Filter circuit utilizing charge transfer device
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United States of America Patent
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-
Dec 29, 1981
Grant Date -
N/A
app pub date -
Jan 18, 1980
filing date -
Jan 26, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A non-recursive transversal filter circuit employs a charge transfer device in which certain of the capacitive storage elements are divided into first and second capacitive portions having predetermined capacitance relationships. The charge in the second capacitive storage elements is sensed at predetermined times to produce an output signal. The relative capacitances of the second capacitance portions provide weighting factors to the filter. Embodiments include bucket brigade devices with bipolar and FET transistors as well as charge coupled devices.
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