A passive beamforming hemispherical liquid antenna using a simple metal ball

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2024-07-15 DOI:10.1049/mia2.12497

Viswanadh Raviteja Gudivada, Yi Huang, Elliot L. Bennett

引用次数: 0

Abstract

The authors propose a novel yet simple way of passive beamforming using a liquid antenna. A hemispherical dielectric resonator antenna filled with a dielectric liquid is considered to realise the fundamental TE₁₁₁ mode, and a small, weighted metal ball is dropped inside the hemispherical container. This metal ball functions as a movable director and passively steers the realised fundamental mode of the DRA always towards the ground. The proposed design finds its applications in static-subject-based applications such as indoor base stations, and beam-stabilisation/pattern-correction works in case of dynamic-subject-based applications. The overall profile of the antenna is 0.60λ₀ × 0.60λ₀ × 0.19λ₀ targeting the ISM band at 2.4 GHz with decent efficiency and far-field characteristics. The working prototype is developed and experimentally verified.

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使用简单金属球的无源波束成形半球形液体天线

作者提出了一种利用液体天线进行无源波束成形的新颖而简单的方法。一个半球形的介质谐振器天线中充满了介质液体，用来实现 TE111 的基频模式。这个金属球充当可移动的导向器，始终被动地将实现的 DRA 基频模式导向地面。所提出的设计适用于室内基站等基于静态对象的应用，以及基于动态对象的应用中的波束稳定/模式校正工作。天线的整体外形尺寸为 0.60λ0 × 0.60λ0 × 0.19λ0，目标频段为 2.4 GHz 的 ISM 频段，具有良好的效率和远场特性。工作原型已开发完成并通过实验验证。

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

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf