An Analysis of Dispersive Material by CIP (Cubic-Interpolated Pseudo-Particle) scheme

In recent years, CIP (Cubic-Interpolated Pseudo- Particle) scheme is becoming popular, because, the method has great stability for very wide frequency range, therefore this method can analyze rectangular pulse propagation. On the other hand, a dispersive material is often analyzed, this reason is indicated as follows. Recently, the Metameterial techniques which are applied for quite small antenna and so on. DNG (Double NeGative) material is one of Metamaterials, the DNG material has negative permittivity and negative permeability, the DNG material indicates negative index of refraction. In the numerical analysis, the DNG material is often model as dispersive material. In this paper, we propose an analysis method of dispersive material by using CIP scheme. The effectiveness is confirmed by comparing with FDTD method.