Single-layer dual-band frequency selective surface for coverage-enhancing applications in millimeter-wave 5G

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering Pub Date : 2025-06-13 DOI:10.1016/j.rineng.2025.105747

Mousa Abdollahvand , Eduardo Martinez-de-Rioja , Kanishka Katoch , Ana Arboleya , Celia Fontá

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Abstract

This work presents a dual-band Frequency Selective Surface (FSS) for improving 5G communications at millimeter-wave bands. The FSS is based on a single-layer configuration which supports dual polarization, with a unit-cell period of 4 mm x 4 mm. The structure exhibits two reflection bands at 28 GHz and 39 GHz. An equivalent circuit model has been developed for the proposed FSS, showing good agreement with full-wave electromagnetic simulations. A 200 mm x 200 mm prototype of the FSS, comprising an array of 50 × 50 unit-cells has been fabricated and tested, and the measured transmission and reflection coefficients agree well with the simulations. Moreover, the frequency response of the FSS shows good stability for incidence angles up to 40°. The proposed single-layer dual-band FSS has applications in the design of smart reflecting surfaces to enhance wireless communications in 5G networks operating at the 28 and 39 GHz bands, either alone or in combination with metasurface or reflectarray elements that could be placed on its upper side.

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单层双频选择表面，用于毫米波5G的覆盖增强应用

这项工作提出了一种双频频率选择表面（FSS），用于改善毫米波频段的5G通信。FSS基于单层结构，支持双极化，单胞周期为4mm × 4mm。该结构具有28ghz和39ghz两个反射带。建立了FSS的等效电路模型，与全波电磁仿真结果吻合良好。制作了一个由50 × 50单元阵列组成的200 mm × 200 mm的FSS样机并进行了测试，测量的透射和反射系数与模拟结果吻合良好。此外，FSS的频率响应在入射角为40°时表现出良好的稳定性。提出的单层双频FSS应用于智能反射面设计，以增强在28和39 GHz频段运行的5G网络中的无线通信，可以单独使用，也可以与可放置在其上部的超表面或反射元件结合使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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