Multi-polarization planar antenna
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United States of America Patent
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Feb 3, 2009
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N/A
app pub date -
Sep 27, 2007
filing date -
Sep 27, 2007
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Abstract
A dual polarization planar antenna comprising a first layer comprising a first patch, a second layer beneath the first layer comprising a first feed line for coupling a first signal to the first patch and a second feed line for coupling a second signal to the first patch such that the first patch radiates a field that has two different polarizations, and a third layer comprising first and second coupling discs electrically connected to the first feed line and third and fourth coupling discs electrically connected to the second feed line, wherein the first and second discs are electrically coupled to each other by a first half wavelength conductor and the third and fourth discs are electrically coupled the each other by a second half wavelength conductor, the first and second half wavelength conductors not being disposed in the second layer.
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