Switched capacitor mixer/multiplier
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United States of America Patent
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Dec 6, 1988
Grant Date -
N/A
app pub date -
Apr 22, 1987
filing date -
Apr 22, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sequence of samples of a time varying signal is multiplied by respective, corresponding, multiplicands corresponding to values of a separate signal. The multiplicands are provided as ratios of capacitances switched into and out of a circuit between the input time varying voltage and an accumulating integrator. The arrangement is used to provide multiplication of a time varying signal by corresponding amplitudes of a sinusoid without requiring generation of a sinusoid. The arrangement is used for sampling, detecting signals utilizing a simulated local oscillator signal, and for generation of an arbitrary time varying function.
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