ORCID Profile
0000-0002-3565-208X
Current Organisations
University of Queensland
,
East Delta University
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Publisher: Wiley
Date: 29-12-2020
DOI: 10.1111/LIV.14671
Publisher: Wiley
Date: 27-04-2015
DOI: 10.1002/MOP.29161
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2018
Publisher: Kaunas University of Technology (KTU)
Date: 11-11-2013
Publisher: The Electromagnetics Academy
Date: 2013
DOI: 10.2528/PIER12121205
Publisher: IEEE
Date: 12-2012
Publisher: Hindawi Limited
Date: 2013
DOI: 10.1155/2013/507158
Abstract: Electromagnetic band gap (EBG) technology has become a significant breakthrough in the radio frequency (RF) and microwave applications due to their unique band gap characteristics at certain frequency ranges. Since 1999, the EBG structures have been investigated for improving performances of numerous RF and microwave devices utilizing the surface wave suppression and the artificial magnetic conductor (AMC) properties of these special type metamaterial. Issues such as compactness, wide bandwidth with low attenuation level, tunability, and suitability with planar circuitry all play an important role in the design of EBG structures. Remarkable efforts have been undertaken for the development of EBG structures to be compatible with a wide range of wireless communication systems. This paper provides a comprehensive review on various EBG structures such as three-, two-, and one-dimensional (3D, 2D, and 1D) EBG, mushroom and uniplanar EBG, and their successive advancement. Considering the related fabrication complexities, implementation of vialess EBG is an attractive topic for microwave engineers. For microstrip antennas, EBG structures are used in ersified ways, which of course found to be effective except in some cases. The EBG structures are also successfully utilized in antenna arrays for reducing the mutual coupling between elements of the array. Current challenges and limitations of the typical microstrip antennas and different EBG structures are discussed in details with some possible suggestions. Hopefully, this survey will guide to increasing efforts towards the development of more compact, wideband, and high-efficient uniplanar EBG structures for performance enhancement of antenna and other microwave devices.
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/159468
Abstract: A multiband microstrip resonator is proposed in this study which is realized through a rectangular radiator with embedded symmetrical rectangular slots in it and a defected ground surface. The study is presented with detailed parametric analyses to understand the effect of various design parameters. The design and analyses are performed using the FIT based full-wave electromagnetic simulator CST microwave studio suite. With selected parameter values, the resonator showed a peak gain of 5.85 dBi at 5.2 GHz, 6.2 dBi at 8.3 GHz, 3.9 dBi at 9.5 GHz, 5.9 dBi at 12.2 GHz, and 4.7 dBi at 14.6 GHz. Meanwhile, the main lobe magnitude and the 3 dB angular beam width are 6.2 dBi and 86°, 5.9 dBi and 53.7°, 8.5 dBi and 43.9°, 8.6 dBi and 42.1°, and 4.7 dBi and 30.1°, respectively, at the resonant frequencies. The overall resonator has a compact dimension of 0.52 λ × 0.52 λ × 0.027 λ at the lower resonant frequency. For practical validation, a lab prototype was built on a 1.6 mm thick epoxide woven glass fabric dielectric material which is measured using a vector network analyzer and within an anechoic chamber. The comparison between the simulated and measured results showed a very good understanding, which implies the practical suitability of the proposed multiband resonator design.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2017
Publisher: IEEE
Date: 05-2012
Publisher: IEEE
Date: 05-2012
Publisher: MDPI AG
Date: 07-01-2013
DOI: 10.3390/MA6010143
Publisher: Institution of Engineering and Technology (IET)
Date: 2013
DOI: 10.1049/EL.2012.3957
Publisher: University of Queensland Library
Date: 2019
DOI: 10.14264/UQL.2019.69
Publisher: Science Publications
Date: 12-2011
Publisher: IEEE
Date: 07-2011
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2019
Location: Bangladesh
No related grants have been discovered for Md Shahidul Alam.