A Compact Wearable 2.45 GHz Antenna for WBAN Applications

M. AbiTZerith, M. Nesasudha
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引用次数: 1

Abstract

In this paper, a compact flexible and wearable meandered structure microstrip patch antenna to resonate at 2.45 GHz frequency (ISM band) has been proposed. The proposed antenna substrate is designed using polydimethylsiloxane (PDMS) substrate with a dielectric constant of 2.71, loss tangent of 0.0134 and thickness of 1mm. The silicone polymer is highly flexible and well suited for wearable applications. The overall size of the proposed flexible antenna is 33x30x1 mm3. The parameters such as gain, return loss, directivity, VSWR, radiation efficiency and the surface current distribution of the designed antenna are analyzed and validated using finite element method based Ansys HFSS (High Frequency Simulator Software) software. The simulation results show that the antenna has a gain of 1.9 dB, -26.82 dB return loss, 100 MHz bandwidth (2.4 GHz – 2.5 GHz) based on |S 11 | ≤ -10 dB, a directivity of 2.1 and 92% radiation efficiency. The compact size and high flexibility of the proposed antenna makes it suitable for Wireless Body Area Network (WBAN) applications.
用于WBAN应用的紧凑型可穿戴2.45 GHz天线
本文提出了一种紧凑、柔性、可穿戴的弯曲结构微带贴片天线,其谐振频率为2.45 GHz (ISM频段)。天线衬底采用介电常数为2.71、损耗正切为0.0134、厚度为1mm的聚二甲基硅氧烷(PDMS)衬底设计。硅树脂聚合物具有很高的柔韧性,非常适合可穿戴应用。柔性天线的整体尺寸为33x30x1 mm3。利用Ansys HFSS (High Frequency Simulator Software)软件对设计天线的增益、回波损耗、指向性、驻波比、辐射效率和表面电流分布等参数进行了有限元分析和验证。仿真结果表明,该天线增益为1.9 dB,回波损耗为-26.82 dB,基于s11≤-10 dB的带宽为100 MHz (2.4 GHz ~ 2.5 GHz),指向性为2.1,辐射效率为92%。该天线体积小、灵活性高,适用于无线体域网络(WBAN)应用。
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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