Patent ID: 7606328
Filing Date: 2009-10-20
Classification: G01S,H04B

Abstract:
1. A common signal generating sub-system (CSGS) for a radio frequency (RF) receiver, said CSGS comprising: a down converter section for receiving intermediate frequency (IF) signals and injection frequency signals from an RF/IF processing section of an RF receiver and for translating said IF signals to analog intermediate frequency (IF) signals preserving the spectra thereof, said analog IF signals comprising analog in-phase IF signals and analog quadrature IF signals; and, a digitizer section for utilizing a locally generated sampling rate signal (LGSRS) and converting said analog in-phase IF signals and said analog quadrature IF signals to a common digital in-phase IF signal and a common digital quadrature IF signal, wherein said common digital IF signals can be subsequently processed by a digital processing section of the RF receiver, said LGSRS providing additional frequency translation by aliasing said analog in-phase IF signals and analog quadrature IF signals using an A/D sampler rate, wherein said digitizer section, comprises: wherein the combination of the down converter section and the digitizer section perform frequency translation in conjunction with each other.