摘要:

An accurate numerical-analytical method of solution of the problem of wave diffraction by a perfectly conductive cylindrical body with a cross-section formed by crossing of the “key” elements (such as flat strips and cylindrical screens) is proposed. It is based on the ideas of the moment method and the partial inversion technique of the initial problem operator. For this problem, Gegenbauer polynomials form a complete orthogonal system of the basic functions. As a result, the initial problem is reduced to the solving of infinite systems of linear algebraic equations.

ISSN:0272-6343    

DOI:10.1080/02726349308908357

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The problem of scalar wave scattering from a thin spherical segment is posed in Neumann's formulation and reduced by means of the rigorous method solution to infinite system of linear algebraic equations (SLAE).

ISSN:0272-6343    

DOI:10.1080/02726349308908358

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

A mathematically rigorous solution is obtained for the diffraction problem of electromagnetic waves on an axially symmetric system of two infinitely thin perfectly conducting spherical caps. This screen configuration is a model of both open resonators with spherical mirrors and two mirror spherical antennas.

ISSN:0272-6343    

DOI:10.1080/02726349308908359

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The method of electrodynamic averaging is described, by which one can obtain the effective dielectric permittivity of volume anisotropic structure determined by the shape of particles, their geometrical sizes, electromagnetic parameters and spatial dense media, to consider multiple interactions between scattering elements and dispersion properties of the media. Tensors of the dielectric permittivity of anisotropic structures are given as the dielectric permittivity of media which sizes and electromagnetic parameters are fluctuating near the average values. The known formulae of dielectric mixing theory are derived from the obtained results in a numbers of cases.

ISSN:0272-6343    

DOI:10.1080/02726349308908360

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

The paper deals with the results of investigations of a new highstable source of electromagnetic oscillations of the EHF range, namely, a diffraction radiation generator (DRG). Its operating principle is based on using the effect of diffraction radiation (Smith-Parcel effect). Technical specification of the DRG and examples of their application in radisystems are given.

ISSN:0272-6343    

DOI:10.1080/02726349308908361

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor

摘要:

Results of experimental research of wave modes “coupling” excited by electron flow in open resonator of diffraction generator are presented. With due regard for the concept of Morse critical point the conditions resulting in working wave modes forking and coupling following are visually demonstrated.

ISSN:0272-6343    

DOI:10.1080/02726349308908362

出版商:Taylor & Francis Group    

年代:1993

数据来源: Taylor