Title :
Stable and efficient ABCs for graded mesh FDTD simulations
Author :
Lauer, A. ; Wolff, I.
Author_Institution :
Inst. of Mobile & Satellite Commun. Tech., Lintfort, Germany
Abstract :
Well known Absorbing Boundary Conditions show instabilities if used for graded mesh FDTD simulations of structures on high permittivity substrates. This paper proposes a PML like absorber which is unconditionally stable. Reflection factors of less than -70 dB have been achieved for coplanar waveguide termination.
Keywords :
coplanar waveguides; finite difference time-domain analysis; mesh generation; numerical stability; waveguide theory; ABC; PML; absorbing boundary condition; coplanar waveguide termination; graded mesh FDTD simulation; high permittivity substrate; perfectly matched layer; reflection factor; stability; Boundary conditions; Coplanar waveguides; Equivalent circuits; Finite difference methods; Magnetic analysis; Magnetic losses; Magnetic materials; Magnetic resonance; Stability analysis; Time domain analysis;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.705032
