Title :
A new finite element formulation for RF scattering by complex bodies of revolution
Author :
Khebir, A. ; D´Angelo, J. ; Joseph, J.
Author_Institution :
General Electric Corp. Res. & Dev., Schenectady, NY, USA
fDate :
5/1/1993 12:00:00 AM
Abstract :
A formulation for and results of solving electromagnetic scattering from complex inhomogeneous axisymmetric bodies are presented. The approach presented uses the finite element method in the frequency domain. A node-based approach is used to solve for the three components of the electric or magnetic field. The finite element mesh is truncated using a three-dimensional vector absorbing boundary condition based on the Wilcox expansion theorem. A harmonic expansion of the near-field solution obtained from the finite element solution is used to compute the far fields and radar cross section
Keywords :
boundary-value problems; electromagnetic wave scattering; finite element analysis; frequency-domain analysis; radar cross-sections; RF scattering; Wilcox expansion theorem; complex bodies of revolution; electric field; electromagnetic scattering; far fields; finite element formulation; finite element mesh; frequency domain; harmonic expansion; inhomogeneous axisymmetric bodies; magnetic field; near-field solution; node-based approach; radar cross section; three-dimensional vector absorbing boundary condition; Boundary conditions; Coatings; Conducting materials; Dielectric losses; Finite element methods; Helium; Magnetic fields; Magnetic materials; Radar scattering; Radio frequency;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
