Multicriteria Optimization of Antennas in Time-Domain

Abstract

An original approach to the time-domain multicriteria optimization of antennas is presented. For a given excitation pulse, the time-domain objective function takes the “time-domain impedance matching”, distortion of responses at the feeding point and in a desired radiating direction (with respect to the excitation pulse), and the radiated energy in the desired direction into account. The objective function is tested on the optimization of a bow-tie antenna using the particle swarm optimization. The proposed approach is suitable for the design of broadband antennas.

Keywords

• Multicriteria optimization
• particle swarm optimization (PSO)
• time domain integral equation (TDIE)