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2023-02-21
Performance Enhancement of Patch Antenna Using RIS and Metamaterial Superstrate for Wireless Applications
By
Progress In Electromagnetics Research C, Vol. 130, 95-105, 2023
Abstract
This paper proposes a single feed circularly polarised patch antenna with reactive impedance surface (RIS) and metamaterial superstrate (MS) to improve bandwidth and gain for Wi-Fi and Wi-Max applications that demand high gain, wide band, and directional antennas. In this paper, we demonstrate the performance of several antenna designs, including a slot-loaded patch on a single substrate, an antenna on a dual layer substrate with RIS, and an antenna with RIS and MS. The cavity formed by the superstrate and antenna ground plane functions as a Fabry-Perot resonator (FPR) that enhances bandwidth and gain simultaneously. The final optimised antenna has a significantly wider impedance bandwidth (IBW) of 17.32% (5.01 GHz - 5.96 GHz) and an axial ratio bandwidth (ARBW) of 6.29% (5.23 GHz-5.57 GHz) than the conventional slot loaded patch antenna. The proposed antenna gain is 11.73 dB, which is around 9 dB increase over the gain of a standard antenna.
Citation
Swapna Kumari Budarapu, Metuku Shyam Sunder, and Bollapragada Ramakrishna, "Performance Enhancement of Patch Antenna Using RIS and Metamaterial Superstrate for Wireless Applications," Progress In Electromagnetics Research C, Vol. 130, 95-105, 2023.
doi:10.2528/PIERC22112603
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