Transient radiation of impulse current of complex spatial distribution
Abstract
The problem of radiation of impulse current of a complex spatial distribution which is approximated by a finite set of dipoles is considered. Three versions of flat radiators that approximate the curvilinear current with different level of accuracy are investigated. These problems are solved using the vector potential method in time domain that allows to get all vector components of the radiated field. The obtained results are compared with the classical ones for the single Hertz dipole excited by a current with an arbitrary time dependence. The processes of electromagnetic field transformation near the radiator and in its wave zone are analyzed. The criterion of the boundary of a wave zone for a given type of radiators is discussed.
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