Filter circuit
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United States of America Patent
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Jan 13, 1998
Grant Date -
N/A
app pub date -
Apr 15, 1996
filing date -
Jan 30, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter circuit comprises a 1-bit quantizer, a first moving average type of filter having an N-dimensional 1-bit delay element operating in synchronism to a clock of a first sampling frequency, a thinning circuit for thinning an output from the first moving average type of filter in synchronism to a clock of a second sampling frequency, and a second moving average type of filter having an M-order q-bit delay element operating in synchronism to a clock of a second sampling frequency, wherein the thinning circuit removes anti-alias elements in the second moving average type of filter.
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