Effect of Feed Location on Rectangular Microstrip Antenna at TM/sub 11/ Mode

P. Paul; J. S. Roy; S. K. Chowdhury

doi:10.14429/dsj.46.4059

P. Paul Jadavpur University, Calcutta
J. S. Roy Jadavpur University, Calcutta
S. K. Chowdhury Jadavpur University, Calcutta

DOI: https://doi.org/10.14429/dsj.46.4059

Keywords: Conical radiation patterns, Gain microstrip antennas, Patch antenna

Abstract

The variation of 2:1 VSWR impedance band width with the change of feed location, at TM/sub 11/ mode excitation is studied experimentally. Experimental investigations revealed that the 2:1 VSWR impedance band width of a rectangular microstrip patch antenna at TM/sub 11/ mode could be improved by properly choosing the location of the feed point along one of the radiating edges; and this is verified theoretically. This investigation may be useful for low gain microstrip antennas with conical radiation patterns.

Author Biographies

P. Paul, Jadavpur University, Calcutta

Mr P Paul is la researcher in the Department of Electronics & Telecommunication Engineering, Jadavpur University. He obtained his MSc in Physics from Gauhati University, Assam. Presently, he is working towards his PhD on microstrip antennas.

J. S. Roy, Jadavpur University, Calcutta

Dr JS Roy is a Research Associate ofCSIR in the Department of Electronics,& Telecommunication Engineering, Jadavpur University. Earlier, he obtained his MSc in Physics from Burdwan University and PhD from Jadavpur University. He was post-doctoral iesearcher and CNRS Research Associate in IRCOM, University of Limoges, France, during 1990-93. His research interests include microstrip antennas for mobile communications and, microstrip lines and components.

S. K. Chowdhury, Jadavpur University, Calcutta

Prof SK Chowdhury obtained his jBE (TeIE), ME (TeIE) and 'PhD (Engg) from Jadavpur University in 1964, 1968 and 1972, respectively. He joined the Department of Electronics & Telecommunication Engineering in 1969 as a Lecturer. He has to his credit about 50 publications
published in national and international journals. He is senior !nember of IEIE. USA and fellow, IE, India. His current research interests include engineering education, Electromagnetics and microwaves in gcncrfll and microstrip antennas and components in particular.