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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009

Выпуски:
Том 78, 2019 Том 77, 2018 Том 76, 2017 Том 75, 2016 Том 74, 2015 Том 73, 2014 Том 72, 2013 Том 71, 2012 Том 70, 2011 Том 69, 2010 Том 68, 2009 Том 67, 2008 Том 66, 2007 Том 65, 2006 Том 64, 2005 Том 63, 2005 Том 62, 2004 Том 61, 2004 Том 60, 2003 Том 59, 2003 Том 58, 2002 Том 57, 2002 Том 56, 2001 Том 55, 2001 Том 54, 2000 Том 53, 1999 Том 52, 1998 Том 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v54.i5-6.30
pages 28-50

The Thin Dielectric Coating of the Smooth Metallic Cylinder High-frequency Excitation by the E-polarized Field of the Point Source

Victor Filippovich Apel'tsin
Senior Researcher of Department CMC at MGU, Russia

Краткое описание

A thin dielectric layer of variable thickness covering a perfectly conducting cylinder of sufficiently arbitrary cross-section is excited by the E-polarized wave of the point source. The solution is constructed approximately with the help of the projection method which generalizes the Sommerfeld approach. The radial parts of the singular eigensolutions of the Helmholtz equation are the cylindrical functions satisfying the boundary condition via the complex indexes depending on the angular coordinate are used as the basis functions. In high-frequency case for the boundary small distorted with respect to the circle the Infinite Ordinary Differential Equations system (ODEs) may be reduced to the independent diagonal equations solved explicitly using the WKB approximation for the unknown functions of angular coordinate. The approximate solution is represented as the generalized Watson series. Such a form of the approximate solution enables us to construct high-frequency asymptotic representations of the field in the illuminated and shadow domains corresponding to the generalized ray picture These representations in their invariant form provide the asymptotic solution of the Keller type and permit to obtain the simple algorithms of the coating parameters calculation in order to minimize the back-scattering.


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