Circular Polarized Dual-Band Wearable Screen-Printed MIMO Antenna Integrated With AMC for WBAN Communications

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-12 DOI:10.1109/OJAP.2024.3458968

S. Arulmurugan;T. R. Suresh Kumar;Johan Sidén;Zachariah C. Alex

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引用次数: 0

Abstract

A novel dual-band circularly polarized MIMO wearable antenna is screen-printed on a cotton polyester fabric to operate at 2.45 and 5.8 GHz wireless body area network communications. The MIMO fabric antenna is realized with two circularly polarized wearable antennas arranged in orthogonal directions, which provides a less than −10 dB bandwidth of 400 MHz from 2.2 to 2.6 GHz and 800 MHz from 5.3 to 6.1 GHz, with impedance bandwidth of 17 and 14% for lower and higher bands, respectively. The antenna provides an axial ratio bandwidth (below 3 dB) of 3% from 2.4 to 2.47 GHz and 8% from 5.45 to 5.94 GHz. The proposed MIMO antenna is integrated with an artificial magnetic conductor, which helps to create isolation between the human body and antenna, which also minimizes the specific absorption rate (SAR). The antenna SAR performance is tested on the HUGO model, which gives 0.025, 0.035 W/Kg for 1g tissue at 2.45 and 5.8 GHz. Furthermore, the antenna provides good MIMO characteristics such as envelope correlation coefficient, diversity gain, and channel capacity. The antenna is suitable for flexible wearable applications due to fabric substrate, screen printing, low SAR, and lightweight.

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用于 WBAN 通信的集成 AMC 的圆极化双频可穿戴式屏幕印刷 MIMO 天线

一种新型双频圆极化 MIMO 可穿戴天线被丝网印刷在棉质聚酯织物上，可在 2.45 和 5.8 GHz 无线体域网络通信中工作。该 MIMO 织物天线由两个正交方向排列的圆极化可穿戴天线实现，在 2.2 至 2.6 GHz 频段和 5.3 至 6.1 GHz 频段分别提供小于 -10 dB 的 400 MHz 带宽和 800 MHz 带宽，低频段和高频段的阻抗带宽分别为 17% 和 14%。该天线的轴向比带宽（低于 3 dB）在 2.4 至 2.47 GHz 之间为 3%，在 5.45 至 5.94 GHz 之间为 8%。拟议的多输入多输出天线集成了人工磁导体，有助于在人体和天线之间建立隔离，这也最大限度地降低了比吸收率（SAR）。天线的 SAR 性能在 HUGO 模型上进行了测试，在 2.45 和 5.8 GHz 频率下，1g 组织的 SAR 值分别为 0.025 和 0.035 W/Kg。此外，该天线还具有良好的多输入多输出（MIMO）特性，如包络相关系数、分集增益和信道容量。由于采用织物基材、丝网印刷、低 SAR 和重量轻，该天线适用于灵活的可穿戴应用。

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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