A wireless communication apparatus includes a plurality of phase adjusters configured to adjust the phase of a digital baseband signal d(k) for k=1, 2, . . . , K (K is a natural number equal to or larger than one) and output a plurality of digital signals d1(k), d2(k), dm(k) (m is a natural number equal to or larger than two) having phases different from each other, an i-th converter configured to convert a signal obtained by synthesizing the digital signals di(1), di(2), . . . , di(K) into an analog signal ai for i=1, 2, . . . , m, and a power supply circuit including a first stage circuit, a second stage circuit, . . . , an N-th stage circuit (N is a natural number equal to or larger than one).