Patent ID: 7606328

Claim:
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: a first analog to digital converter for receiving said analog in-phase IF signals and said LGSRS and providing said digital in-phase IF signal; and, a second analog to digital converter for receiving said analog quadrature IF signals and said LGSRS and providing said digital quadrature IF signal, wherein the combination of the down converter section and the digitizer section perform frequency translation in conjunction with each other.