Title :
A simple and efficient implementation of CFS-PML in the FDTD analysis of periodic structures
Author :
Correia, Davi ; Jin, Jian-Ming
Author_Institution :
Center for Comput. Electromagn., Univ. of Illinois, Urbana, IL, USA
fDate :
7/1/2005 12:00:00 AM
Abstract :
The use of perfectly matched layers (PMLs) is one of the most popular techniques employed for mesh truncation in finite-difference time-domain (FDTD) simulations. Its original form, however, has a poor absorption of evanescent waves, which are highly present in simulations of periodic structures. A better absorption has been achieved using a complex frequency shifted (CFS) PML, which has been implemented via a convolution scheme. In this letter, we present a simple and efficient implementation of the CFS PML and apply it to periodic structures.
Keywords :
electromagnetic wave absorption; finite difference time-domain analysis; periodic structures; CFS-PML; FDTD analysis; Floquet modes; complex frequency shifted PML; convolution scheme; evanescent wave absorption; finite-difference time-domain; mesh truncation; perfectly matched layers; periodic structures; Absorption; Analytical models; Attenuation; Convolution; Finite difference methods; Frequency; Maxwell equations; Perfectly matched layers; Periodic structures; Time domain analysis; Complex frequency shifted (CFS); Floquet modes; evanescent waves; finite-difference time-domain (FDTD); perfectly matched layer (PML); periodic structures;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.851583
