Patent ID: 7403576

Claim:
A radio receiver, comprising: a band pass filter configured to filter a combined signal; a clocked comparator coupled with the band pass filter, the clocked comparator configured to compare the filter combined signal to a ground reference when the comparator is enabled by a clock signal; a digital-to-analog converter coupled with the clocked comparator, the digital-to-analog converter configured to convert the output of the clocked comparator to an analog signal; and a combiner configured to receive a RF signal and combine the RF signal with the analog signal generated by the digital-to-analog converter in order to generate the combined signal; and a plurality of clocked comparators coupled to the band pass filter, each of the clocked comparators configured to be activated on a different phase of a clock signal and a combiner coupled to the plurality of clocked comparators, the combiner configured to combine the outputs of the clocked comparators.