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All Journal International Journal of Electrical and Computer Engineering Indonesian Journal of English Teaching
Ullah, Ubaid
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Computer Science & IT Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Other

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A nested square-shape dielectric resonator for microwave band antenna applications Ullah, Ubaid; Mabrouk, Ismail Ben; Al-Hasan, Muath; Nedil, Mourad; Ain, Mohd Fadzil
International Journal of Electrical and Computer Engineering (IJECE) Vol 11, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v11i1.pp481-488

Abstract

In this paper, a nested square-shape dielectric resonator (NSDR) has been designed and investigated for antenna applications in the microwave band. A solid square dielectric resonator (SSDR) was modified systematically by introducing air-gap in the azimuth (ϕ-direction). By retaining the square shape of the dielectric resonator (DR), the well-known analysis tools can be applied to evaluate the performance of the NSDR. To validate the performance of the proposed NSDR in antenna applications, theoretical, simulation, and experimental analysis of the subject has been performed. A simple microstrip-line feeding source printed on the top of Rogers RO4003 grounded substrate was utilized without any external matching network. Unlike solid square DR, the proposed NSDR considerably improves the impedance bandwidth. The proposed antenna has been prototyped and experimentally validated. The antenna operates in the range of 12.34GHz to 21.7GHz which corresponds to 56% percentage bandwidth with peak realized gain 6.5dB. The antenna has stable radiation characteristics in the broadside direction. A close agreement between simulation and experimental results confirms the improved performance of NSDR in antenna applications.
Anthropological Knowledge as Universal: A Critical Analysis of Fahrenheit 451. Ullah, Ubaid; Bukhari, Syeda Muqaddas Hameed
IJET (Indonesian Journal of English Teaching) Vol. 13 No. 2 (2024): December
Publisher : Department of English Language Education, UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/ijet2.2024.13.2.168-183

Abstract

The current research is a critical study of Bradbury's "Fahrenheit 451" and has attempted to explain how epistemology has been made conflicting and controversial, leading to the idea of implementation of universal anthropological knowledge. It is the knowledge about human races and their collective interests and benefits. Advancing anthropological knowledge is a need of the day because a majority of the world's problems are due to books. The researcher explained that universal human knowledge will build trust, tolerance, and acceptance on the part of individuals and scholars from every culture and society around the globe. The perspective of "Ethnoepistemology" has been used as a theoretical framework in guiding and providing context to the study. "Ethnoepistemology" also decentralized the concept of one dominant center in the field of knowledge i.e. “The West knowledge”. Having a qualitative and epistemological nature, the research used "Close Reading" as a method of data analysis to highlight the hidden meanings and concepts. The study concluded that the implementing and considering anthropological knowledge as universal will regain the declined scope of academia as it is universal.
Co-Authors Ain, Mohd Fadzil Al-Hasan, Muath Bukhari, Syeda Muqaddas Hameed Mabrouk, Ismail Ben Nedil, Mourad