Patent ID: 8509354

Claim:
Receive path circuitry for a bandpass sampling receiver having decoupled quantization, comprising: bandpass filter circuitry configured to select a Nyquist zone band, the bandpass filter circuitry having a center frequency within a frequency range of interest having a total frequency range; non-quantizing sampling circuitry configured to receive a filtered signal from the bandpass filter circuitry and to receive a frequency modulated RF sampling clock as an input, the frequency modulated RF sampling clock meeting Nyquist sampling criteria of the bandpass filter but not meeting Nyquist sampling criteria for the total frequency range of the frequency range of interest, the frequency modulated RF sampling clock resulting in a known Nyquist zone-induced modulation from the sampling clock on signals of interest received from a given Nyquist zone band selected by the bandpass filter circuitry during the bandpass sampling process and a different Nyquist zone-induced modulation from the sampling clock on any signal leaking past the bandpass filter circuitry from a Nyquist zone band different from the given selected Nyquist zone band; an analog interpolation filter coupled to receive the output of the non-quantizing sampling circuitry, the analog interpolation filter having a center frequency within a folded Nyquist zone of operation for the non-quantizing sampling circuitry; analog to digital converter (ADC) circuitry configured to receive a quantization sampling clock signal and to quantize an analog signal received from the analog interpolation filter to produce a digital output signal; and demodulation circuitry configured to receive a digital signal that is based at least in part on the digital output signal of the ADC circuitry, and to demodulate the received digital signal based upon the known Nyquist zone-induced modulation from the sampling clock for the given selected Nyquist zone band.