An adaptive array apparatus includes a control unit 50 and a plurality of radio units 10.about.40 that each have a modulator 11, a transmission circuit 12, a switch 13, a phase detecting unit 14, a reception circuit 15, and a demodulator 16. For each radio unit 10.about.40, the control unit 50 compensates a phase amount for generating a directivity pattern used for an output signal according to a difference in phase shift amounts between a transmission subsystem and a reception subsystem.