Gain enhancement in octagonal shaped frequency reconfigurable antenna using metasurface superstrate

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Frequenz Pub Date : 2024-03-14 DOI:10.1515/freq-2023-0269

Karthika Kandasamy, Kavitha Kaliappan, Sasikala Shanmugam, Adithya Srinivasan

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引用次数: 0

Abstract

A novel, high-gain reconfigurable antenna with a metasurface (MS) superstrate-based configuration is proposed in this research article. The design utilizes a concentric octagonal-shaped patch as a base antenna. Four SMP1345-079LF PIN diode switches are incorporated in the base antenna to facilitate frequency reconfiguration. When all four of the diodes are in OFF condition, the designed antenna resonates at 5.8 GHz. Switching ON the diodes switches the resonating frequency to 5 GHz. A novel MS unit cell of shape like ‘8’ has been designed and analyzed. The designed unit cell exhibits properties of the metamaterial in the operating frequencies. An MS superstrate of a 5 × 5 array has been designed and connected to the base antenna through Teflon rods. Further, the proposed reconfigurable antenna with MS has been analyzed for air and foam medium (medium between antenna and superstrate). The proposed structure offers better performance for the air medium with a gain enhancement of 4.23 dBi and 1.55 dBi at 5 GHz and 5.8 GHz respectively. Fabrication and testing processes are undertaken to validate the proposed antenna’s performance.

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利用元表面叠层增强八角形频率可重构天线的增益

本文提出了一种基于元表面（MS）叠层配置的新型高增益可重构天线。该设计采用同心八角形贴片作为基底天线。基底天线中集成了四个 SMP1345-079LF PIN 二极管开关，以方便频率重新配置。当四个二极管都处于关断状态时，设计的天线谐振频率为 5.8 GHz。接通二极管后，谐振频率将切换到 5 GHz。我们设计并分析了一种形状类似 "8 "的新型 MS 单元。所设计的单元单元在工作频率下表现出超材料的特性。设计了一个 5 × 5 阵列的 MS 叠层，并通过聚四氟乙烯棒与基底天线相连。此外，还针对空气和泡沫介质（天线和叠层之间的介质）分析了所提出的带有 MS 的可重构天线。所提议的结构在空气介质中具有更好的性能，在 5 GHz 和 5.8 GHz 下分别增益 4.23 dBi 和 1.55 dBi。制作和测试过程验证了拟议天线的性能。

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

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.