Patent ID: 7190939

Claim:
A direct conversion receiver, comprising: a local oscillator for generating a sinusoid; a mixer for receiving an incoming signal and for mixing the incoming signal with the sinusoid; an analog-to-digital converter for converting the mixed analog signal into a digital signal; and a digital signal processor, the digital signal processor transmitting a phase control signal to the local oscillator and the digital signal processor separately and sequentially outputting an I-channel signal and a Q-channel signal based on the phase control signal, and the digital signal processor setting the phase control signal to a first phase difference, relative to the incoming signal, causing the local oscillator to generate a sinusoid with the first phase difference during a first time period during which the I-channel signal is output and setting the phase control signal to a second phase difference, relative to the incoming signal, causing the local oscillator to generate a sinusoid with the second phase difference during a second time period during which the Q-channel signal is output, wherein the first phase difference is different from the second phase difference and the first time period one of sequentially precedes or follows the second time period.