MULTIPLE FEED ANTENNA OPERATING AT SIGNIFICANTLY DIFFERING FREQUENCIES
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United States of America Patent
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app pub date -
Sep 13, 2012
filing date -
Sep 23, 2011
priority date (Note) -
Abandoned
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Abstract
A multiple feed antenna includes a first waveguide having a first upper aperture with a first wall surrounding the first upper aperture; a second waveguide disposed in parallel to the first waveguide, in which the second waveguide has a second upper aperture; a second wall surrounding the first wall, with a first groove between the second wall and the first wall; a third wall surrounding the second wall and the second upper aperture, with a second groove between the third wall and the second wall; a fourth wall surrounding the third wall, with a third groove between the fourth wall and the third wall; and a plurality of ribs connecting the first wall and the second wall.
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