每单元非相同元件的广角波束扫描 CRLH 漏波天线

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physica Scripta Pub Date : 2024-09-09 DOI:10.1088/1402-4896/ad693c

H Zamini, M Afsahi, H R Dalili Oskouei and M Mohammadi Shirkolaei

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引用次数: 0

摘要

本文提出、研究并实现了一种基于复合左右手超材料（CRLH）的广角扫描漏波天线（LWA），可在 C 波段频谱上工作，适用于移动应用。拟议的 LWA 包括九个基于 CRLH-MTM 的单元单元。利用串联槽和并联金属通孔应用了 CRLH-MTM 的特性。每个单元由三个贴片组成，两个外部贴片和一个较小的中间贴片。每个外部贴片上都蚀刻了一个槽，这两个槽的宽度不相等。此外，中间补丁与每个边补丁的距离也不同。结果表明，使用这种实现非相同元件的方法可以在过渡频率上实现适当的回波损耗，并提供平衡的 CRLH 超材料条件。此外，通过实现串联电容（槽）和并联电感（通孔），利用 CRLH-MTM 特性实现了从后向前的广角稀疏辐射模式。结果表明，尺寸仅为 251.5 × 30 × 1.575 mm3 的低频天线可在 4.8-6.13 GHz 的频率范围内工作，覆盖从到的宽波束扫描范围，并在 5.46 GHz 的中心频率上进行宽边辐射。拟议天线的辐射增益为 6.2-13.1 dB。这些成果证实了所提出的方法在实现高性能低波天线方面的有效性，同时还具有设计简单、外形小巧、成本低廉和易于制造等优点，适合移动应用。

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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A wide angle beam scanning CRLH leaky-wave antenna with non-identical elements per unit-cells

In this research article, a wide-angle scanning leaky-wave antenna (LWA) based on the composite right/left-handed (CRLH) metamaterial (MTM) operating over the C-band spectrum for mobile applications is proposed, investigated, and realized. The proposed LWA includes nine CRLH-MTM-based unit-cells. The properties of CRLH-MTM have been applied using series slots and shunt metallic via-holes. Each unit cell consists of three patches, two external patches, and one smaller middle patch implemented between them. One slot has been etched on each external patch; the width of these two slots is unequal. Moreover, the distance of the middle patch with each side patch is different. The results show that using this method of realizing non-identical elements caused the achievement of proper return-loss at the transition frequency and provided the balanced CRLH metamaterial condition. Additionally, using CRLH-MTM properties by realizing series capacitance (slot) and shunt inductance (via-holes) made the wide-angle scant from backward to forward radiation pattern. The results demonstrate that the LW antenna with small dimensions of 251.5 × 30 × 1.575 mm3 operates over a frequency range of 4.8–6.13 GHz covering a wide beam scanning range from to with broadside radiation at the center frequency of 5.46 GHz. The radiation gain of the proposed antenna varies from 6.2–13.1 dB. The achievements confirm the effectiveness of the proposed methods to realize a high-performance LW-antenna with the advantages of simple design, low profile, low cost, and easy of manufacture for mobile applications.

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来源期刊

Physica Scripta 物理-物理：综合

CiteScore

3.70

自引率

3.40%

发文量

782

审稿时长

4.5 months

期刊介绍： Physica Scripta is an international journal for original research in any branch of experimental and theoretical physics. Articles will be considered in any of the following topics, and interdisciplinary topics involving physics are also welcomed: -Atomic, molecular and optical physics- Plasma physics- Condensed matter physics- Mathematical physics- Astrophysics- High energy physics- Nuclear physics- Nonlinear physics. The journal aims to increase the visibility and accessibility of research to the wider physical sciences community. Articles on topics of broad interest are encouraged and submissions in more specialist fields should endeavour to include reference to the wider context of their research in the introduction.