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Journal of Computational Electronics
Erschienen in: Journal of Computational Electronics 3/2018

23.05.2018

Gain enhancement and broadband RCS reduction of a circularly polarized aperture-coupled annular-slot antenna using metasurface

verfasst von: Ankit Sharma, Deepak Gangwar, Binod Kumar Kanaujia, Santanu Dwari

Erschienen in: Journal of Computational Electronics | Ausgabe 3/2018

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Abstract

A circularly polarized microstrip slot antenna with low radar cross-section (RCS) and high gain was designed using a metasurface composed of a \(6 \times 6\) array of corner-truncated square patches placed on top of the upper substrate. By optimizing the geometry of the metasurface patches and L-shaped feed of the proposed antenna, broadband RCS reduction and improved overall antenna performance were achieved. A prototype antenna was fabricated, and the results showed that the proposed antenna exhibited an impedance bandwidth of 29.08 % in the frequency band of 4.29–5.75 GHz. The designed antenna achieved good 3-dB axial ratio (AR) bandwidth of about 30.18 % with center frequency of 5.3 GHz, and gain in the broadside direction of 9.9 dBi. Using the designed metasurface, remarkable monostatic RCS reduction was obtained in the frequency range from 4 to 13 GHz.
Vorheriger Artikel A new approach to analyze a resistive patch antenna excited by a microstrip line and printed on an anisotropic substrate with superstrate
Nächster Artikel Small-size scarecrow-shaped CPW and microstrip-line-fed UWB antennas

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Metadaten
Titel
Gain enhancement and broadband RCS reduction of a circularly polarized aperture-coupled annular-slot antenna using metasurface
verfasst von
Ankit Sharma
Deepak Gangwar
Binod Kumar Kanaujia
Santanu Dwari
Publikationsdatum
23.05.2018
Verlag
Springer US
Erschienen in
Journal of Computational Electronics / Ausgabe 3/2018
Print ISSN: 1569-8025
Elektronische ISSN: 1572-8137
DOI
https://doi.org/10.1007/s10825-018-1181-1

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