Metamaterial-Based AMC Antenna With Reduced RCS and Increased Bandwidth for Wireless X-Band Applications

IF 1.7 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Communication Systems Pub Date : 2025-02-17 DOI:10.1002/dac.70019

Barun Dhabal, Akhilesh Kumar, Arnab Nandi, Banani Basu

{"title":"Metamaterial-Based AMC Antenna With Reduced RCS and Increased Bandwidth for Wireless X-Band Applications","authors":"Barun Dhabal, Akhilesh Kumar, Arnab Nandi, Banani Basu","doi":"10.1002/dac.70019","DOIUrl":null,"url":null,"abstract":"<div>\n \n This paper presents a method to enhance antenna bandwidth, reduce radar cross section (RCS), and increase antenna gain by using a metamaterial-based artificial magnetic conductor (AMC) structure for the applications of X-band. In the suggested antenna, we provide a coaxial probe-fed with 50<math>\n <semantics>\n <mrow>\n <mi>Ω</mi>\n </mrow>\n <annotation>$$ \\varOmega $$</annotation>\n </semantics></math> impedance matching circuit. Furthermore, in the presented work, two AMC unit cells are designed to achieve a 180° reflection phase difference across a wide frequency range, and these unit cells are employed to construct a chessboard-like metamaterial surface (CLMS) for low RCS. The AMC structures provide an adequate bandwidth in the desired frequency by adjusting the phase. A 3 <math>\n <semantics>\n <mrow>\n <mo>×</mo>\n </mrow>\n <annotation>$$ \\times $$</annotation>\n </semantics></math> 3 periodic AMC structure with a defected ground structure (DGS) configuration is proposed and experimentally demonstrated to enhance antenna bandwidth and gain. The antenna's overall size is significantly reduced to (1.35<math>\n <semantics>\n <mrow>\n <msub>\n <mrow>\n <mi>λ</mi>\n </mrow>\n <mrow>\n <mn>0</mn>\n </mrow>\n </msub>\n </mrow>\n <annotation>$$ {\\lambda}_0 $$</annotation>\n </semantics></math> <math>\n <semantics>\n <mrow>\n <mo>×</mo>\n </mrow>\n <annotation>$$ \\times $$</annotation>\n </semantics></math> 1.35<math>\n <semantics>\n <mrow>\n <msub>\n <mrow>\n <mi>λ</mi>\n </mrow>\n <mrow>\n <mn>0</mn>\n </mrow>\n </msub>\n </mrow>\n <annotation>$$ {\\lambda}_0 $$</annotation>\n </semantics></math>) with a thickness of (0.025<math>\n <semantics>\n <mrow>\n <msub>\n <mrow>\n <mi>λ</mi>\n </mrow>\n <mrow>\n <mn>0</mn>\n </mrow>\n </msub>\n </mrow>\n <annotation>$$ {\\lambda}_0 $$</annotation>\n </semantics></math>); here, <math>\n <semantics>\n <mrow>\n <msub>\n <mrow>\n <mi>λ</mi>\n </mrow>\n <mrow>\n <mn>0</mn>\n </mrow>\n </msub>\n </mrow>\n <annotation>$$ {\\lambda}_0 $$</annotation>\n </semantics></math> is free space wavelength at 9.8 GHz operating frequency, with an AMC structure. The proposed antenna with the DGS ground structure has been constructed and tested. The results of the simulations and measurements demonstrate an excellent gain performance and improved bandwidth.\n </div>","PeriodicalId":13946,"journal":{"name":"International Journal of Communication Systems","volume":"38 5","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Communication Systems","FirstCategoryId":"94","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/dac.70019","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

This paper presents a method to enhance antenna bandwidth, reduce radar cross section (RCS), and increase antenna gain by using a metamaterial-based artificial magnetic conductor (AMC) structure for the applications of X-band. In the suggested antenna, we provide a coaxial probe-fed with 50 $Ω$ impedance matching circuit. Furthermore, in the presented work, two AMC unit cells are designed to achieve a 180° reflection phase difference across a wide frequency range, and these unit cells are employed to construct a chessboard-like metamaterial surface (CLMS) for low RCS. The AMC structures provide an adequate bandwidth in the desired frequency by adjusting the phase. A 3 $\times$ 3 periodic AMC structure with a defected ground structure (DGS) configuration is proposed and experimentally demonstrated to enhance antenna bandwidth and gain. The antenna's overall size is significantly reduced to (1.35 $λ_{0}$ $\times$ 1.35 $λ_{0}$ ) with a thickness of (0.025 $λ_{0}$ ); here, $λ_{0}$ is free space wavelength at 9.8 GHz operating frequency, with an AMC structure. The proposed antenna with the DGS ground structure has been constructed and tested. The results of the simulations and measurements demonstrate an excellent gain performance and improved bandwidth.

Abstract Image

查看原文本刊更多论文

本文提出了一种在 X 波段应用中通过使用基于超材料的人工磁导体（AMC）结构来增强天线带宽、减小雷达截面（RCS）和提高天线增益的方法。在建议的天线中，我们提供了一个带有 50 Ω $$ \varOmega $$ 阻抗匹配电路的同轴探针。此外，本文还设计了两个 AMC 单元，可在宽频率范围内实现 180° 反射相位差，并利用这些单元构建了棋盘状超材料表面（CLMS），以实现低 RCS。AMC 结构通过调整相位在所需频率上提供了足够的带宽。我们提出了一种具有缺陷地面结构（DGS）配置的 3 × $ $ \times $ $ 3 周期性 AMC 结构，并进行了实验演示，以提高天线带宽和增益。天线的整体尺寸大幅减小至（1.35 λ 0 $$ {\lambda}_0 $$ × $$ \times $$ 1.35 λ 0 $$ {\lambda}_0 $$），厚度为（0.025 λ 0 $$ {\lambda}_0 $$）；此处，λ 0 $$ {\lambda}_0 $$为工作频率为 9.8 GHz、采用 AMC 结构的自由空间波长。带 DGS 地面结构的拟议天线已建成并进行了测试。仿真和测量结果表明，该天线具有出色的增益性能和更高的带宽。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Communication Systems 工程技术-电信学

CiteScore

5.90

自引率

9.50%

发文量

323

审稿时长

7.9 months

期刊介绍： The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues. The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered: -Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.) -System control, network/service management -Network and Internet protocols and standards -Client-server, distributed and Web-based communication systems -Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity -Trials of advanced systems and services; their implementation and evaluation -Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation -Performance evaluation issues and methods.