An Antenna Design Technique Based on Differential Evolution Algorithm Using An Objective Function Designed with Finite Element Method Simulations

An optimization mechanism that exploits the finite element method simulations of COMSOL multiphysics and differential evolution (DE) algorithms is proposed to design antennas. The method introduced in this paper utilizes the built-in programming feature of COMSOL application builder. The cost function for the iterative DE algorithm is developed on the basis of finite element method simulations capabilities of the COMSOL software. This provides very flexible and realistic design opportunities. In order to validate the proposed optimization system, two different examples of a monopole Yagi-U da antenna are considered. The first example has two elements including a reflector. The second example has three elements including a director as well as a reflector. The proposed optimization mechanism is used to find optimal geometric values for two monopole Yagi-Uda antennas. At the end of optimizations, it is seen that the proposed mechanism in this paper can successfully achieve the optimal geometric solutions for the desired antenna parameters.