Improving gain of ultra-wideband planar antennas: A grounded frequency-selective surface reflector
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 utili...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Universitas Ahmad Dahlan
2023
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| Online Access: | http://eprints.utem.edu.my/id/eprint/28514/2/0248721112023433.pdf http://eprints.utem.edu.my/id/eprint/28514/ https://telkomnika.uad.ac.id/index.php/TELKOMNIKA/article/view/25312 http://doi.org/10.12928/telkomnika.v21i6.25312 |
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| Summary: | 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. |
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