METHOD AND SYSTEM FOR REDUCING SIGNAL PHASE CONTAMINATION

摘要

A method (1300) includes demodulating phase contamination in an input signal to generate a baseband signal ( 1306). The method also includes modulating the input signal based on the baseband signal to generate an output signal which has less phase contamination than the input signal (1308). The phase contamination may be demodulated using a phase demodulator or a frequency modulation (FM) detector. A portion of the input signal may be down-converted to a lower frequency, and the phase contamination in the down-converted portion of the input signal may be demodulated. Additional phase contamination in the output signal may be demodulated and used to regulate a level of the baseband signal used during modulation of the input signal (1312). The output signal may have less phase noise or period jitter than the input signal.