| 摘要 |
An array antenna transmitter/receiver has an array antenna (10) composed of antenna elements and radio transmitting/receiving units (30-1 to 30-n) provided to the respective antenna elements, wherein calibration signals are generated at given time intervals in a burst, the calibration signals are subjected to frequency conversion, the frequency-converted calibration signals are fed to the radio transmitting/receiving units (30-1 to
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