Patent ID: 7295157

Claim:
An array antenna receiver device comprising: a plurality of antenna elements; a means for outputting calibration signals; a means for distributing the calibration signals to the plurality of the antenna elements; a plurality of multiplexing means each of which multiplexes each calibration signal distributed with a signal input from each of the plurality of the antenna elements; a plurality of SIR calculating means each of which extracts and demodulates each calibration signal from an output signal of the multiplexing means to calculate a SIR (Signal to Interference Ratio) value, and further compares the SIR value calculated with a previously established SIR threshold value thereby to output reception branch information and a demodulation result of the calibration signal only when the SIR value calculated exceeds the SIR threshold value; a means for storing a reference demodulation result which is previously established in each reception branch; a means for detecting a calibration amount of amplitude/phase information in each reception branch based on the demodulation result and the reference demodulation result in a branch corresponding to the storing means; and means for correcting a user signal based on the calibration amount.