Improving gain of ultra-wideband planar antennas: A grounded frequency-selective surface reflector

Al Gburi, Ahmed Jamal Abdullah and Zakaria, Zahriladha and Alhassoon, Khaled and Mohd Ibrahim, Imran and Jamil Alsayaydeh, Jamil Abedalrahim (2023) Improving gain of ultra-wideband planar antennas: A grounded frequency-selective surface reflector. TELKOMNIKA Telecommunication, Computing, Electronics and Control, 21 (6). pp. 1204-1212. ISSN 1693-6930

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Abstract

This paper introduces a method to enhance the gain of ultra-wideband (UWB) planar antennas by employing a grounded frequency-selective surface (FSS) as a reflector. The grounded FSS reflector comprises square patch structures (SPSs) of unit cells with a complete ground plane. The designed FSS utilizes miniaturized unit cells that are printed on both sides of an FR4 substrate, making it highly suitable for a wide range of applications, particularly as a reflector to optimize the gain of UWB omnidirectional radiators. This concept is demonstrated by employing a circular monopole UWB antenna as the radiator. The measured outcomes of the suggested antenna with the grounded FSS maintain a broad frequency range of bandwidth of 9.162 GHz, spanning from 2.638 GHz to 11.8 GHz. The antenna, in combination with the FSS, achieves a significant measured gain of 7.6 dBi and a high efficiency of 93% at 9.6 GHz. The attributes of the suggested UWB FSS make it an ideal solution for seamless combining with small-sized broadband circuits, thereby maximizing its effectiveness.

Item Type:	Article
Uncontrolled Keywords:	Frequency-selective surface, Gain, Grounded reflector, Planar antenna, Ultra-wideband
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	14 Mar 2025 16:27
Last Modified:	14 Mar 2025 16:27
URI:	http://eprints.utem.edu.my/id/eprint/28514
Statistic Details:	View Download Statistic

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