| 摘要 |
A calibration method, which allows calibration with high precision and which can perform calibration normally even when a specific radio receiving portion has a problem, and an array antenna receiving apparatus using the method. The array antenna receiving apparatus multiplexes calibration signals having predetermined symbol patterns from a multiplexing circuit (103) to signals received by array antennas (101) and inputs the results to radio receiving portions (104). The calibration signals having passed through the radio receiving portions are extracted by a calibration signal extracting portion (110), and an SIR detecting portion (111) determines one of the radio receiving portions having the best receiving quality as a reference branch based on the calibration signals. A calibration signal processing portion (109) corrects receiving-oriented patterns by using the phase differences and amplitude ratios between the calibration signal having passed through the obtained reference branch and the calibration signals having passed through the other radio receiving portions. <IMAGE>
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