Title :
Numerical examination on effective permittivity of periodic structure by the FDTD method
Author :
Matsumoto, Kaname ; Yokota, Masao
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Miyazaki, Miyazaki, Japan
Abstract :
The effective permittivity of the one-dimensional periodic structure is examined using the reflectance and transmissivity obtained by the FDTD method. By using the reflectance and transmissivity by the FDTD method, the effective permittivity of the dielectric slab, which has the same reflectance and transmissivity with that of periodic structure, is obtained by using the transcendental equation. Also, the effective permittivity is calculated by Rytov approximation, and the range of application and the validity of the effective permittivity are shown by comparing the Rytov approximation with the approximation obtained by the FDTD method.
Keywords :
approximation theory; finite difference time-domain analysis; periodic structures; permittivity; FDTD method; Rytov approximation; dielectric slab permittivity; numerical examination; one-dimensional periodic structure; reflectance; transcendental equation; transmissivity; Approximation methods; Dielectrics; Electromagnetics; Finite difference methods; Periodic structures; Permittivity; Slabs;
Conference_Titel :
Electromagnetic Theory (EMTS), Proceedings of 2013 URSI International Symposium on
Conference_Location :
Hiroshima
Print_ISBN :
978-1-4673-4939-0
