Dielectric combine cavity filter having ceramic resonator rods suspended by polymer wedge mounting structures
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United States of America Patent
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Aug 17, 2010
Grant Date -
Oct 15, 2009
app pub date -
Apr 14, 2008
filing date -
Apr 14, 2008
priority date (Note) -
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Abstract
A combline filter has a ceramic resonator disposed inside at least one cavity wall. Because the resonator is implemented as a hollow rod, a tuning element may be inserted into an opening on the top of the rod to tune its frequency. A mounting element, inserted into an opening on the bottom of the rod secures its position inside a cavity resonator. Instead of soldering the resonator to the filter's walls, the resonator is supported above a bottom or side wall of the cavity resonator.
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