Reconfigurable Intelligent Surface for Highly Efficient Electromagnetic Functionality

Neema, K and Manoharan, A and Vinoy, KJ and Das Krishna, D (2022) Reconfigurable Intelligent Surface for Highly Efficient Electromagnetic Functionality. In: 2022 IEEE Wireless Antenna and Microwave Symposium, WAMS 2022, 5 June-8 June 2022, Rourkela.

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Abstract

Controlling the environment in a wireless communication system is difficult. But Re-configurable Intelligent Surfaces (RIS) paves a path for it by applying the concept of meta-surfaces. In this paper, we propose a means by which radio-frequency waves could be controlled electronically using a re-configurable meta-surface, which consist of 3 layers of metal over substrate. Each surface is an array of 8 cells and it is designed to operate in the 3-4 GHz. The ON and OFF state can be ideally achieved using any RF switches like PIN diodes. In this paper, the concept is proved using metal strips between the cells for ON and removing it for OFF state. In ON state, the meta-surface is designed to reflect the EM wave completely, just like a perfect metal. In OFF state, the waves in the designed frequency band passes through the structure. The simulation and measured results shows a 200 MHz transmission bandwidth. We have fabricated the designed meta-surface and verified the transmission and reflection properties in a S -band wave guide. © 2022 IEEE.

Item Type:	Conference Paper
Publication:	2022 IEEE Wireless Antenna and Microwave Symposium, WAMS 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Semiconductor diodes; Strip metal, Band pass; Electromagnetics; Measured results; Meta-materials; Meta-surface; Radiofrequency waves; Re-configurable intelligent surface; Reconfigurable; RF switch; Wireless communication system, Electromagnetic waves
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	06 Oct 2022 08:16
Last Modified:	06 Oct 2022 08:16
URI:	https://eprints.iisc.ac.in/id/eprint/77145

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