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International Journal of Antennas and Propagation
Volume 2014, Article ID 613245, 9 pages
Research Article

A Novel Performance Analysis of the Microstrip Antenna Printed on a Cylindrical Body

1Department of Physics, King Abdulaziz University, Jeddah 21432, Saudi Arabia
2Department of Engineering Physics, Alexandria University, Alexandria 21544, Egypt
3Department of Electrical & Computer Engineering, King Abdulaziz University, Jeddah 21432, Saudi Arabia
4Department of Electrical Engineering, University of Business and Technology, Jeddah 21432, Saudi Arabia

Received 30 September 2014; Revised 22 November 2014; Accepted 23 November 2014; Published 11 December 2014

Academic Editor: Jaume Anguera

Copyright © 2014 Amr M. Mahros et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Performance of a circular patch microstrip antenna is highly affected by the effective dielectric constant of a used substrate material. When the circular patch is conformed on a cylindrical body, the effective dielectric constant is changing with curvature due to the changing in the fringing field. Consequently, some of antenna parameters such as resonance frequency, input impedance, voltage standing wave ratio, return loss, quality factor, and antenna bandwidth are functions of curvature. In this work, we study the effect of curvature on the performance of circular patch microstrip antenna. A mathematical model for the antenna parameters as functions of curvature is also introduced. The model is applied in case of using two substrates of different refractive index values. By extension, the antenna performance was studied through simulation by using method of moments (MoM) which is reliable in solving Maxwell’s integral equations in the frequency domain. The results from simulation compare very favorably with the described analytical results.