A CPW-Fed High-Gain Broadband Textile Antenna for Fall Detection

IF 1.7 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Communication Systems Pub Date : 2025-03-13 DOI:10.1002/dac.70061

Priyanka Das, Ravi Prakash Dwivedi, Richards Joe Stanislaus, Arvind Kumar

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引用次数: 0

Abstract

A flexible ultrawideband (UWB) antenna is designed to function in the 4–10 GHz band for wearable applications. The propounded antenna demonstrates substantial resistance to physical deformation and human body loading. The monopole antenna with 35 × 35 mm footprint is built using a CPW-fed tapered multiple stepped microstrip patch with curved ground plane. The proposed wearable design has a stable gain and front-to-back ratio (FBR) improvement over an UWB by using a tactically designed wearable frequency-selective surface (FSS) with its operating bandwidth coinciding with that of the antenna. The reflective FSS is placed 13 mm below the primary radiator to enhance the gain of the textile antenna by 6 dB across a fractional bandwidth of 90%. The FSS causes 69% reduction of specific absorption rate (SAR) and enhancement of FBR ranging from 12.7 to 20.3 dB. The FSS integrated antenna has a radiation efficiency of 75% when placed 0.07 λ away from the human phantom. Results from simulations and experiments show that the proposed antenna is a suitable candidate for wireless body area network (WBAN) applications.

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一种用于跌落检测的cpw馈电高增益宽带纺织天线

一种柔性超宽带（UWB）天线设计用于可穿戴应用的 4-10 GHz 频段。该天线具有很强的抗物理变形和人体负载能力。该单极天线的占地面积为 35 × 35 毫米，采用带弯曲地平面的 CPW-Fed 锥形多阶梯微带贴片。通过使用战术设计的可穿戴频率选择表面（FSS），所提出的可穿戴设计与 UWB 相比具有稳定的增益和前后比（FBR）改进，其工作带宽与天线的工作带宽一致。反射式 FSS 位于主辐射器下方 13 毫米处，可在 90% 的分数带宽内将纺织天线的增益提高 6 dB。FSS 使比吸收率（SAR）降低 69%，FBR 增强 12.7 至 20.3 dB。FSS 集成天线在距离人体模型 0.07 λ 处的辐射效率为 75%。模拟和实验结果表明，所提出的天线适用于无线体域网（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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来源期刊

International Journal of Communication Systems 工程技术-电信学

CiteScore

5.90

自引率

9.50%

发文量

323

审稿时长

7.9 months

期刊介绍： The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues. The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered: -Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.) -System control, network/service management -Network and Internet protocols and standards -Client-server, distributed and Web-based communication systems -Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity -Trials of advanced systems and services; their implementation and evaluation -Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation -Performance evaluation issues and methods.