Dual polarized aperture coupled microstrip patch antenna system
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United States of America Patent
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Apr 20, 1999
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N/A
app pub date -
May 27, 1997
filing date -
May 27, 1997
priority date (Note) -
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Abstract
A dual polarized aperture coupled patch antenna system having a back plate, a ground plane and a patch plane. The patch plane has a conductive patch layer forming a plurality of conductive patches on one side. The ground plane has a slot layer on one side and a microstrip feed network layer on the opposite side. The ground plate is positioned between the patch plane and the back plate, with the slot layer confronting the conductive patch layer of the patch plane and the microstrip feed network layer confronting the back plate. The slot layer comprises a conducting coating having a plurality of intersecting polarization slot pairs etched into the coating. The microstrip feed network layer comprises two feed lines and a plurality of feed probes. Two feed probe members are coupled to each conductive patch through one arm of each slot pair and one feed probe member is coupled to each conductive patch through each other slot pair. This arrangement provides dual polarization with effective cross polarization port-to-port isolation using only one microstrip feed network layer and without the use of jumpers of crossovers.
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