FILTER CAPABLE OF ADJUSTING FREQUENCY RESPONSE
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United States of America Patent
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Issued Date -
Jan 31, 2013
app pub date -
Sep 21, 2011
filing date -
Jul 28, 2011
priority date (Note) -
Abandoned
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Abstract
A filter includes a first varactor with a first end electrically connected to a signal input end, a second varactor with a first end electrically connected to a second end of the first varactor, and a second end electrically connected to ground, and an inductor with a first end electrically connected to the second end of the first varactor, and a second end electrically connected to ground. The filter is capable of adjusting its frequency response by changing capacitance of the first varactor and/or the second varactor.
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