Design of a spring-line-shaped stretchable antenna with up to 40 % stretch ratio for human body strain sensing applications

IF 4.9 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI:10.1016/j.sna.2025.117010

Yimeng Wang , Yahui Hou , Shuhui Yang , Fang Yan , Han Qi , Rui Liu , Changyin Liu , Ziyi Chen , Li Zhang , Bin Li , Jingjing Liang , Jiajie Chu , Kaili Huo , Chenyin Yu

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引用次数: 0

Abstract

With the continuous update of communication technology, smart wearable devices are developing rapidly. It can be equipped with various sensors to monitor physiological indicators, helping users better understand their health conditions. Compared to traditional strain sensors, stretchable antennas have the characteristics of small size, low power consumption, and conformal integration with the skin. A stretchable antenna with a spring-line-shaped (SLS) structure is presented in this paper, exhibiting a stretch ratio of up to 40 %. We introduce the evolution process of the antenna structure and analyze the factors affecting the stretchability of SLS antenna. When the antenna is attached to human tissue, the specific absorption rate (SAR) value is 0.007 W/kg. The experimental results show that within the strain range of 0–40 %, the resonant frequency varies from 2.8 to 3.07 GHz and |S₁₁| remains below −15 dB. The Gauge Factor (GF) reaches 0.23, and the goodness of fit is 0.96. Hence, the proposed antenna has an excellent application prospect in the wearable device field.

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一种弹簧线形可拉伸天线的设计，拉伸率高达40% %，用于人体应变传感应用

随着通信技术的不断更新，智能可穿戴设备发展迅速。它可以配备各种传感器来监测生理指标，帮助用户更好地了解自己的健康状况。与传统的应变传感器相比，可拉伸天线具有体积小、功耗低、与皮肤共形集成等特点。本文提出了一种弹簧线形（SLS）结构的可拉伸天线，其拉伸比可达40% %。介绍了SLS天线结构的演变过程，分析了影响SLS天线拉伸性能的因素。当天线附着在人体组织上时，比吸收率（SAR）值为0.007 W/kg。实验结果表明，在0-40 %的应变范围内，谐振频率在2.8 ~ 3.07 GHz之间变化，|S11|保持在−15 dB以下。测量因子（GF）达到0.23，拟合优度为0.96。因此，该天线在可穿戴设备领域具有良好的应用前景。

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

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...

Design of a spring-line-shaped stretchable antenna with up to 40 % stretch ratio for human body strain sensing applications

Abstract

Design of a spring-line-shaped stretchable antenna with up to 40 % stretch ratio for human body strain sensing applications