Infinite elements and base functions for rotationally symmetric electromagnetic waves
Abstract
The FEM is applicable to infinite domains if the outermost 'finite' elements are infinite and their base functions satisfy the boundary conditions at infinity. Appropriate infinite elements fitted to a triangular or quadratic finiteelement net and corresponding base functions satisfying Sommerfeld's radiation condition for EM waves are introduced. The application of the defined infinite elements is illustrated for the problem of the radiation of a coaxial cable to a halfspace. The results are in very good agreement with those found in the literature.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 October 1988
 DOI:
 10.1109/8.8639
 Bibcode:
 1988ITAP...36.1490P
 Keywords:

 Electromagnetic Radiation;
 Finite Element Method;
 Sommerfeld Waves;
 Infinity;
 Isoparametric Finite Elements;
 Magnetic Permeability;
 Permittivity;
 Communications and Radar