Patent ID: 8391820

Claim:
In a circuit, a method for converting a GPS (Global Positioning System) signal and a non-GPS RF (radio frequency) signal, said non-GPS RF signal being a non-GPS signal, to a corresponding one of a first intermediate frequency (IF) signal and a second intermediate frequency (IF) signal, comprising: providing a common mixer that is coupled to receive as inputs a GPS-derived signal that is derived from said GPS signal and a RF-derived signal that is derived from said non-GPS RF signal; providing a first local oscillator signal having a first frequency and a second oscillator signal having a second frequency to said common mixer; and producing said first IF signal using said common mixer from said GPS-derived signal and said first oscillator signal when said circuit operates in a GPS mode and a second IF signal using said common mixer from said RF-derived signal and said second local oscillator signal when said circuit operates in a non-GPS RF signal mode, wherein said first IF signal and said second IF signal are simultaneously produced, said method further including selecting, using a first filter, said first IF signal for use by GPS processing circuitry and said second IF signal for use by RF signal processing circuitry.