Polarization selective surface for circular polarization
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United States of America Patent
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Oct 1, 1991
Grant Date -
N/A
app pub date -
Apr 25, 1989
filing date -
Sep 9, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A surface for an antenna for use in discriminating between horizontal and vertical polarization components of a circularly polorized electromagnetic wave comprises at least one pair of dipoles, one of the dipoles of each pair of dipoles being adapted to receive one component of circular polarization and the other dipole of each pair of dipoles being adapted to receive the other component of circular polarization, and a transmission line extending between and electrically connecting the feed points of the dipoles of each pair of dipoles, whereby an incident circularly polarized electromagnetic wave is reflected when its two polarization components are incident upon their respective dipoles in phase and is transmitted when the its two components are incident upon their respective dipoles 180 electrical degrees out-of-phase.
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