Title :
High order surface impedance boundary conditions for the FDTD method
Author :
Farahat, Nader ; Yuferev, Sergey ; Ida, Nathan
Author_Institution :
Akron Univ., OH, USA
fDate :
9/1/2001 12:00:00 AM
Abstract :
Surface impedance boundary conditions (SIBC) of high order of approximation are implemented for a 2-D FDTD formulation. The original FDTD equations for the boundary cell are represented in the series of equations similar in the left hand side. This approach takes into account the curvature of the body surface and tangential variation of the fields along the surface. It is shown that implementation of the high order SIBC does not cause new computational difficulties as compared to the well-known Leontovich´s impedance boundary conditions
Keywords :
electromagnetic field theory; finite difference time-domain analysis; perturbation techniques; 2D FDTD formulation; FDTD method; body surface curvature; boundary cell; high order boundary conditions; surface impedance boundary conditions; tangential variation; Boundary conditions; Conductivity; Dielectric losses; EMP radiation effects; Equations; Finite difference methods; Perturbation methods; Scattering; Surface impedance; Time domain analysis;
Journal_Title :
Magnetics, IEEE Transactions on
