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Near Zone of Plane Disk with Uniform Transient Current Distribution

The near zone of a plane transient radiator is investigated in Time Domain. The problem is solved by Evolutionary Approach to transient electromagnetic problems converted to a set of Klein-Gordon Equations with definite initial and boundary conditions. The application of Riemann function approach permits to obtain the evolutionary coefficient in explicit form for Heaviside step function excitation case. To generalize the solution for the time dependence of the given current the superposition principle in form of Duhamel integral is used. The energy characteristics in the near zone of the radiator and the formation of electromagnetic wave are investigated.