Gain enhancement of ultra-wideband hexagonal slot antenna using tessellated rhombic loops based reflector

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Frequenz Pub Date : 2024-02-10 DOI:10.1515/freq-2023-0183

Ashish Kumar Verma, Rahul Singhal

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Abstract

A simple technique for gain enhancement of irregular hexagonal shaped ultra-wide band (UWB) slot antenna by inclusion of closely packed tessellated rhombic loop (TRL) based FSS is presented in this paper. The slot antenna is designed to cover entire UWB (3.1–10.6 GHz) frequency range with stable bi-directional radiation pattern. Also, it exhibits non-uniform boresight gain in zenith (θ = 0°) and nadir (θ = 180°) directions. The slot antenna is further loaded with TRL FSS at both slot and feed side separately to study distinct configurations of antenna integrated with FSS and evaluate the impact of the configurations of FSS on antenna performance. Later, an antenna and antenna loaded with TRL FSS prototype are developed for experimental validations. Through measurements it is found that the slot antenna covers entire UWB frequency band and provides a maximum of 4.31 dB gain in zenith direction while 4 dB gain in nadir direction. A gain enhancement of 2.44 dB in zenith and 3.8 dB in nadir directions are achieved when the slot antenna is integrated with TRL FSS along feed side and slot side separately. The measured results confirm the simulated results well.

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使用基于网格菱形环的反射器增强超宽带六角槽天线的增益

本文介绍了一种简单的技术，即通过在不规则六边形超宽带（UWB）槽形天线中加入基于 FSS 的密布菱形环（TRL）来增强增益。设计的槽形天线可覆盖整个 UWB（3.1-10.6 GHz）频率范围，并具有稳定的双向辐射模式。此外，它还在天顶（θ = 0°）和天底（θ = 180°）方向表现出非均匀的孔径增益。为了研究与 FSS 集成的天线的不同配置，并评估 FSS 配置对天线性能的影响，进一步在槽和馈电侧分别加载 TRL FSS。随后，开发了天线和加载了 TRL FSS 的天线原型进行实验验证。通过测量发现，槽形天线覆盖了整个 UWB 频段，在天顶方向提供了 4.31 dB 的最大增益，在天底方向提供了 4 dB 的增益。当槽形天线在馈电侧和槽形侧分别与 TRL FSS 集成时，天顶方向的增益增强了 2.44 dB，天底方向的增益增强了 3.8 dB。测量结果很好地证实了模拟结果。

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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.