The Comprehensive Program for Analytical Scattering Solutions for Electromagnetics (COMPASS-EM) is a Fortran program developed at The University of Texas at Austin for finding the electromagnetic fields scattered and power absorbed by an isotropic multi-layered magneto-dielectric sphere. The sphere is excited by either an arbitrarily polarized time-harmonic plane-wave incident from an arbitrary direction or an arbitrarily oriented time-harmonic infinitesimal electric/magnetic dipole located at an arbitrary position.

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