Resonating structure providing notch and bandpass filtering
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Jul 2, 1997
filing date -
Jul 2, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A combination notch/bandpass filter uses first and second adjacently-located cavities in the conductive housing to respectively provide a tunable, first-stage notch filter and a second-stage bandpass filter. An opening in a wall provides a passage for energy from the first cavity to the second cavity. In the first cavity, a resonator is located adjacent the opening, along with a notch-filter tuning member having one end arranged opposite the resonator and spaced therefrom by a distance to permit the wide end of a coupler to be suspended therebetween. An elongated portion of the coupler carries filtered energy from the first cavity to the second cavity.
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