Novel Approach to Ultra-Wideband Antenna Design

A novel approach to ultra-wideband (uwb) antenna design is presented which is based on a generaldescription for the geometry of monopole antennas. this general description is capable of producing almost allpossible shapes for monopole antennas and it is compatible with different optimization methods. the generaldescription is used for the optimization of rotationally-symmetric monopole antenna with finite ground plane. theoptimization of antennas is performed by applying a hybrid procedure, which begins with a global search andcompletes with a local optimization. the optimization procedure aims at minimizing the reflection from antennaswhile reducing the distortion of radiated pulses. in some cases, the reduction of variations in the energy pattern is alsoconsidered. the numerical results show the reliability and effectiveness of the whole process and considerableimprovement in comparison with similar antennas reported in the literature.