Patent ID: 7058425
Filing Date: 2006-06-06
Classification: F24F,H01Q,H04B

Abstract:
1. A communication apparatus that transmits a signal with a directivity using an array antenna comprising a plurality of antennas, said communication apparatus comprising: a generator that generates, on a per antenna basis, a transmission signal and a gain control signal for controlling a gain of the transmission signal; a plurality of amplifiers that are disposed in one-to-one correspondence with said plurality of antennas and that each amplify the transmission signal with a gain in accordance with the gain control signal; an attenuator that attenuates an output signal of the amplifiers; an error detector that calculates an input-output error of the amplifiers from an input signal to the amplifiers and an output signal of the attenuator; and a plurality of correctors that are disposed in one-to-one correspondence with said plurality of antennas and that each correct the transmission signal and the gain control signal generated by the generator so as to eliminate the error.