Title :
Staircasing errors in FDTD at an air-dielectric interface
Author :
Akyurtlu, A. ; Werner, D.H. ; Veremey, V. ; Steich, D.J. ; Aydin, K.
Author_Institution :
Pennsylvania State Univ., University Park, PA, USA
fDate :
11/1/1999 12:00:00 AM
Abstract :
An analytical expression is derived for the reflection coefficient of a staircased air/dielectric interface. This expression for the reflection coefficient is then used to determine the attenuation and propagation constants of the wave induced by staircasing. It is demonstrated here that the errors due to staircasing increase as the relative dielectric permittivity is increased and converges to the results for an air-PEC interface
Keywords :
electromagnetic wave scattering; finite difference time-domain analysis; permittivity; EM scattering; FDTD; air-dielectric interface; attenuation constants; propagation constants; reflection coefficient; relative dielectric permittivity; staircasing errors; Dielectric losses; Finite difference methods; Geometry; Magnetic fields; Maxwell equations; Permittivity; Propagation constant; Reflection; Surface treatment; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
