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Powell Optimization of Circular Ring Frequency Selective Surfaces

✍ Scribed by Zhang, J. C. ;Yin, Y. Z. ;Ma, J. P.

Book ID
125846043
Publisher
Taylor and Francis Group
Year
2010
Tongue
English
Weight
173 KB
Volume
24
Category
Article
ISSN
0920-5071

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## Abstract In this letter, a ring‐shaped frequency selective surface (FSS) superstrate is designed to enhance the directivity of a circularly polarized patch antenna by reducing the sidelobe levels. Based on the unit cell simulation, several important parameters that characterize the ring‐shaped F