RADIO TRANSMITTER AND TRANSMISSION DIRECTIVITY ADJUSTING METHOD

摘要

A reference signal is modulated by a modulating circuit (101), and the modulated signal is multiplied by a transmission weight. The resultant signal is subjected to radio transmission processing by transmission RF circuits (109 to 111). The reference signals are combined by a synthesizing circuit (119), and the synthesized signal is compared with the original reference signal by a correction control circuit (121). Thus, the corrections for phase and amplitude are determined. The phase and amplitude of the transmission signal are adjusted by using the corrections.