Local oscillator phase noise cancelling modulation technique
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United States of America Patent
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Aug 29, 1995
Grant Date -
N/A
app pub date -
Feb 2, 1994
filing date -
Feb 2, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data transmission system includes a source of a data signal and a modulator, responsive to the data signal, producing a first modulated signal representing the data signal and a second modulated signal representing a signal 180 out-of-phase with the data signal. The first and second modulated signals are transported via a transmission channel. A first demodulator demodulates the transported first modulated signal and a second demodulator demodulates the transported second modulated signal. A subtractor, responsive to the first and second demodulators, produces a signal representative of the data signal.
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