用于I.S.M身体中心通信系统的多波段可穿戴纺织天线

Mujeeb Abdullah, Adam Khan
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引用次数: 7

摘要

由于可穿戴天线在国防、医疗和无线通信设备上的应用,其使用趋势不断上升。大多数便携式电子设备都需要多波段小型天线来进行数据和语音服务。本文介绍了可穿戴天线的发展现状,重点介绍了可穿戴天线的设计和分析问题。研究了采用不同电纺织基材制备的多波段小型化贴片天线的实验特性。小型化是通过在贴片天线上设置t形槽和采用斜接技术实现的。通过斜切技术,在辐射贴片的拐角处去除多余的金属部分,从而减少电容,从而降低反射系数,因为在拐角处的零电流被去除。天线的工作频率包括2.45 GHz到6ghz的工业、科学和医疗(ISM)频段通信。通过分析天线的反射系数、驻波比、阻抗带宽和对人体血液的比吸收率(SAR),对天线的性能进行了研究。仿真结果表明,由于辐射贴片的弯曲和柔性衬底的影响,天线结构的变化对带宽和工作频率有不同的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multiband wearable textile antenna for I.S.M body center communication systems
Wearable antenna utilization trend has been observed on raise due to its application for defense, medical and wireless communication devices. Most of portable electronic devices require multi-band compact antenna for operating for data and voice service. This paper presents the current state of art of the wearable antenna development, focusing on design and analysis issues. The investigation is focused on experimental characterization of multi-band miniaturized patch antenna using different electro textile substrate. The miniaturization is achieved by T-shape slot in the patch antenna and by using technique of mitering. By using technique of mitering extra part of metal is removed at the corner of the radiating patch resulting in reduction of capacitance and thus reducing the reflection coefficient as current null at the corner are removed. The antennas operating frequency consist of the industrial, scientific and medical (ISM) band from 2.45 GHz to 6 GHz Band of communication. The antenna performance was investigated by analyzing its reflection coefficient, VSWR, impendence bandwidth, and Specific Absorption Rate (SAR) for human blood. The simulation results show that there are various effects on bandwidth and frequency of operation as the structure of antenna is varied due to bending of radiating patch and flexible substrate.
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