Synchronous AM demodulator with quadrature signal cancellation
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United States of America Patent
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Apr 16, 1985
Grant Date -
N/A
app pub date -
Jun 15, 1983
filing date -
Jun 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for removing quadrature error signal components from synchronous AM demodulation signals are disclosed. A synchronous AM demodulator processes a synchronous sensor output signal in phase relation to a phase reference signal. Means are provided for dynamically producing a counteracting signal that is stably phase related to the system reference signal. The counteracting signal is in phase with the quadrature component of the synchronous signal such that when added to the synchronous signal, the quadrature component thereof is minimized or eliminated.
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