Engineering and Technology Journal

Abstract

The design of an efficient and directive small size antenna, for modern wireless
applications, is a major challenge. This paper introduces the design and simulation of
new method to enhance the gain and side lobe reduction that improve the performance of
a conventional microstrip patch antenna. In this work three models were discussed and
analyzed. The first model consists of a reference patch antenna plus superstrate-1 of
different thickness. Modification of this model by adding square copper ring represents
the second model. In the third model a second superstrate on the top of the square copper
ring was added. Simulation results illustrate that the first model gives a small
enhancement for the gain and side lobe reduction, only gain enhancement was obtained in
the second model and greater enhancement was achieved for the performance of the
patch antenna in the third model.