Patent ID: 7184734

Claim:
A radio communication apparatus having an array antenna made up by a plurality of antenna elements and an inter-array signal compositing unit for compositing signals received at the antenna elements together, the radio communication apparatus comprising: a first radio circuit section for conveying the signals received at the antenna elements to the inter-array signal compositing unit; a second radio circuit section for conveying the received signals; a first channel estimating unit for determining a channel estimation value of a signal conveyed through the first radio circuit section; a second channel estimating unit for determining a channel estimation value of a signal conveyed through the second radio circuit section; a power detecting unit for detecting a power from an output of the first channel estimating unit; an operating unit for detecting an amplitude ratio and phase rotation amount from outputs of the first and second channel estimating units; and a correction-value detecting unit for detecting a correction value for correcting an amplitude deviation and phase deviation occurring on the first and second radio circuit sections, from outputs of the power detecting unit and operating unit.