A high gain wideband circularly polarized antenna with asymmetric metasurface. Issue 7 (22nd March 2019)

• Record Type: Journal Article
• Authors: Sheersha, Jils A.; Nasimuddin, N.; Alphones, Arokiaswami
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 29:Issue 7(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-03-22
• Subjects: asymmetric‐metasurface -- wideband antenna -- circular polarization -- rectangular patch; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21740
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: An asymmetric‐metasurface based wideband circularly polarized (CP) microstrip antenna using a coaxial probe is proposed for L‐band applications. The antenna involves a stacked asymmetric‐metasurface, a radiating rectangular‐patch and a coaxial feed. An asymmetric‐metasurface is designed using rectangular unit cells and smaller size unit cells along one of the diagonal lines. The asymmetric‐metasurface is placed above a radiating rectangular‐patch with support of foam layer to achieve a wideband CP radiation. The measured performance of the prototype antenna achieves an impedance bandwidth (−10 dB return loss bandwidth) of 15.7% (1.58‐1.85 GHz) with CP bandwidth (3‐dB axial ratio) of 13% (1.58‐1.80 GHz) and gain of ≥9 dBic.