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- W4366999664 abstract "Despite the growing interest in reconfigurable intelligent surfaces (RISs) for millimeter-wave (mm-wave) bands, and the considerable theoretical work reported by the communication community, there is a limited number of published works demonstrating practical implementations and experimental results. To the authors' knowledge, no published literature has reported experimental results for RISs covering the n257 and n258 mm-wave bands. In this work, we propose a novel wideband RIS design that covers the entire mm-wave 5G n257 and n258 bands. In simulations, the unit cell can maintain a phase difference of 180{deg} +- 20{deg} and a reflection magnitude greater than -2.8 dB within 22.7 to 30.5 GHz (29.3% bandwidth) using one-bit PIN switches. The proposed unit cell design with four circular cutouts and long vias could realize wideband performance by exciting two adjacent high-order resonances (2.5f and 3.5f). The periodic unit cells can maintain an angular stability of 30{deg}. Based on the proposed unit cell, a 20 by 20 RIS array is designed and fabricated with a size of 7.1{lambda} by 7.1{lambda}. The measurement results demonstrate that the proposed RIS could maintain a 3 dB peak gain variation bandwidth among various array configurations within 22.5 to 29.5 GHz (26.9%) and with a beam scanning capability of 50{deg}, making this design a good candidate for 5G mm-wave applications." @default.
- W4366999664 created "2023-04-27" @default.
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- W4366999664 date "2023-04-23" @default.
- W4366999664 modified "2023-09-25" @default.
- W4366999664 title "A Wideband Reconfigurable Intelligent Surface for 5G Millimeter-Wave Applications" @default.
- W4366999664 doi "https://doi.org/10.48550/arxiv.2304.11572" @default.
- W4366999664 hasPublicationYear "2023" @default.
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