Method and apparatus for improved zero intermediate frequency receiver latency
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United States of America Patent
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Jan 20, 1998
Grant Date -
N/A
app pub date -
Dec 19, 1995
filing date -
Dec 19, 1995
priority date (Note) -
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Abstract
A transceiver (10) in a first embodiment includes a zero intermediate frequency (ZIF) receiver (11), which achieves high throughput operation by reducing receiver latency time due to receiver response within a receiver pass band to carrier spectral components of a modulated carrier frequency. During a receive mode, a receiver local oscillator (LO) frequency is offset from the carrier frequency within the receiver pass band, preferably as determined by worst case errors in the carrier frequency and the LO frequency. During a transmit mode, the receiver LO frequency is modulated in such a way as to suppress the LO center frequency component in the modulated spectrum.
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