Simulated Transient Radiation Characteristics of Optimized Ultra Wideband Printed Dipole Antennas

In case of particular ultra wideband applications (i.e. radar, positioning, etc.), it is crucial to know the transient responses of antennas. This paper picks up the threads of the previous work, where the optimization process searches for the dipole shape, which accomplishes two required parameters - good matching and minimal distortion. The particle swarm optimization method was used in the process of dipole shape optimization. As a result, the optimized ultra wideband dipole is perfectly matched and minimally distorts the applied signal. The main part of the paper presents the transient radiation characteristics of optimized dipoles with common dipole element shape, such as the ideal dipole, dipole with balun transformer and monopole with planar ground plane.