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Abstract Microslrip a/Hennas consist of a patch of metalization on a grounded substrate. These are low profile, lightweighted antennas, most suitable for satellite and mobile applications. Because of their low-power handling capability. these antennas can be used in low-power transmitting and receiving applications. Microstrip antennas have matured considerably during the past 25 years, and many of their limitations have been overcome. The characteristics of microstrip antennas’ can be improved by making slots in the ground plane. So, bandwidths of about 65% have been achieved. Analysis of of microstrip antennas using integral equation apprllach as the method of moments. MoM, has matured sufficiently. and sotiware that can be run on personal computers is freely available from the Internet. The thesis aims to increase the bandwidth of the microstrip antennas to overcome one of their serious limitations. So. modifications will be done by making different shapes of slots in the ground plane and by changing the shape of the metallic patches. |