Radio transmission device and transmission directivity adjusting method

摘要

A reference signal is modulated in a modulation circuit 101. The modulated reference signal is multiplied by a transmission weight before being performed radio transmission processing at transmission RF circuits 109 to 111. Respective reference signals are combined at a combining circuit 119. Then, the combined reference signals are compared with original reference signal at a correction value control circuit 121. On the basis thereof, respective correction values of a phase and an amplitude are obtained. A radio transmission device adjusts the phase and the amplitude of transmission signal while employing the correction values.