A dual-band, polarization-insensitive, wide-angle metasurface array for electromagnetic energy harvesting and wireless power transfer

Wei, Yiqing; Jing, Huihui; Deng, Hao; Song, Chengwei; Duan, Junping; Wang, Jiayun; Qu, Zeng; Zhang, Binzhen

doi:10.1016/j.rinp.2023.106261

Cited by 5 publications

(1 citation statement)

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“…Since the rectifier network is complex and large-size, it will inevitably cause energy loss, and the rectification efficiency need to be improved. To this end, directly placing diodes around or within the metasurface units behaving as a power combining and rectifying network provide a new direction for integrated RMSs [16][17][18][19][20]. However, there are still some issues that need to be addressed: large and complex size, polarization sensitivity, low rectification efficiency, and so on.…”

Section: Introductionmentioning

confidence: 99%

Triple-band and polarization-insensitive rectifying metasurface with flexible substrate

Gui,

Xie,

Deng

et al. 2024

J. Phys. D: Appl. Phys.

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A flexible triple-band and polarization-insensitive rectifying metasurface (RMS) is presented in this article. The surface consists of three parts: a periodic metal unit with integrated diodes, a DC filter composed of series inductor and parallel capacitor, and a load resistor. Due to the direct integration of rectifying diodes and interconnected branches within and between the units, complex matching networks can be eliminated and the overall structure is simplified. A 6×6 array is fabricated and measured. The results show that at a low input power of 0 dBm, the RMS has efficiency of 51.81%, 44.25%, and 42.01% at 2.9 GHz, 5.2 GHz, and 5.77 GHz, respectively. The efficiency remains consistent under different polarization angles, demonstrating the polarization insensitivity property of RMS. Additionally, the flexible substrate enables high efficiency in the S-band and Wi-Fi bands even under a certain range of bending, revealing its superior flexibility and adaptability. Therefore, it is well suited for ambient energy harvesting and wireless self-powered miniaturized IoT devices.

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