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Abstract Microstrip antennas consist of a patch of metallization on a grounded substrate. These arc low profile, lightweight antennas, most suitable for aerospace and mobile applications. Because of their low power handling capability, these antennas can be used in low power transmitting and receiving applications. Many of the antenna applications for satellite links, mobile communications, wireless local area networks, and so on, impose constraints on compactness, dual- . frequency operation, frequency agility, polarization control, radiation pattern control, and so on. These functions can be achieved by suitable loading simple microstrip antennas, and hence these antennas are becoming more commonly used. The microstrip antenna structure is becoming complex due to the inherent inhomogcncity of the dielectric materials used. The analysis of complex microstrip antennas using full wave techniques, such as the integral equation approach and FDTD, has matured sufficiently, and software that can be run on personal computers is freely available. 1 . The thesis is aimed at those who would like to do three- dimensional electromagnetic simulation using the finite- difference time- domain (FDTD) method • in a reasonable amount of time. The FDTD programs written in the C programming language. There is more than one program, typically only the first will be a complete program listing. The subsequent programs will not be complete, but will only show changes as compared to the first program. |