Performance enhancement of Salisbury screen absorber using resistively loaded spiral FSS
In this article, we show that the �10 dB reflectivity bandwidth of a Salisbury screen operating at normal incidence is increased by 56% when a lossy spiral shaped frequency selective surface is inserted between the outermost 377 X per square resistive sheet and the ground plane. Moreover, this struc...
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| Main Authors: | , |
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| Format: | Article |
| Published: |
Wiley
2011
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| Subjects: | |
| Online Access: | http://onlinelibrary.wiley.com/doi/10.1002/mop.26040/pdf http://onlinelibrary.wiley.com/doi/10.1002/mop.26040/pdf |
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| Summary: | In this article, we show that the �10 dB reflectivity
bandwidth of a Salisbury screen operating at normal incidence is
increased by 56% when a lossy spiral shaped frequency selective
surface is inserted between the outermost 377 X per square resistive
sheet and the ground plane. Moreover, this structure exhibits
significantly better angular stability and is suitable for suppressing
radar backscatter simultaneously in the TE and TM plane. Reflectivity
predictions for normal and 40� incidence are shown to be in close
agreement with bistatic measured results over the frequency range 5.4–
18 GHz. |
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