| 摘要 |
PURPOSE: To perform highly accurate calibration even when an array antenna receiver is operated. CONSTITUTION: A calibration signal generated by a signal generator 107 for calibration and subjected to frequency conversion by a radio transmitting part 108 for calibration is made to have a power level where the power level of a calibration signal extracted by a signal processing part 106 for calibration is made constant in power level variable circuits 109-1 to 109-N, and is multiplexed to a signal received by antenna elements 102-1 to 102-N in multiplexing circuits 103-1 to 103-N.
|
