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Zarimin Zaharudin
International Islamic University Malaysia

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Resonant Configuration Topology Exploration for Inductive Link Power Transfer S. Hafiz; Zarimin Zaharudin; Sheroz Khan; Nur Shahida Binti Midi; John Tan Teng Hwang; Kushsairy Abdul Kadir; Jawad Ali Shah
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp522-530

Abstract

This paper investigates the performance of circuit topology used in wireless power applications to optimize the level of maximum efficiency. We analyse the series and the parallel resonant topologies for use in an inductive coupling link to derive power transfer efficiency expressions verified using MATLAB. We look into the two topologies into the link under resonant conditions for selectively supplying the device with power. The results are obtained analytically which are verified subsequently by MATLAB simulation. We then analyse the links to see how maximum power transfer efficiency for a given pair of coils can be achieved. The topology at a given tuning frequency is used for powering a selected resistive load. The method is presented using a given pair of coils simulated and the results agree well with the theoretical explanation and derivations.
Recognition of Metal Objects inside Wall using Antipodal Vivaldi Antenna Faraz Ahmed Shaikh; Sheroz Khan; Zarimin Zaharudin; AHM Zahirul Alam; Farah Diyana Bt. Abdul Rahman; Khairayu Bt. Badron; Dominique Baillargeat; Mashkuri Bin Yaacob; Zeeshan Shahid
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 1: July 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i1.pp27-35

Abstract

This paper present a recognition technique of metal placed inside and between two walls. A unique scheme of recognition of metallic objects through Ultra Wide Band (UWB) Modified Antipodal Vivaldi Antenna (MAVA) frequency range of (3.1GHz to 10.6 GHz) is presented in this paper.The working mechanism of detection system based on Time Domain Reflectrometry (TDR) using through wall imaging (TWMI). A very small duration pulses generated by Vector Network Analyzer (VNA) which are used for illuminate the wall.The analysis of a system under UWB antenna probe array. The simulation results of MAVA have given an enormous potential of penetration, in order to recognize concealed metal objects with fine precision, proving a smart development in the detection system technology. The improvement of resolution in an image, special filters have been developed and implemented. The design and optimization progression is conceded out via CST simulation software for parametric performance assessment of return loss, radiation pattern and directivity.
Co-Authors AHM Zahirul Alam Dominique Baillargeat Farah Diyana Bt. Abdul Rahman Faraz Ahmed Shaikh Jawad Ali Shah John Tan Teng Hwang Khairayu Bt. Badron Kushsairy Abdul Kadir Mashkuri Bin Yaacob Nur Shahida Binti Midi S. Hafiz Sheroz Khan Zeeshan Shahid