ACTIVE PHASED ARRAY TRANSMITTER, ACTIVE PHASED ARRAY RECEIVER AND ACTIVE PHASED-ARRAY TRANSMITTER-RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide an active phased array transmitter capable of performing high-precision calibration.SOLUTION: An active phased array transmitter has: a transmission frequency signal source 11 which generates a transmission frequency signal; a modulator 12 which outputs the transmission modulation signal; a plurality of transmission units 13A-13N, 14A-14N which change the phase and intensity of the transmission modulation signal, respectively; a transmission phased array antenna including a plurality of transmission antennas 15A-15N; a local transmission frequency signal source 31; a first mixer 32 which generates a first intermediate frequency transmission signal from reception signals of output radio waves of the transmission antennas and a local transmission frequency signal; a second mixer 41 which generates a second intermediate frequency transmission signal from a transmission modulation signal and the local transmission frequency signal; a transmission correlation processing part 43 which detects transmission correlation relationship between the first and second intermediate frequency transmission signals; and transmission relative relationship detection parts 44, 45 which detect transmission relative relationship of phases and intensities of radio waves from the plurality of transmission antennas from the transmission correlation relationship.SELECTED DRAWING: Figure 5