A Dual-Band Wideband U-Slot Resonant Metasurface Antenna Array for Millimeter-Wave Applications Using Characteristic Mode Analysis

IF 5.8 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-04-30 DOI:10.1109/TAP.2025.3564005

Zelong Wang;Fangfang Fan;Rongsheng Li;Yunke Mo;Jiahao Li;Xiaofei Zhao

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Abstract

This communication presents a dual-band millimeter-wave (mmW) antenna array with a U-slot resonant metasurface antenna (U-RMA) design. Using characteristic mode analysis (CMA), we analyzed a U-RMA, incorporating the feeding slot and feed line to identify dominant resonant modes, mode interactions, and the impact of capacitive coupling from auxiliary patches. The integration of metallic strips and vias along the x-direction effectively suppresses surface waves, resulting in a 2 dB gain improvement in the higher frequency band for the element. The CMA then extended to the current distribution of a

$1\times 8$

array, excluding the feeding structure. Experimental results show reflection coefficient bandwidths of 26.6% (22.8–29.8 GHz) and 20.9% (33.4–41.2 GHz) for the n258, n257, and n260 bands, with stable radiation patterns and cross-polarization levels below −22 dB at 25, 29, 36, and 39 GHz. The measured peak realized gain is 15.2 dBi. Beam-scanning simulations demonstrate the array’s capability to steer the main beam with low scan loss and acceptable sidelobe levels, highlighting its potential for advanced wireless communication applications.

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基于特征模态分析的双频宽频u槽谐振超表面天线阵列

该通信提出了一种双频毫米波（mmW）天线阵列，采用u -槽谐振超表面天线（U-RMA）设计。利用特征模式分析（CMA），我们分析了一个U-RMA，包括馈线和馈线，以确定主要谐振模式、模式相互作用以及辅助贴片电容耦合的影响。沿着x方向的金属条和过孔的集成有效地抑制了表面波，从而使该元件在较高频段的增益提高了2db。然后，CMA扩展到$1\ × 8$数组的当前分布，不包括馈电结构。实验结果表明，n258、n257和n260频段的反射系数带宽分别为26.6% （22.8 ~ 29.8 GHz）和20.9% (33.4 ~ 41.2 GHz)，在25、29、36和39 GHz频段具有稳定的辐射方向图和低于- 22 dB的交叉极化电平。测得的峰值实现增益为15.2 dBi。波束扫描仿真证明了该阵列能够以低扫描损耗和可接受的副瓣电平引导主波束，突出了其在先进无线通信应用中的潜力。

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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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques