Frequency Reconfigurable Multiband MIMO Antenna Base on Gradient Arcs for IoT Devices

IF 0.8 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Advanced Electromagnetics Pub Date : 2021-10-14 DOI:10.7716/aem.v10i2.1524

D. T. T. Tu, N. V. Sang

引用次数: 0

Abstract

A frequency reconfigurable multi-band MIMO antenna is presented in this study. The single antenna consists of only one PIN diode that can change antenna operating frequencies from different quad-band to another one. Their bands not only cover the popular NB-IoT bands such as 900MHz, 1.8GHz, 2.4GHz for Z-Wave, ZigBee, RFID, GSM communication but also contain 5G IoT bands which are 2.4GHz, 2.6 GHz and 5GHz for LTE-A, 802.11n, ac, and 5G below 10GHz. Basing on the complex structure of ring and new moon shape, the single antenna achieves a compact size of 30 mm x 30 mm x 1.6 mm which is about 76% reduction compared to a conventional ring antenna at 900MHz. Besides, a structure of gradient arcs is proposed to decrease mutual coupling among closed-spaced elements of MIMO antenna for the distance of 0.033l at the lower band from edge to edge. The proposed antennas are analyzed by CST software, VNA measurement, and IEEE 802.11 USB Adapter that the simulated, measured as well as experimental results are agreed well.

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基于梯度弧的物联网设备频率可重构多频带MIMO天线

本研究提出一种频率可重构的多频带MIMO天线。单天线仅由一个PIN二极管组成，该二极管可以将天线的工作频率从不同的四频段转换为另一个四频段。他们的频段不仅涵盖了流行的NB-IoT频段，如900MHz, 1.8GHz, 2.4GHz的Z-Wave, ZigBee, RFID, GSM通信，还包含5G物联网频段，即2.4GHz, 2.6 GHz和5GHz的LTE-A, 802.11n, ac和10GHz以下的5G。基于环形和新月形状的复杂结构，单天线实现了30 mm × 30 mm × 1.6 mm的紧凑尺寸，与传统的900MHz环形天线相比，缩小了约76%。此外，还提出了一种梯度弧线结构，以减少MIMO天线下频带近距离0.033l的单元间相互耦合。采用CST软件、VNA测量和IEEE 802.11 USB适配器对所设计的天线进行了分析，仿真、测量和实验结果吻合良好。

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

Advanced Electromagnetics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.40

自引率

12.50%

发文量

审稿时长

10 weeks

期刊介绍： Advanced Electromagnetics, is electronic peer-reviewed open access journal that publishes original research articles as well as review articles in all areas of electromagnetic science and engineering. The aim of the journal is to become a premier open access source of high quality research that spans the entire broad field of electromagnetics from classic to quantum electrodynamics.