A Low-Profile Tri-Port Multimode Metasurface-Based Antenna Using Characteristic Mode Analysis

IF 3.7 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-08 DOI:10.1109/LAWP.2025.3527036

Zhaoneng Jiang;Shuai Meng;Liying Nie;Jiquan Qi;Fangzheng Ji

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引用次数: 0

Abstract

In this letter, a metasurface (MTS)-based antenna is proposed for low-profile and multimode operation. An Omnidirectional radiation pattern is excited through a central coaxial cable. A pair of

$\text{e-TM}_{20}$

modes with broadside radiation patterns are excited via slot coupling. The size and shape of the peripheral patches of the MTS were adjusted by using characteristic mode analysis (CMA) to increase the bandwidth of the omnidirectional mode and decrease the resonant frequency of the

$\text{e-TM}_{20}$

mode. Three modes can operate independently without interfering due to the properly designed feeding networks for each mode. The isolation between ports is greater than 25 dB. The optimized size of the antenna is 0.96

$\lambda_{\min}$

× 0.96

$\lambda_{\min}$

× 0.07

$\lambda_{\min}$

. By enabling multiple modes to operate in different frequency bands on a single MTS, antenna cost, and occupied space can be significantly reduced.

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基于特征模分析的低轮廓三端口多模超表面天线

在这封信中，提出了一种基于超表面（MTS）的天线，用于低轮廓和多模操作。通过中心同轴电缆激发全向辐射方向图。通过狭缝耦合激发了一对具有宽侧辐射图样的$\text{e-TM}_{20}$模式。利用特征模态分析（CMA）对MTS外围贴片的大小和形状进行调整，增加了全向模式的带宽，降低了$\text{e-TM}_{20}$模式的谐振频率。三种模式可以独立工作而不受干扰，因为每种模式都设计了适当的馈电网络。端口间隔离度大于25db。优化后天线尺寸为0.96 $\lambda_{\min}$ × 0.96 $\lambda_{\min}$ × 0.07 $\lambda_{\min}$。通过在单个MTS上启用不同频段的多种模式，可以显著降低天线成本和占用空间。

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 Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.