| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna measuring device and a measuring method capable of measuring precisely excitation amplitudes and phases of each antenna element in consideration of amplitudes and phase errors of phase shifters. SOLUTION: This device is equipped with an array antenna 5 including element antennas 41-4N, phase shifters 31-3N connected to the antennas respectively and phase shifting means 51-5N for realizing two phase states, a facing antenna 6 installed facing to the antenna, a transmitter 7 and a receiver 8 for radiating a signal from one side to the other side of the array antenna and the facing antenna and for receiving the radiated signal, a phase shifter control device 1 for controlling the phase shifters and the phase shifting means based on the received output, an operation circuit 9 for measuring the amplitude and the phase change of a combined electric field of the array antenna based on the received output when phase setting of each phase shifter is changed, and an operation circuit 10 for estimating the amplitudes and the phase errors of each phase shifter from the measurement result of the operation circuit and for obtaining the relative amplitude and the phase of a radiated electric field relative to each element antenna.
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