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US 2012/0256708 A1Published application
Millimeter Wave Filter for Wireless Communications Systems
AssigneeGovernment of the United States as Represented by the Secretary of the Air Force
InventorJ. Robert Reid, JR.
Life of this patent
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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.
Claims2
A millimeter wave transmission line filter comprising:
- a plurality of adjacently located, open-ended, radially intersecting, millimeter wave sized cavities disposed in a body of electrically conductive material;
- and
- a thinly disposed unitary array of cavity-tuning-capacitive closure elements compatible with the open-ended intersecting cavities at the open end thereof, wherein the body of cavities and the unitary array of cavity-tuning capacitive closure elements include mutually engageable marriage elements.
Dependencies are inferred from the claim text.