Intelligent Metasurface Layer for Direct Antenna Amplitude Modulation Scheme

Jwair, Marwah Haleem; Elwi, Taha A.; Alibakhshikenari, Mohammad; Virdee, Bal. S.; Almizan, Hayder; Abdul Hassain, Zaid A.; Ali, Syed Mansoor; Kouhalvandi, Lida; Livreri, Patrizia; Tokan, Nurhan Türker; Pau, Giovanni; See, Chan Hwang; Limiti, Ernesto

Abstract

This paper proposes a transmitter system based on direct antenna amplitude-shift keying modulation for point-to-point microwave link. The proposed system is formed from a conventional microstrip antenna and a novel reconfigurable metasurface layer (RMSL). The proposed RMSL has two states: OFF (or Logic-0) and ON (or Logic-1) where each switching scenario provides a certain gain level. This is achieved through controlling the proposed RMSL switching configuration to control the amplitude of the transmitted signal. Results show that such a system can modulate electromagnetic signals directly by varying the antenna’s gain from about 2 dBi for Logic-0 to 13.8 dBi for Logic-1. An analytical model-based ray-tracing technique is invoked to explain the operation of the proposed antenna system. To demonstrate the operation of the proposed system, both the antenna and the RMSL structures were fabricated, assembled and tested. Measurements show good agreement with the theoretical model and numerical simulations obtained using CST Microwave Studio software package. The overall system has dimensions of 25×25×7.3 cm3

• Journal Article Type: Article
• Acceptance Date: Jul 16, 2023
• Online Publication Date: Jul 20, 2023
• Publication Date: Jul 31, 2023
• Deposit Date: Jul 18, 2023
• Publicly Available Date: Jul 20, 2023
• Electronic ISSN: 2169-3536
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Pages: 77506 - 77517
• DOI: https://doi.org/10.1109/access.2023.3297264
• Keywords: ASK modulation, direct antenna modulation, microstrip antenna, reconfigurable metasurface