Abstract
A sinusoidally edge-modulated microstrip patch antenna has been analysed using the modal expansion cavity model. The investigations have been carried out to explore the input impedance, bandwidth and radiation efficiency of the modulated structure against its physical parameters like the modulation depth and periodicity. The simulated results clearly show that the bandwidth increases with modulation depth under certain conditions of excitation. The analysis further shows that the modulated structure provides a lot of flexibility in matching the antenna to the standard feeder lines. Experimental results tally satisfactorily with the theoretical data.
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Notes on contributors
D N Khanra
D N Khanra, MSc, PhD was bom in 1951 the District of Midnapore, West Bengal. He received the Post Graduate degree in Physics from Calcutta University in 1976 and the PhD degree from Jadavpur University in 1995.
At present he is working as a Reader in Physics at V S Mahavidyalaya, Manikpara, Midnapore.
His area of research interest is Microwaves and Microstrip Antennas.
A K Mallick
A K Mallick, BEE (Hons), MTech, PhD was graduated from the Jadavpur University, Calcutta, and received his postgraduate and doctoral degrees from the Indian Institute of Technology, Kharagpur. He is, formally, an Electrical Engineer with specialization in Microwave and Lightwave Engineering.
Dr Mallick served the All India Radio (AIR), Calcutta as an Assistant Engineer for four years (1962–65) and joined the Department of Electronics and Electrical Communication Engineering of the Indian Institute of Technology, Kharagpur in the year 1967 as a Lecturer. At present, he is a Professor of the same Department. He was the Head and Professor of the Radar and Communication Center of the Institute from 1984 to 1989. In his credit, there are a number of superior quality research papers published in national and international journals of repute.
His principal research interest is in the areas which include Electrostatics, Electromagnetics, Microwaves, Millimeterwaves and Lightwave Engineering. At present, he is actively engaged in the area of Microstrip Antennas, EMI/EMC, and Fault Diagnosis of Phased Array Antennas.
Dr Mallick is a Fellow Member of the Institution of Engineers (India), and a Life Member of the Society of EMC Engineers (India).