Design and characterization of compact dual-band wearable antenna for wireless healthcare applications

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

Aeu-International Journal of Electronics and Communications Pub Date : 2025-04-17 DOI:10.1016/j.aeue.2025.155818

Brenda M, Chettiar Ramachandra Bharathi

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引用次数: 0

Abstract

Wearable antennas are increasingly vital in modern wireless communication, particularly for Wireless Body Area Networks and IoT-enabled healthcare applications. This paper presents the design and characterization of a compact planar dual-band flexible antenna operating at 2.42 GHz (Wi-Fi band) and 5.5 GHz (WLAN/ISM band) for wearable and smart textile applications. The antenna employs a rectangular ring meandered element along with a Defected Ground Structure to enhance bandwidth and improve impedance matching. Fabricated on a semi-flexible Rogers 5880 substrate (εr = 2.2, thickness H = 0.2544 mm, tan δ = 0.0009), the proposed antenna has a compact form factor of 0.45λg × 0.28λg. Experimental validation shows a peak gain of 7.46 dB at 2.42 GHz and 8.13 dB at 5.5 GHz, with high radiation efficiency. Bending analysis confirms stable resonance performance under deformation, making it ideal for on-body communication. Additionally, Specific Absorption Rate analysis at 2.42 GHz and 5.5 GHz confirms compliance with FCC safety limits, ensuring electromagnetic safety for prolonged wearable use. The proposed dual-band antenna is a suitable for WBANs, IoT-based healthcare monitoring, and next-generation wearable communication systems.

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用于无线医疗应用的紧凑型双频可穿戴天线的设计和特性

可穿戴天线在现代无线通信中越来越重要，特别是对于无线体域网络和支持物联网的医疗保健应用。本文介绍了一种紧凑型平面双频柔性天线的设计和特性，工作频率为2.42 GHz （Wi-Fi频段）和5.5 GHz （WLAN/ISM频段），适用于可穿戴和智能纺织品应用。该天线采用矩形环形弯曲元件和缺陷接地结构来增强带宽和改善阻抗匹配。该天线在半柔性Rogers 5880衬底（εr = 2.2，厚度H = 0.2544 mm, tan δ = 0.0009）上制作，具有0.45λg × 0.28λg的紧凑外形系数。实验验证表明，该系统在2.42 GHz和5.5 GHz频段的峰值增益分别为7.46 dB和8.13 dB，具有较高的辐射效率。弯曲分析证实了在变形下稳定的共振性能，使其成为身体通信的理想选择。此外，2.42 GHz和5.5 GHz的比吸收率分析确认符合FCC安全限制，确保长时间可穿戴使用的电磁安全。所提出的双频天线适用于wban、基于物联网的医疗监控和下一代可穿戴通信系统。

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.