Asian Journal of Engineering, Sciences and Technology - Volume 5, Issue 2 2015
By Sajid Yasin, Ikram E Khuda, Imran Nazir, and Muhammad Ghiayas Tahir
Keywords: Microstrip patch antenna, bandwidth, shape, fringing, numerical integration, surface charge density, cell size.
—In spite of many advantages, microstrip patch are affected by the disadvantage of low having low bandwidth. In addition to many other factors, that determine the bandwidth of these antennas, one important parameter is the shape of the patch.The idea suggested in this paper is relating the proper shape of microstrip patch antenna for higher bandwidth operations using the phenomenon of fringing on finite surface of patch and estimating its occurrence from numerical integration.For this purpose, surface charge density on metallic surfaces is taken under consideration. This is obtained by carrying out computations on a geometric sequence of cell sizes. The results are then employed on microstrip patch antenna to make conclusions about their bandwidth of operation.