Microwave mode shifting antenna system for regenerating particulate filters
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United States of America Patent
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Apr 26, 2011
Grant Date -
Mar 19, 2009
app pub date -
Jan 11, 2008
filing date -
Sep 17, 2007
priority date (Note) -
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Abstract
A regeneration system comprises a particulate matter (PM) filter including a microwave energy absorbing surface, and an antenna system comprising N antennas and an antenna driver module that sequentially drives the antenna system in a plurality of transverse modes of the antenna system to heat selected portions of the microwave absorbing surface to regenerate the PM filter, where N is an integer greater than one. The transverse modes may include transverse electric (TE) and/or transverse magnetic (TM) modes.
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