Quasistatic electric and magneticfield penetration of a spherical shield through a circular aperture
Abstract
Canonical problems of quasistatic electromagnetic aperture penetration of a spherical conducting shield are addressed. Solutions of solved problems are reviewed, and solutions of heretofore unsolved problems are presented. Some relationships which exist among these problems are pointed out. The penetration of the shielded region is measured by the ratio of the field at the center of the shell to the external applied uniform field. It is shown that these ratios are the same for an applied electric field parallel to the axis when the shell is uncharged and for an applied magnetic field perpendicular to the axis. A new approach to the solution of a certain class of dual series equations is found and applied to the solution of one of the canonical problems.
 Publication:

IEEE Transactions on Electromagnetic Compatibility
 Pub Date:
 February 1985
 Bibcode:
 1985ITElC..27...13C
 Keywords:

 Apertures;
 Boundary Value Problems;
 Electromagnetic Shielding;
 Electrostatics;
 Magnetostatics;
 Spherical Shells;
 Canonical Forms;
 Dipole Moments;
 Electric Conductors;
 Electric Fields;
 Magnetic Fields;
 Series (Mathematics);
 Electronics and Electrical Engineering