Scattering characteristics of structures of lossy metamaterial - semiconductor cylinders

Abstract

Here we present for the first time the rigorous boundary problem solution of the Maxwell's equations for the determination of scattering characteristics of a structure. The structure consists of a finite set of infinite parallel circular cylinders that can be made of different lossy isotropic materials. We numerically analyzed two structures that differ only in the symmetrical arrangement of semiconductor cylinder in relation to a central metamaterial cylinder. The electrical radii of cylinders can be arbitrary. Both polarizations of the incident microwave are considered in this work. The Pointing vector of the plane microwave that reflected from and transmitted through the structures analyzed here. We investigated dependency on the radius of an arc where are placed the semiconductor cylinder, the semiconductor specific resistivity, the operating frequency at two radii of the metamaterial cylinder. We discovered that the structure can have features of a bandgap photonic crystal dependent on the topology and the polarization of the incident microwave. We have found that the structure can operate as a microwave reflector at the certain radius of the arc on which are located thirteen n-Si cylinders. The Pointing vector is very sensitive to the value of semiconductor specific resistivity when the incident microwave is the parallel polarized.