Patent ID: 7020221

Claim:
An intermediate frequency sampling architecture, comprising: a modulator, the modulator receiving an input signal and modulating the input signal to an intermediate frequency; a first filter, the first filter receiving the intermediate frequency signal and passing the intermediate frequency signal through a filter having a bandpass characteristic, producing a filtered signal; an I/Q sampler, the I/Q sampler receiving the filtered signal, and providing the filtered signal with increased selectivity, the I/Q sampler comprising a sampling device, a delay element, and an adder, the sampling device sampling the output of the first filter, the delay element delaying one of the in-phase and quadrature phase components of the sampled signal, thereby producing a delayed component and an un-delayed component, the adder receiving the delayed component and the un-delayed component and summing the delayed component and the un-delayed component to produce an input to a quantizer; and the quantizer receiving and digitizing the increased selectivity filtered signal to produce a digitized signal ready for baseband conversion.