Patent ID: 7206560
Filing Date: 2007-04-17
Classification: H04B

Abstract:
1. A radio frequency (RF) receiver comprising: a local oscillator (LO) for generating a local oscillation signal; first and a second mixers coupled to said LO, for converting a received RF signal to an in-phase intermediate frequency (IF) signal and a quadrature IF signal, respectively; an LO frequency control module, coupled to said LO, for alternately down-converting a channel frequency on a frame-by-frame basis by changing an oscillation frequency of said LO via  wherein f a down converter, coupled to said first and second mixers, for down converting said in-phase IF signal and said quadrature IF signal to a baseband; and a complex sinusoid signal IFLO, coupled to said down converter, for providing a complex sinusoid signal to said down converter; and a down conversion controller, coupled to said complex sinusoid signal IFLO, for adjusting a complex sine wave within said down converter via said complex sinusoid signal IFLO.