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A Novel Low Profile Rectangular Microstrip Patch Antenna for L-Band Applications Using High Permittivity Substrate

Author(s)
GULZAR AHMAD Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan
ASIF SULTAN Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan
TARIQULLAH JAN Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan
MAJID ASHRAF Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan
AND MUHAMMAD SARIM Department of Computer Science, Federal Urdu University of Arts, Science & Technology, Karachi, Pakistan
Abstract
A novel low-profile and miniaturized patch antenna on a substrate material of high dielectric constanthas been designed, fabricated and tested in an indigenous laboratory. It is highly important to reduce thesize of patch antenna as it limits the reduction of the sizes of the devices using this antenna. A number of techniques have been given for the size reduction of patch such as DGS (Defected Ground Structure), use of fractals and the use of metamaterials but in this paper the technique of high permittivity substrate has been implemented. The substrate as well as this conventional antenna has been prepared locally in Pakistan.A ceramic material of chemical composition {(Sr0.5Pb0.25Ca0.25)-Tio3-3Bi2O3.TiO2} having a high dielectric constant has been used in the substrate of the antenna. The fabricated prototype was investigated experimentally for important parameters using Vector Network analyzer. The total measure of the antenna is 20.5x26.5x1.5 mm3. The antenna presented a large bandwidth of 186 MHz (1070-1256 MHz) in L-Band with a Return Loss of 21.10 dB at resonance. The VSWR (Voltage Standing Wave Ratio) remained under the standard value of 2 in the whole operating range. The proposed antenna may be employed in GPS (Global Positioning System) devices, Amateur Radio, Terrestrial Mobile Communication, Aeronautical and Maritime Mobile and other Military and Low Earth Orbit Satellite Communications.
Publication Details
Page(s) 915-922
DOI 10.22581/muet1982.1904.05
Published Journal: Mehran University Research Journal of Engineering and Technology, Volume: 38, Issue: 4, Year: 2019

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Keywords
L-Band, low profile, Maritime, Aeronautical., High Permittivity, Global Positioning System
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