Time-domain electromagnetic fields in a cavity with temporally dispersive dielectric

The problem of electromagnetic field In the cavity filled with homogeneous dispersive lossy medium Is considered within the frames ofthe evolutionary approach which Involves the principle of causality [4,5]. The closed-form solution to the problem is obtained regarding constitutive relations for homogeneous dispersive lossy medium expressed in the form of differential equations. Forced oscillations in a cavity with perfectly conducting singly-connected close surface (S) of arbitrary shape are studied for the excitation by nnlte duration harmonic signal.