用于可穿戴/植入式应用的超扁平 CPW 保形天线。

IF 1.4 4区 医学 Q4 ENGINEERING, BIOMEDICAL Technology and Health Care Pub Date : 2024-01-01 DOI:10.3233/THC-220534
B Thyla, V Thulasi Bai
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引用次数: 0

摘要

背景:在 4G 和 5G 无线通信标准中,以身体为中心的网络在各种设备之间的无线通信中发挥着重要作用:本研究涉及一种适用于可穿戴应用的宽带共形共平面波导(CPW)天线:拟议的 CPW 天线印制在 0.1 毫米厚的生物兼容聚酰亚胺衬底上,其介电常数和介电常数分别为 3.5 和 0.02。天线的总面积约为 17.5 × 15 平方毫米,明显小于文献中提出的可穿戴天线。设计的天线可在新的 ISM 频段 5.8 GHz 工作,带宽为 5.3-6.3 GHz,电压驻波比为 2:1。天线印制在柔性基板上,因此通过弯曲分析评估了器件的坚固性。结果显示,所设计的 CPW 天线在所需的工作频谱范围内性能优越:将天线放置在人体模型的不同位置后计算出的比吸收率(SAR)显示,SAR 值低于联邦通信委员会(FCC)建议的最大余量 1.6 W/Kg,即在 5.5-6.1 GHz 的测试频率范围内,用 1 克和 10 克人体模型组织进行测试时,SAR 值分别为 0.9987 和 0.921 W/Kg。该天线的辐射效率约为 92%,总体增益为 5.2 dBi,这对于可穿戴应用来说是一个可观的数值:这项研究的成果揭示了所推荐的天线成为未来物联网(IoT)应用主要竞争者的可行性。
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A very low-profile CPW based conformal antenna for wearable/implantable applications.

Background: In wireless communication standard 4G and 5G, the body centric network plays an important role for the wireless communication between various devices.

Objective: This research relates to a wide-band conformal co-planar waveguide (CPW) antenna for wearable applications.

Methods: The proposed CPW antenna is printed on 0.1 mm thick bio-compatible polymide substrate whose dielectric constant and permittivity are 3.5 and 0.02 respectively. The total area of the antenna is around 17.5 × 15 mm2 which is significantly smaller than the wearable antennas proposed in literature. The proposed antenna is designed to operate in new ISM band 5.8 GHz with the bandwidth of 5.3-6.3 GHz with 2:1 Voltage Standing Wave Ratio (VSWR). The antenna is printed on the flexible substrate and hence robustness of device is evaluated by bending analysis. It reveals the superior performance of the designed CPW antenna over the desired spectrum of operation.

Results: Specific Absorption Rate (SAR) is calculated after placing the antenna at various places of human phantom model and showed that SAR values are below 1.6 W/Kg which is the maximum margin recommended by Federal Communication Commission (FCC), i.e when tested with 1 g and 10 g of human tissue of phantom model, for the test frequency range of 5.5-6.1 GHz, SAR value falls between 0.9987 and 0.921 W/Kg respectively. The antenna also shows the radiation efficiency around 92% with overall realized gain 5.2 dBi which are substantial values for wearable applications.

Conclusion: The outcomes of this research revealed the feasibility of the recommended antenna becoming a major contender of future Internet of Things (IoT) applications.

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来源期刊
Technology and Health Care
Technology and Health Care HEALTH CARE SCIENCES & SERVICES-ENGINEERING, BIOMEDICAL
CiteScore
2.10
自引率
6.20%
发文量
282
审稿时长
>12 weeks
期刊介绍: Technology and Health Care is intended to serve as a forum for the presentation of original articles and technical notes, observing rigorous scientific standards. Furthermore, upon invitation, reviews, tutorials, discussion papers and minisymposia are featured. The main focus of THC is related to the overlapping areas of engineering and medicine. The following types of contributions are considered: 1.Original articles: New concepts, procedures and devices associated with the use of technology in medical research and clinical practice are presented to a readership with a widespread background in engineering and/or medicine. In particular, the clinical benefit deriving from the application of engineering methods and devices in clinical medicine should be demonstrated. Typically, full length original contributions have a length of 4000 words, thereby taking duly into account figures and tables. 2.Technical Notes and Short Communications: Technical Notes relate to novel technical developments with relevance for clinical medicine. In Short Communications, clinical applications are shortly described. 3.Both Technical Notes and Short Communications typically have a length of 1500 words. Reviews and Tutorials (upon invitation only): Tutorial and educational articles for persons with a primarily medical background on principles of engineering with particular significance for biomedical applications and vice versa are presented. The Editorial Board is responsible for the selection of topics. 4.Minisymposia (upon invitation only): Under the leadership of a Special Editor, controversial or important issues relating to health care are highlighted and discussed by various authors. 5.Letters to the Editors: Discussions or short statements (not indexed).
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