Millimeter Wave Filter for Wireless Communications Systems
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United States of America Patent
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app pub date -
Jun 25, 2012
filing date -
Jan 29, 2010
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Abandoned
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Abstract
A millimeter wave transmission line filter having a plurality of filter pole determining coupled cavities fabricated with a multiple lithographic layer micro-machining process. The filter cavities are oriented perpendicular to an underlying substrate element in order to achieve micromachining, fabrication and accuracy advantages. Multiple filters can be used in a frequency multiplex arrangement as in a duplexer. Radio frequencies in the 15 to 300 gigahertz range are contemplated.
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