Dual-band, scalable, polarization insensitive metasurface for radio frequency energy harvesting

Congcong Xia, Hongmei Zhao and Mingxing Ren

Journal of Electromagnetic Waves and Applications, 2025, vol. 39, issue 12, 1396-1416

Abstract: In this paper, we propose a dual-band, polarization-insensitive, wide-angle metasurface array for radio frequency energy harvesting (RFEH) in the GSM-1800 band and Wi-Fi band. The metasurface array comprises periodically arranged cell structures and rectifiers. The metasurface unit cell structure comprises two rhombic rings, each with four splits, nested in a centrosymmetric configuration, and is referred to as nested open diamond rings. The unit cells are interconnected via a channel, with the rectifier integrated at the channel's terminus. The proposed array has polarization insensitive properties and wide angle characteristics. A 7 × 7 array was fabricated to verify the proposed design. The test results show that the efficiency of the rectifying metasurface is 64% at 1.8 GHz when the input power is −6 dBm and 49% at 5.8 GHz when the incident power is 3 dBm.

Date: 2025
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DOI: 10.1080/09205071.2025.2505746

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