基于液态金属开关的双 WiMAX 波段圆极化可重构天线

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Antennas and Propagation Pub Date : 2024-07-02 DOI:10.1109/OJAP.2024.3421932
Vahid Sharbati;Xiulong Bao;John J. Healy;Nan Zhang;Khatereh Nadali;Max J. Ammann
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引用次数: 0

摘要

本文介绍了一种创新的可重构天线(RA),它利用液态金属开关功能,设计用于双 WiMAX 频段(3.5 GHz 和 5.8 GHz)的圆极化。该天线通过采用连接寄生元件 (R2) 和馈电线的液态金属开关来实现圆极化重配置。值得注意的是,液态金属开关具有明显的优势,包括在导通状态下节省功耗,以及通过外加电压精确控制液态金属的移动。在微流体通道内动态操控共晶镓铟 (EGaIn) 可实现高效位移,从而在关断状态下实现 3 dB 轴向比带宽(2.5-3.7 GHz),在接通状态下实现 3 dB 轴向比带宽(5.45-6 GHz)。液态金属开关的概念首次引入了一种新功能:无需持续电压供应即可保持 "接通 "状态。所提出的可重构天线在开关性能方面有显著的改进,在射频开关方面也有明显的效果。
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Circularly Polarized Reconfigurable Antenna Based on Liquid Metal Switching for Dual WiMAX Bands
This article introduces an innovative reconfigurable antenna (RA) designed for circular polarization on the dual WiMAX frequency bands (3.5 GHz and 5.8 GHz) utilizing liquid metal switching capabilities. The antenna achieves circular polarization reconfiguration by employing a liquid metal switch connecting the parasitic element (R2) to the feed line. Notably, the liquid metal switch offers distinct advantages, including power savings in the ON state and precise control of liquid metal movement through applied voltage. The dynamic manipulation of Eutectic Gallium-Indium (EGaIn) within microfluidic channels enables efficient displacement, resulting in a 3 dB axial ratio bandwidth of (2.5–3.7 GHz) in the OFF state and (5.45–6 GHz) in the ON state. For the first time, the concept of liquid metal switches introduces a novel capability: the ability to maintain the “ON” state without the need for a continuous voltage supply. The proposed reconfigurable antenna demonstrates notable improvements in switching performance, with observed effectiveness in RF switching.
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来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
期刊最新文献
Front Cover Table of Contents Guest Editorial Introduction to the Special Section on Women’s Research in Antennas and Propagation Section (WRAPS) IEEE ANTENNAS AND PROPAGATION SOCIETY Electromagnetic and Thermal Co-Analysis of an Implanted Dipole Antenna
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