基于灵活超材料的印刷天线，用于可穿戴生物医学应用。

A Flexible Metamaterial Based Printed Antenna for Wearable Biomedical Applications.

机构信息

Department of Electrical Electronics Engineering, Gaziantep University, Gaziantep 27310, Turkey.

出版信息

Sensors (Basel). 2021 Nov 29;21(23):7960. doi: 10.3390/s21237960.

DOI:10.3390/s21237960

PMID:34883966

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8659625/

Abstract

This paper presents a microstrip antenna based on metamaterials (MTM). The proposed antenna showed several resonances around the BAN and ISM frequency bands. The antenna showed a suitable gain for short and medium wireless communication systems of about 1 dBi, 1.24 dBi, 1.48 dBi, 2.05 dBi, and 4.11 dBi at 403 MHz, 433 MH, 611 Mz, 912 MHz, and 2.45 GHz, respectively. The antenna was printed using silver nanoparticle ink on a polymer substrate. The antenna size was reduced to 20 × 10 mm to suit the different miniaturized wireless biomedical devices. The fabricated prototype was tested experimentally on the human body. The main novelty with this design is its ability to suppress the surface wave from the patch edges, significantly reducing the back radiation toward the human body when used close to it. The antenna was located on the human head to specify the specific absorption rate (SAR). It was found in all cases that the proposed antenna showed low SAR effects on the human body.

摘要

本文提出了一种基于超材料（MTM）的微带天线。所提出的天线在 BAN 和 ISM 频段周围显示出多个共振。该天线在大约 403 MHz、433 MHz、611 MHz、912 MHz 和 2.45 GHz 时，在短距离和中距离无线通信系统中具有约 1 dBi、1.24 dBi、1.48 dBi、2.05 dBi 和 4.11 dBi 的合适增益。天线使用银纳米粒子油墨印刷在聚合物基板上。天线尺寸缩小到 20×10mm，以适应不同的小型化无线生物医学设备。该制造原型在人体上进行了实验测试。该设计的主要新颖之处在于其能够抑制来自贴片边缘的表面波，当靠近人体时，显著减少对人体的反向辐射。天线位于人体头部以指定特定吸收率（SAR）。在所有情况下都发现，所提出的天线对人体显示出低 SAR 效应。