Patent ID: 8258955

Claim:
A dual threshold circuit of a Radio Frequency Identification (RFID) tag, comprising: an envelope detector configured to receive a modulated wireless RF input signal and further configured to derive an analog output signal responsive to the modulated wireless RF input signal; a first slicer circuit configured to derive a first unfiltered digital output signal responsive to the analog output signal and to a first analog decision threshold; a second slicer circuit configured to derive a second unfiltered digital output signal responsive to the analog output signal and to a second analog decision threshold; a selection circuit configured to derive a filtered digital output signal by selecting one of the first and second unfiltered digital outputs; a multiplexer of the selection circuit configured to select one of the first and second unfiltered digital outputs; and a digital decision circuit for configuring the multiplexer to select one of the first and second unfiltered digital outputs based on a performance criterion.