A low profile and wideband textile metasurface-based circular polarized antenna for wearable applications

IF 3.1 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2026-05-01 Epub Date: 2026-03-06 DOI:10.1016/j.aeue.2026.156284

Mohamed El Atrash , Nourhan T. Hassan , Mahmoud A. Abdalla

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引用次数: 0

Abstract

A wideband, low profile, compact, and Circularly Polarized (CP) slot antenna loaded by a metasurface structure array is introduced for wearable usage. The whole structure is realized using textile materials. By etching two square slots in diagonal geometry and engraving a U-shaped slot off the Co-Planar Waveguide (CPW) ground, CP was attained along with enhancement in the 3 dB-Axial Ratio Bandwidth. The proposed CP antenna radiates from 1.35 GHz to 4 GHz, which is the impedance bandwidth; thus, covering the 2.45 GHz Industrial, Scientific, and Medical (ISM)-band. The Axial Ratio (AR) bandwidth varies from 1.6 GHz to 2.5 GHz. As such, the effective operational bandwidth for the proposed CP antenna is 1.6 GHz to 2.5 GHz. The antenna electrical size is 0.33λ₀ × 0.37λ₀ at 2.45 GHz, highlighting its compactness. To achieve low Specific Absorption Rate (SAR), a textile-based 2 × 2 metasurface structure array is loaded at the back of the CP antenna. Wideband operation was preserved after the integration process with the advantage of reducing the specific absorption rate by 99%, while achieving gain improvements over the wideband frequency band. Fabrications were conducted manually, yet the tested outcomes agreed with the software-generated results. The designed antenna has very good competitive results compared to the literature antennas.

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一种用于可穿戴应用的低轮廓宽带纺织超表面圆极化天线

介绍了一种采用超表面结构阵列加载的宽带、低轮廓、紧凑的圆极化（CP）缝隙天线。整个结构采用纺织材料实现。通过在共面波导（CPW）地面上刻蚀两个对角线几何形状的方形槽和雕刻一个u形槽，获得了共面波导，并增强了3db -轴比带宽。所提出的CP天线辐射范围为1.35 GHz ~ 4 GHz，为阻抗带宽；因此，覆盖2.45 GHz工业、科学和医疗（ISM）频段。AR （Axial Ratio）带宽范围为1.6 GHz ~ 2.5 GHz。因此，所提出的CP天线的有效工作带宽为1.6 GHz ~ 2.5 GHz。天线在2.45 GHz时的电气尺寸为0.33λ0 × 0.37λ0，突出了其紧凑性。为了实现低比吸收率（SAR），在CP天线的背面加载了一个基于纺织品的2 × 2超表面结构阵列。集成后保留了宽带操作，其优点是比吸收率降低了99%，同时实现了宽带频带增益的提高。手工制作，但测试结果与软件生成的结果一致。与文献天线相比，所设计的天线具有很好的竞争效果。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.