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Title The Diffraction of Electromagnetic Waves on the Periodic Heterogeneities and Its Use for Realization of Practical Technical and Electronic Devices of Millimeter and Submillimeter Wavelength Range
Authors Vorobiov, Hennadii Saveliiovych
Vietzorreck, L.
Barsuk, Ivan Volodymyrovych
Rybalko, Oleksandr Oleksandrovych
Keywords diffraction gratings
submillimeter wavelength range
millimeter wavelength range
Type Article
Date of Issue 2012
URI http://essuir.sumdu.edu.ua/handle/123456789/34263
Publisher Published by InTech
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Citation The Diffraction of Electromagnetic Waves on the Periodic Heterogeneities and Its Use for Realization of Practical Technical and Electronic Devices of Millimeter and Submillimeter Wavelength Range [Текст] / H.V. Vorobiov, L. Vietzorreck, I.V. Barsuk, O.O. Rybalko // Solutions and Applications of Scattering, Propagation, Radiation and Emission of Electromagnetic Waves. — 2012. — Chapter 8. — P. 209-231.
Abstract Among the open structures, which are used in millimeter and submillimeter (MSM) wave engineering, diffraction gratings (DG) made in different modifications (periodic metal and metal-dielectric structures (MDS)) are of primary importance along with open cavities and open waveguides. Such systems are basic in the design of electromagnetic oscillation sources and electronic components of different instrumentation of such wavelength range. If there is a diffraction of electromagnetic fields by DG, “two-act” wave transformation usually takes place. When homogeneous plane wave falls on the plane one-dimensionally periodic grating, scattered field can be considered as a spectrum of homo- and heterogeneous plane waves. In this case body (incident) plane wave is transformed into body (scattered) homogeneous plane and heterogeneous (surface) waves and, thus, “two-act” transformation occurs. This type of the boundary-value problems has been thoroughly studied in the work and partly realized in the experiment. In addition, processes of surface wave transformation of distributed sources into body waves by periodic heterogeneities are of special interest. Such phenomenon can be watched when an electron beam (EB) moves uniformly near the metal DG or periodic MDS. In this case self-surface field of the EB is scattered by DG and at least one of its harmonics is transformed into body wave of the diffraction radiation or Cherenkov radiation. It should be noted, that transformation of the surface wave of EB by DG into the diffraction radiation is also an example of the “two-act” diffraction process. In addition, phenomena, connected with the transformation of DG of the surface waves of a dielectric waveguide (DW), play a great role in MSM engineering. In this case surface waves of a DW are transformed by the DG into surface waves of the DW or into body waves separated from them. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34263
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