WAVEGUIDE- AND CAVITY-BACKED ANTENNA ARRAYS WITH DISTRIBUTED SIGNAL AMPLIFIERS FOR TRANSMISSION OF A HIGH-POWER BEAM

摘要

An antenna that has phase-shifting ability without expensive and large phase shifters includes a cavity, signal couplers, and antenna elements. The cavity is configured to reinforce a reference signal, and each of the signal couplers is configured to generate a respective intermediate signal in response to the reference signal at a respective location of the cavity. And each of the antenna element is configured to radiate a respective element signal in response to an intermediate signal from a respective one of the signal couplers.