Patent ID: 7502592

Claim:
An adaptive antenna apparatus comprising: a plurality of antenna elements; an adaptive controller for adaptively controlling respective received signals received by said plurality of antenna elements, and for outputting adaptively-controlled respective received signals as a combined received signal; a demodulator for demodulating the combined received signal into a demodulated signal, and for demodulating the respective received signals received separately by respective antenna elements into demodulated signals; and an apparatus controller for comparing signal quality of the demodulated signal of the combined received signal with signal qualities of the demodulated signals of the respective received signals received separately by the respective antenna elements, respectively, selecting a demodulated signal having the highest signal quality, and controlling to receive a received signal including a selected demodulated signal, wherein said plurality of antenna elements comprises three or more antenna elements, wherein said adaptive controller adaptively controls respective received signals received by all of said three or more antenna elements and outputs respective adaptively-controlled received signals as a first combined received signal, and said adaptive controller adaptively controls respective received signals received by antenna elements of a part of said three or more antenna elements and outputs respective adaptively-controlled received signals as a second combined received signal, and wherein said apparatus controller compares signal quality of a demodulated signal of the first combined received signal, signal quality of a demodulated signal of the second combined received signal, and the signal qualities of the demodulated signals of the respective received signals received separately by the respective antenna elements, selects a demodulated signal having the highest signal quality, and controls to receive a received signal including a selected demodulated signal.