| 摘要 |
A wireless communication apparatus has: a direct current generator, for generating a direct current signal and a transmitter. The transmitter includes: an oscillating signal generator for generating an oscillating signal; a mixer 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 for amplifying the mixed signal to generate an output signal. 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.
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