Patent ID: 8036299

Claim:
A wireless communication apparatus having a multi-antenna configuration including three or more branches each including an antenna element, a transmission analog portion, and a reception analog portion, the wireless communication apparatus being characterized by comprising: reference branch setting means for setting any one of the branches to a reference branch; forward loopback transfer function acquiring means for acquiring a forward loopback transfer function of a path for transmission to a respective other branch from the reference branch; backward loopback transfer function acquiring means for acquiring a backward loopback transfer function of a path for transmission to the reference branch from the respective other branch than the reference branch; calibration factor calculating means for calculating a calibration factor for the respective branch of the branches inclusive of the reference branch in accordance with the forward loopback transfer function and the backward loopback transfer function; and calibration factor correcting means for correcting for an error contained in the calibration factor for the reference branch.