Optimization of Thick BoR Monopole Antennas Using Differential Evolution

Abstract

Two electrically thick body BoR monopole antennas are proposed with enhanced antennas gain performances. Both antennas are designed above infinite ground plane, fed with coaxial cable and to operate in frequency range from 0.3 GHz to 1.2 GHz. Voltage standing wave ratio and realized gain characteristics are observed and studied. The enhancement was obtained using optimization with Differential Evolution (DE) algorithm. Proposed antennas have better gain performances in comparison to reference conical cylindrical antenna. Results obtained for second antenna show improved impedance bandwidth performances in the upper part of frequency band in comparison to reference antenna.