Passive part
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United States of America Patent
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Jan 24, 2012
Grant Date -
Feb 11, 2010
app pub date -
Mar 13, 2008
filing date -
Mar 16, 2007
priority date (Note) -
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Abstract
A first passive part forms a second parallel resonance circuit having a resonance frequency near the passing band among a first to a third parallel resonance circuit as follows. That is, the second parallel resonance circuit is formed at a position farthest from a first shield electrode and farthest from a second shield electrode in a region sandwiched by the first shield electrode and the second shield electrode in a dielectric substrate (in this example, on the main surface of a seventh dielectric layer and the main surface of an eighth dielectric layer located at a center portion in the layering direction of the region).
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