Patent ID: 8112050

Claim:
A method of recovering a signal of interest from an input signal, said method comprising: receiving a first portion of said input signal in a first frequency band, said signal of interest being contained in a second frequency band contained in said first frequency band; down converting said first portion of said input signal to a third frequency band to generate a down converted signal using an in-phase channel processing path and a quadrature phase channel processing path, wherein said third frequency band is lower than said first frequency band; recovering said signal of interest in said first portion based on said down converted signal; determining whether a condition has occurred by examining said first portion; switching off one or more components of a first path if said condition is absent, wherein said first path comprises one of said in-phase channel processing path and said quadrature phase channel processing path; and performing said down converting and said recovering for a subsequent portion of said input signal with said first path switched off.