ALL DIGITAL IF-TO-BASEBAND SIGNAL CONVERTER

摘要

An intermediate frequency (IF) to baseband frequency signal converter for decoding an analog IF signal using phase information contained in the IF signal includes a first signal generator for generating an analog square wave signal from the IF signal. The signal converter also includes a second signal generator for generating a local phase reference signal, and a phase difference determinator for determining at a particular sampling interval a phase difference between a phase of the analog square wave signal and a phase of the local phase reference signal, wherein the phase difference represents a symbol which the signal converter has decoded from the IF signal.