Matched filter bank
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United States of America Patent
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Jan 28, 2003
Grant Date -
N/A
app pub date -
Feb 11, 1999
filing date -
Feb 12, 1998
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Abstract
A matched filter bank including a plurality of matched filters and a sampling and holding units commonly used by the total matched filters. Therefore, the circuit size is diminished. An inverting amplifier for the matched filter with a variable gain includes an input capacitance, an inverting amplifier connected to an output of the input capacitance, and a plurality of feedback capacitances connected between an input and output of the inverting amplifier. A plurality of switches are connected to input side of the feedback capacitances for alternatively connecting the feedback capcitanec to the input of the inverting amplifier or a reference voltage. The feedback capacitances connected to the reference voltage are invalid with respect to a composite capacitance of the feedback capacitance and have no influence to the amplifier.
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