Title :
Scattering from a cavity-backed slit in a ground plant-TE case
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
10/1/1990 12:00:00 AM
Abstract :
Two-dimensional transverse electric wave scattering from a cavity-backed slit in a ground plane is analyzed by R.F. Harrington and J.R. Mautz´s (1976) generalized network formulation. The admittance matrix of the cavity or arbitrary shape and medium is obtained by the finite-element method. A variational equation for the cavity problem is established and then discretized to a matrix equation. An efficient algorithm using the modified frontal-solution algorithm is developed to solve the matrix equation. The solution is manipulated to get the admittance matrix of the cavity. The computed admittance matrix is added to the radiation admittance matrix of the equivalent magnetic current on a ground plane and is used to solve for the equivalent magnetic current on the slit. Numerical results for trapezoidal and coated rectangular cavities are included
Keywords :
electric admittance; electromagnetic wave scattering; finite element analysis; matrix algebra; variational techniques; 2D TE wave scattering; admittance matrix; cavity-backed slit; coated rectangular cavities; equivalent magnetic current; finite-element method; ground plane; matrix equation; modified frontal-solution algorithm; transverse electric wave scattering; trapezoidal cavities; variational equation; Admittance; Apertures; Computer aided software engineering; Equations; Finite difference methods; Finite element methods; Frequency domain analysis; Intelligent networks; Scattering; Tellurium;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
