Active low pass filter
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United States of America Patent
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Nov 4, 2014
Issued Date -
N/A
app pub date -
Nov 15, 2007
filing date -
Nov 27, 2006
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Abstract
The invention relates to a selective active low-pass filter and to a method for improving the selectivity of such a filter. The method includes centering, in the center of a network, the resonant element whose frequency is closest to the cutoff frequency of the filter and in inserting in series with this element a negative resistance of higher value than the parasitic resistance of the filter.
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