Modeling of electromagnetic behavior of composite thin layers using genetic algorithm

In this paper, we present a new model using the high frequency electromagnetic simulator for several binary mixtures where the load is in the lossless thin film form with a permittivity of (ϵ = 100, 200, 300, and 400) and for various thickness values in a range of 10 μm to 250 μm with respect to the host matrix. The model operates in a variety of frequencies from 8.2 GHz to 12.4 GHz. The effective permittivity of composites is evaluated using Nicholson Ross Weir (NRW) algorithm in a rectangular waveguide. The implementation of NRW algorithm is conducted on various samples simulated by HFSS, in order to estimate the dielectric composite behavior. Furthermore, we employ a genetic algorithm methodology (GA) for the filling factor optimization of the proposed model by Mosallaei. The obtained results show a good agreement with the theoretical models, which ensure the validity of our proposed model for characterizing the electromagnetic behaviour of dielectric thin films.