High-frequency filter
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United States of America Patent
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May 21, 2013
Grant Date -
Jun 28, 2012
app pub date -
Mar 7, 2012
filing date -
Sep 18, 2009
priority date (Note) -
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Abstract
One embodiment of a high-frequency filter includes a band-rejection filter including a plurality of reflection-type resonance elements and a filter circuit element provided between the reflection-type resonance elements, wherein an electrical length between the reflection-type resonance elements between which the filter circuit element is provided is an odd multiple of 90 degrees in a rejection band of the band-rejection filter.
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