Enhanced transmission phenomenon from the eigenoscillation point of view

Abstract

Eigenoscillations of corresponding waveguide and periodic open resonators have been studied for explanation of the enhanced transmission through irregularities with below-cutoff holes. It has been found that the origin of the discovered effects is in the existence of the eigenoscillations of the interface between the free halfspace and the metal halfspace perforated with double-periodic set of channels or the eigenoscillations of waveguide plane junction.