发布求助
文献互助 智能选刊 最新文献

Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)最新文献

筛选
英文 中文
The method of surface integral in the theory of wave scattering 波散射理论中的表面积分法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890536
N. V. Bondarenko, N. Shul'ga
{"title":"The method of surface integral in the theory of wave scattering","authors":"N. V. Bondarenko, N. Shul'ga","doi":"10.1109/MMET.2000.890536","DOIUrl":"https://doi.org/10.1109/MMET.2000.890536","url":null,"abstract":"The scattering of fast charged particles and electromagnetic waves on a scatterer, localized in the space domain is considered. It is shown that the scattering amplitude can be expressed in this case as an integral over an arbitrary closed surface enclosing the scatterer. This representation enables us to express the scattering amplitude as an integral over impact parameters in general case and to develop a simple method for calculation corrections to the eikonal amplitude.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122430171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scattering of a plane electromagnetic wave by a metal-dielectric composite cylinder 平面电磁波在金属-介电复合圆柱体中的散射
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890469
A. Y. Shepilko, Y. Shepilko
{"title":"Scattering of a plane electromagnetic wave by a metal-dielectric composite cylinder","authors":"A. Y. Shepilko, Y. Shepilko","doi":"10.1109/MMET.2000.890469","DOIUrl":"https://doi.org/10.1109/MMET.2000.890469","url":null,"abstract":"The scattering of a plane electromagnetic wave by an infinite circular metal-dielectric cylinder (CMDC) is considered. The metal part of the cylinder is a sector of arbitrary angle of opening. One may use such structures in order to model the properties of a wedge-shaped load, which is frequently used in electromagnetic control applications. Since in some cases the analysis of the experimental data may be not reliable due to the small magnitude of the measured reflection coefficient and relative errors of the measurement equipment, there is a need for a closed-form analysis of the model structures. In the presented study the method of reexpansion in the basis functions at a given interval is used (Smirnov 1957; Shepilko 1979). The resulting field is presented in terms of the Bessel and Hankel functions. Applying the boundary condition to the Fourier series representation of the scattered field, the problem is reduced to the solution of a matrix equation with unknown expansion coefficients, which can be calculated with controlled accuracy. The scattered field is evaluated asymptotically and the backscattering radar cross section (BRCS) expression is derived. Accurate numerical results are presented in the case of E-polarized waves.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122722396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Model problems of the time-domain electromagnetic theory 时域电磁理论的模型问题
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888520
L. Velychko, A. Perov
{"title":"Model problems of the time-domain electromagnetic theory","authors":"L. Velychko, A. Perov","doi":"10.1109/MMET.2000.888520","DOIUrl":"https://doi.org/10.1109/MMET.2000.888520","url":null,"abstract":"Some model direct problems of pulse sensing are considered. The suggested numerical algorithms based on the finite-difference time-domain (FDTD) schemes utilize the exact conditions on virtual boundaries for truncating the computational domain. The numerical results obtained confirm the efficiency of the proposed approach. All programs are completed with a vivid interface.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122449103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling of elements with circular symmetry placed in a rectangular waveguide multiport 矩形波导多端口中圆形对称元件的建模
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890471
D. Kulik, A. Kirilenko
{"title":"Modeling of elements with circular symmetry placed in a rectangular waveguide multiport","authors":"D. Kulik, A. Kirilenko","doi":"10.1109/MMET.2000.890471","DOIUrl":"https://doi.org/10.1109/MMET.2000.890471","url":null,"abstract":"A set of algorithms based on matching the fields of a radial waveguide and several rectangular ones is described. The proposed approach can be applied to calculate both the multiports with tuning posts and the turnstile junctions with coaxial waveguides.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122533795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Diffraction of a plane wave by a thin material strip: solution by the analytical-numerical approach 薄材料条对平面波的衍射:用解析-数值方法求解
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888546
E. Veliev, S. Koshikawa, Kazuya Kobayashi
{"title":"Diffraction of a plane wave by a thin material strip: solution by the analytical-numerical approach","authors":"E. Veliev, S. Koshikawa, Kazuya Kobayashi","doi":"10.1109/MMET.2000.888546","DOIUrl":"https://doi.org/10.1109/MMET.2000.888546","url":null,"abstract":"The plane wave diffraction by a thin material strip is analyzed for both E and H-polarizations using a new analytical-numerical approach together with approximate boundary conditions. The problem is reduced to the solution of infinite systems of linear algebraic equations. The final results are valid provided that the thickness of the strip is small compared with the wavelength. The scattered field is evaluated asymptotically and a far field expression is derived. Illustrative numerical examples on the radar cross section are presented and the far field scattering characteristics are discussed. Some comparisons with the other existing method are also given.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117177157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Application of the Hurst exponent in the analysis of natural ELF electromagnetic noise 赫斯特指数在自然极低频电磁噪声分析中的应用
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890521
A. Nickolaenko
{"title":"Application of the Hurst exponent in the analysis of natural ELF electromagnetic noise","authors":"A. Nickolaenko","doi":"10.1109/MMET.2000.890521","DOIUrl":"https://doi.org/10.1109/MMET.2000.890521","url":null,"abstract":"We apply R/S analyses to determine the Hurst exponent for the natural electromagnetic radio signal in the extremely low frequency (ELF) band. The Hurst exponent is used for the classification of random and chaotic signals. We present the results of R/S analyses for the natural ELF radio noise and for quasi-random successions generated by a computer.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115221054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Dipole currents and interstellar propagation of electromagnetic signals 偶极电流和电磁信号的星际传播
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888518
H. Harmuth
{"title":"Dipole currents and interstellar propagation of electromagnetic signals","authors":"H. Harmuth","doi":"10.1109/MMET.2000.888518","DOIUrl":"https://doi.org/10.1109/MMET.2000.888518","url":null,"abstract":"We present results of our investigations on the propagation of EM signals through interstellar medium that is supposed to be formed by neutral atomic hydrogen gas with rather low density. We describe the model under consideration and obtain the partial differential equation for one of the EM field components, as well as formulation of the initial-boundary value problem for that equation and the method for its solution in the time domain. EM signals propagation over billions light years distance through such medium is studied for various combinations of its parameters.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Laplace transform technique for wedge shaped isorefractive regions 楔形等折射率区的拉普拉斯变换技术
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890532
Vito Daniele, M. Gilli, S. Grivet-Talocia
{"title":"A Laplace transform technique for wedge shaped isorefractive regions","authors":"Vito Daniele, M. Gilli, S. Grivet-Talocia","doi":"10.1109/MMET.2000.890532","DOIUrl":"https://doi.org/10.1109/MMET.2000.890532","url":null,"abstract":"Many techniques have been proposed for studying wedge shaped regions: among them it is important to mention the Malyuzhinets (1958) approach, which is based on the Sommerfeld representation. This technique yields an elegant formal procedure for solving difficult problems, like the diffraction by wedges with given surface impedances. However, even if the Sommerfeld integral is a valid ansatz for representing the solutions of the wave equation in angular regions, the Laplace transform appears to be a more valid representation, because of its solid mathematical foundation. Other authors have shown that the Laplace transform technique may be an alternative with respect to the Malyuzhinets approach, even if in some cases it is not so simple and elegant. In this paper we propose a new technique, based on the Laplace representations of the electromagnetic field, for solving isorefractive angular regions excited by an incident E-polarized plane wave in the z-direction.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131702493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
One generalisation of projective method for the wave diffraction problems 波衍射问题的射影法的一个推广
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890533
I. Petrusenko, L.I. Chernish
{"title":"One generalisation of projective method for the wave diffraction problems","authors":"I. Petrusenko, L.I. Chernish","doi":"10.1109/MMET.2000.890533","DOIUrl":"https://doi.org/10.1109/MMET.2000.890533","url":null,"abstract":"For the canonical problem of electrodynamic analysis of a waveguide step discontinuity a new system of interlinked integral equations has been derived, which depends on some continuous parameter. Varying this parameter the matrix models corresponding to both well-known methods of partial regions and other possible techniques, for which a geometric interpretation is absent, are obtained. This approach makes it possible to compare the properties of matrix operators and the effectiveness of some widely used methods of applied electrodynamics.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131193594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fluctuation channeling and time delay of a pulse signal in a randomly stratified medium 随机分层介质中脉冲信号的波动信道和时延
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888524
V. Freilikher, Y. Tarasov
{"title":"Fluctuation channeling and time delay of a pulse signal in a randomly stratified medium","authors":"V. Freilikher, Y. Tarasov","doi":"10.1109/MMET.2000.888524","DOIUrl":"https://doi.org/10.1109/MMET.2000.888524","url":null,"abstract":"The method of resonance expansion of one-dimensional fields is extended to the case of point-source-radiated narrow-band signals propagating in randomly layered low-dissipative media. Pulse ducting within a fluctuation waveguide and unification of the intensity spectrum far away from the source are predicted. It is an interference (Anderson) localization of multiply scattered constituent plane harmonics that causes the appearance of the low-decaying pulse tail in a 1D disordered system. Interference localization is known to appear in the case of elastic scattering only. As regards the classical waves, it was previously predicted for monochromatic point-source signals. In this paper, the problem is solved with regard to the propagation of non-stationary narrowband signals. In this case correlation of harmonics of different genuine frequencies is of decisive importance and should be properly taken into account.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127379635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信