title: EVOLUTION OF TRANSIENT ELECTROMAGNETIC FIELDS IN RADIALLY INHOMOGENEOUS NONSTATIONARY MEDIUM
abstract: To solve radiation problems in time domain directly the modal representation of transient electromagnetic fields is considered. Using evolutionary approach the initial nonstationary threedimensional electrodynamic problem is transformed into the problem for one-dimensional evolutionary equations by the construction of the modal basis for electromagnetic fields with arbitrary time dependence in spherical coordinate system. Elimination of the radial components of electrical and magnetic field from
journal: Electromagnetic waves