Digitally programmable high-order filter
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United States of America Patent
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Jul 9, 2013
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N/A
app pub date -
Apr 2, 2012
filing date -
Apr 2, 2012
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Abstract
The digitally programmable high-order filter uses simple active elements, namely DCCAs and VBs, with the help of R-2R ladders to realize several nth-order filters, ‘n+3’ DCCAs and ‘n’ VBs may be used, and can provide programmability to either the filter's numerator coefficients or to the denominator coefficients. The digitally programmable high-order filter may include R-2R ladders in its negative feedback loops, resulting in a filter in which all coefficients are programmable.
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