Patent ID: 7937050

Claim:
A wireless communication apparatus for transmitting a transmitting signal, the wireless communication apparatus comprising: a direct current generator, for generating a direct current signal; and a transmitter, coupled to the direct current generator, the transmitter comprising: an oscillating signal generator, for generating an oscillating signal; a mixer, coupled to the oscillating signal generator, for mixing one of the direct current signal and the transmitting signal with the oscillating signal according to a mode signal and generating a mixed signal; and an amplifying module, coupled to the mixer, for amplifying the mixed signal to generate an output signal; wherein when the mode signal is represented that the wireless communication apparatus is under test, the direct current signal is being mixed with the oscillating signal and the mixed signal is a sinusoidal wave; when the mode signal is represented that the wireless communication apparatus is under transmitting, the transmitting signal is being mixed with the oscillating signal and the mixed signal is a modulated signal.