Band rejection filter with attenuation poles
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United States of America Patent
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Aug 14, 2007
Grant Date -
Sep 16, 2004
app pub date -
Feb 26, 2004
filing date -
Dec 27, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A band rejection filter with attenuation poles includes a plurality of series resonant circuits having end terminals connected in common and other end terminals connected in series via a plurality of transmission lines each having a length that is an odd multiple of about the one-quarter wavelength at the resonance frequency of the plurality of series resonant circuits, and a jump-coupling circuit for roughly coupling two of the plurality of series resonant circuits, which are not adjacent to each other, to each other.
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