A METHOD AND APPARATUS FOR RECEIVING DIFFERENTIAL ULTRA WIDEBAND SIGNALS

摘要

A differential ultra wideband receiver (201) is disclosed comprising an antenna (109) coupled to a filter (203), which can reject out of band signals that may interfere with the desired ultra wideband signal. A low noise amplifier (LNA) (205) and an automatic gain control circuit (AGC) (207) may be coupled to the filter (203). A differential correlator (211) is coupled to the output of a low pass filter or integrator (217). The differential correlator includes a wideband delay element (213) and a mixer element (215). The delay element serves to delay an incoming RF waveform from an ultra wideband signal in an amount approximately equal to the symbol period. This delayed waveform is then mixed by mixer (215) with a current received waveform to provide a mixed signal, copled to the integrator. The output of the integrator is analog-to-digital converted and coupled to a digital demodulator.