Systems and methods for blocking microwave propagation in parallel plate structures
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United States of America Patent
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Nov 11, 2008
Grant Date -
Jun 28, 2007
app pub date -
Dec 14, 2006
filing date -
Mar 8, 2004
priority date (Note) -
Expired
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Abstract
Systems and methods are taught for blocking the propagation of electromagnetic waves in parallel-plate waveguide (PPW) structures. Periodic arrays of resonant vias are used to create broadband high frequency stop bands in the PPW, while permitting DC and low frequency waves to propagate. Some embodiments of resonant via arrays are mechanically balanced, which promotes improved manufacturability. Important applications include electromagnetic noise reduction in layered electronic devices such as circuit boards, ceramic modules, and semiconductor chips.
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