Radio cross-section reduction of conformal antennas mounted on vehicles
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United States of America
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May 3, 2022
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N/A
app pub date -
Jun 30, 2021
filing date -
Jun 30, 2021
priority date (Note) -
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Abstract
The radar cross section (RCS) of a vehicle/antenna combination is reduced by using an antenna and ground plane which are of substantially the same area, and using a frequency selective surface (FSS) in the regions on the periphery of the ground plain where the FSS is designed to be transparent and thereby pass out-of-band frequencies, while reflecting one or more operating frequencies of the antenna. A multilayer absorber below the FSS absorbs the out-of-band frequencies that a larger ground plane may have otherwise reflected to the body of the vehicle to which the antenna is mounted.
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