Research Article | OPEN ACCESS
Parametric Study of Cylindrical Dielectric Resonator Antenna (CDRA) Feeder with Symmetric Parabolic Reflector
1S.M. Ali, 1M.A. Zakariya, 1Z. Baharudin, 1J.J. Adz, 2M.T. Jilani, 2M.F. Ain and 3Z.A. Ahmad
1Department of Electrical and Electronic Engineering, Universiti Teknologi PETRONAS Tronoh, Perak, Malaysia
2School of Electrical and Electronic Engineering
3School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang, Malaysia
Research Journal of Applied Sciences, Engineering and Technology 2015 6:607-617
Received: November 13, 2014 | Accepted: February 22, 2015 | Published: June 20, 2015
Abstract
In this study a parabolic reflector antenna is designed and fabricated for IEEE 802.11a WLAN application. Initially, a single element circular tuning slot coupled Cylindrical Dielectric Resonator Antenna (CDRA) feeder is designed and fabricated for a symmetric parabolic reflector. Subsequently, the designed feeder is integrated at the focal point of the parabolic reflector to provide unidirectional radiation pattern with improved gain and sidelobe levels. The measured fractional impedance bandwidth achieved for the proposed antenna is 1.8% for S11<-10 dB from 5.32 to 5.52 GHz. A radiation pattern with broadside radiation and low back radiation has been obtained. A good measurement gain of approximately 13 dB is achieved over the bandwidth by placing CDRA feeder at the focal point of the parabolic reflector. In addition, a comprehensive parametric study has been conducted to realize the effect of slot size and position on the resonance frequency of the designed feeder. Furthermore, a parametric study of various reflector parameters has also been performed to study the effect of size, depth and focal point of the parabolic reflector on gain of the antenna. Important design factors have been identified from the parametric study of the antenna. The experimental and measured results show that the designed antenna is suitable for IEEE WLAN 802.11a wireless application.
Keywords:
Aperture coupling, circular slot, Cylindrical Dielectric Resonator Antenna (CDRA) feeder, parabolic reflector antenna,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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