Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator
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United States of America Patent
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Feb 25, 1997
Grant Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Mar 7, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A zero-intermediate frequency receiver circuit (11) for receiving a radio frequency signal detected by an antenna (14). The receiver circuit (10) comprises a second local oscillator circuit (25) and an oscillator circuit (60) of a phase locked loop demodulator (36) which are identical and track each other so as to provide a more accurate reference for processing a demodulated signal. A current reference (39) providing a current reference signal utilized by the second local oscillator circuit (25) and the oscillator circuit (60) of the phase locked loop demodulator (36).
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