%0 Journal Article %A Perov, Andrei Olegovich %A Kirilenko, A. A. %A Senkevich, S. L. %D 2013 %I Begell House %K one-dimensionally periodic structures, compound grating, resonance scattering, natural oscillations %N 16 %P 1453-1468 %R 10.1615/TelecomRadEng.v72.i16.10 %T EIGENMODES AND RESONANCE PROPERTIES OF ONE-DIMENSIONALLY PERIODIC METALLIC BAR GRATINGS. PART 2: COMPOUND GRATING %U https://www.dl.begellhouse.com/journals/0632a9d54950b268,647639a91fc4068f,08f037127e3f8792.html %V 72 %X The interest shown today toward resonance properties of perforated metal gratings has been renewed owing to the investigation, interpretation and possible practical application of the effect known as the "enhanced transmission phenomena". Based on the works of the V. Shestopalov school, the present paper is aimed at analyzing properties of one-dimensionally periodic gratings, i.e., at investigating eigenmode spectra and principles of their formation which are determined in particular by the structure of the grating period, and then at analyzing the influence of these spectra on the resonance characteristics. The effects arising in the case of scattering of an H-polarized plane wave by a one-dimensionally periodic compound metallic bar grating are considered in the study. The lower-order eigenoscillations of the multielement structures of the kind which are responsible for the resonance behavior in the case of introduction of various regular faults in the geometry of the microperiodic cell are investigated. The relation between the scattering characteristic features and spectra of the compound gratings with various structures of the period is established. Based on these results, an estimate is presented for the number of resonances in dependence on the grating topology and geometry, and a novel interpretation is suggested for the "phase" resonances. The resonance behavior of the grating is described in terms of the unified spectral theory, which makes it possible not only to establish the interrelation between different resonance effects but also to determine the source of such a behavior conditioned by excitation of certain eigenmodes. %8 2013-08-23