Enhancement of Air-ground Matching by Means of a Chirped Multilayer Structure: Electromagnetic Modeling with the Method of Single Expression

Abstract

The enhancement of air-ground electromagnetic matching by means of a chirped multilayer structure is investigated. The modeling and simulation of the considered structure are performed by using the method of single expression (MSE), which is a convenient and accurate tool for wavelength-scale simulations of multilayers comprising lossy, amplifying or nonlinear (Kerr-type) materials. Numerical results show that a suitable chirped multilayer structure can reduce the reflection from the ground. Different values of the number of layers and of the layer thicknesses are considered. The distributions of the electric field components and the power flow density within the modelled structures are calculated.