and the second receive gain adjustment function and the receive phase based on the third control signal. Perform the adjustment function at once. The first switch circuit receives the first RF input signal in the transmission mode, and outputs the second RF output signal in the reception mode.