Patent ID: 8514991

Claim:
A receiver for receiving a communication channel modulated on one or more carrier frequencies, said receiver comprising: a gain adjustable radio frequency amplifier coupled to an antenna and adapted to amplify signals within a band of frequencies which includes the one or more carrier frequencies; a wideband signal power measurement circuit adapted to characterize signal strength of signals having frequencies in spectral proximity to the one or more carrier frequencies; a frequency adjustable synthesizer adapted to generate a mixing signal for down-converting a received signal including the communication channel; a baseband signal power measurement circuit adapted to measure power of a filtered baseband version of the received signal and to perform baseband signal measurements of channels in spectral proximity to the one or more carrier frequencies; and spectrum scanning control logic adapted to adjust the frequency of said synthesizer and adapted to adjust the gain of said radio frequency amplifier both adjustments being based on: (1) an output from said wideband signal power measurement circuit relating to frequencies in spectral proximity to the one or more carrier frequencies; (2) an output from said baseband signal power measurement circuit relating to a filtered baseband version of the received signal, and (3) an output from said baseband signal power measurement circuit relating the baseband signal measurements of channels in spectral proximity to the one or more carrier frequencies.