Dual-Band Metamaterial-Based EBG Antenna for Wearable Wireless Devices

IF 0.9 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-06-02 DOI:10.1155/2023/2232674

Trong Hieu Dam, M. Le, Quoc-Cuong Nguyen, Thanh Tung Nguyen

引用次数: 0

Abstract

In this paper, a wearable dual-band T-shaped antenna using a coplanar waveguide (CPW) fed operating at 2.4 GHz and 5.2 GHz bands is proposed for onbody wireless communications applications. Without the metamaterial-based electromagnetic bandgap (EBG) layer, the original antenna covers two bands from 1.96 GHz to 2.77 GHz and from 5.07 GHz to 5.35 GHz. The antenna efficiency decreases when it is placed on the human arm due to the interference from the human body to the antenna, as shown by a high specific absorption rate (SAR) value. These SAR values are reduced to 77.1% at 2.4 GHz and 91.7% at 5.2 GHz by the proposed EBG. The antenna gain is therefore improved to 1.4 dBi at 2.4 GHz and 6.25 dBi at 5.2 GHz. The antenna prototype is evaluated using a Wi-Fi wearable device, resulting in an improved signal-to-noise ratio (SNR) of 6-12 dB.

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用于可穿戴无线设备的基于双频超材料的EBG天线

在本文中，使用共面波导（CPW）馈电的可穿戴双频T形天线工作在2.4 GHz和5.2 GHz频带被提议用于体上无线通信应用。在没有基于超材料的电磁带隙（EBG）层的情况下，原始天线覆盖了1.96的两个波段 GHz至2.77 GHz及5.07 GHz至5.35 GHz。当天线放置在人体手臂上时，由于人体对天线的干扰，天线效率降低，如高比吸收率（SAR）值所示。这些SAR值在2.4时降低到77.1% GHz，在5.2时为91.7% GHz。因此，天线增益提高到1.4 2.4时的dBi GHz和6.25 5.2时的dBi GHz。使用Wi-Fi可穿戴设备对天线原型进行了评估，从而提高了6-12的信噪比 dB。

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

International Journal of RF and Microwave Computer-Aided Engineering 工程技术-工程：电子与电气

CiteScore

4.00

自引率

23.50%

发文量

489

审稿时长

3 months

期刊介绍： International Journal of RF and Microwave Computer-Aided Engineering provides a common forum for the dissemination of research and development results in the areas of computer-aided design and engineering of RF, microwave, and millimeter-wave components, circuits, subsystems, and antennas. The journal is intended to be a single source of valuable information for all engineers and technicians, RF/microwave/mm-wave CAD tool vendors, researchers in industry, government and academia, professors and students, and systems engineers involved in RF/microwave/mm-wave technology. Multidisciplinary in scope, the journal publishes peer-reviewed articles and short papers on topics that include, but are not limited to. . . -Computer-Aided Modeling -Computer-Aided Analysis -Computer-Aided Optimization -Software and Manufacturing Techniques -Computer-Aided Measurements -Measurements Interfaced with CAD Systems In addition, the scope of the journal includes features such as software reviews, RF/microwave/mm-wave CAD related news, including brief reviews of CAD papers published elsewhere and a "Letters to the Editor" section.