Augmentted electric and magneticfield integral equations
Abstract
Augmented electric and magneticfield integral equations, which preserve the basic simplicity, solution capability, and pure electric and magneticfield character of the original integral equations, are introduced to eliminate the spurious resonances from the exterior solution of the original integral equations. The exact dependence of the original and augmented integral equations on the geometry of the principal area (self patch) which excludes the singularity of their kernels is also determined; and alternate forms for the integral equations are provided that avoid integrals dependent upon the geometry of the principal area. Numerical results obtained for scattering from the perfectly conducting cube, sphere, and infinite circular cylinder confirm the theoretically predicted result that the augmented integral equations eliminate the spurious resonances for all perfectly conducting scatterers except the sphere.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 March 1981
 Bibcode:
 1981STIN...8133386Y
 Keywords:

 Electric Fields;
 Integral Equations;
 Magnetic Fields;
 Bodies Of Revolution;
 Kernel Functions;
 Maxwell Equation;
 Communications and Radar