Patent ID: 8284822

Claim:
A method for processing wireless signals, the method comprising: performing a calibration of a multi-band wireless receiver chip upon power up of said multi-band wireless receiver chip, wherein said calibration comprises generating, via a direct digital frequency synthesizer in said multi-band wireless receiver chip, one or more calibration signals, each calibration signal having a frequency corresponding to the frequency of a channel over which said multi-band wireless receiver chip is to receive signals, said calibration further comprising applying said one or more calibration signals directly to an input of at least one baseband filter to calibrate said at least one baseband filter; and subsequent to said calibration, generating, within a multi-band wireless receiver chip, a plurality of reference signals that are utilized for downconverting, within said multi-band wireless receiver chip, received VHF signals, received UHF signals and received L-band signals to corresponding baseband signals, wherein said plurality of reference signals are generated via said direct digital frequency synthesizer that comprises an accumulator having an output that is coupled to one or more digital-to-analog converters.