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Compact waveguide circular polarizer

United States Patent

August 16, 2016
View the Complete Patent at the US Patent & Trademark Office
SLAC National Accelerator Laboratory - Visit the Technology Transfer Website
A multi-port waveguide is provided having a rectangular waveguide that includes a Y-shape structure with first top arm having a first rectangular waveguide port, a second top arm with second rectangular waveguide port, and a base arm with a third rectangular waveguide port for supporting a TE.sub.10 mode and a TE.sub.20 mode, where the end of the third rectangular waveguide port includes rounded edges that are parallel to a z-axis of the waveguide, a circular waveguide having a circular waveguide port for supporting a left hand and a right hand circular polarization TE.sub.11 mode and is coupled to a base arm broad wall, and a matching feature disposed on the base arm broad wall opposite of the circular waveguide for terminating the third rectangular waveguide port, where the first rectangular waveguide port, the second rectangular waveguide port and the circular waveguide port are capable of supporting 4-modes of operation.
Tantawi; Sami G. (Stanford, CA)
The Borad of Trustees of the Leland Stanford Junior University (Palo Alto, CA)
14/ 641,938
March 9, 2015
STATEMENT OF GOVERNMENT SPONSORED SUPPORT This invention was made with Government support under contract no. DE-AC02-76SF00515 awarded by the Department of Energy. The Government has certain rights in the invention.