Optical control type phased array antenna apparatus equipped with

Abstract

Disclosed is an optical control type phased array antenna apparatus having an array antenna of antenna elements. An optical signal processor optically processes input high-frequency signals, and outputs optically processed signals including signal components having phases corresponding to directions in which radio wave signals come and having frequencies equal to those of the input high-frequency signals. Then, each frequency converter mixes a received signal with the optically processed signal in correspondence with the antenna element, and outputs a frequency-converted signal having a frequency of a difference between a frequency of the received signal and a frequency of the optically processed signal. Further, a combiner combines the frequency-converted signals. When reference signals each having a frequency that differs from the frequency of the corresponding radio wave signal by an intermediate frequency are inputted to the optical signal processor as the input high-frequency signals, intermediate frequency signals having the intermediate frequencies and corresponding to the radio wave signals are outputted as received signals from the combiner.