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

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Quasilinear theory of interaction between surface plasmons and an electron beam moving parallel to a plasma surface in vacuum 表面等离子体与平行于真空等离子体表面运动的电子束之间相互作用的拟线性理论
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888598
Y. Averkov, V. Yakovenko
{"title":"Quasilinear theory of interaction between surface plasmons and an electron beam moving parallel to a plasma surface in vacuum","authors":"Y. Averkov, V. Yakovenko","doi":"10.1109/MMET.2000.888598","DOIUrl":"https://doi.org/10.1109/MMET.2000.888598","url":null,"abstract":"The quasi-linear theory of interaction between surface plasmons and a non-monoenergetic electron beam moving parallel to the semiconductor boundary is developed. For the quasi-equilibrium state the distribution function of the beam electrons, the spectrum of the surface plasmons and the value of the power losses of the electron beam for the whole relaxation time are derived.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"42 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":"128251131","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
Tolerance of the solution to the problem of a buried waveguide synthesis 解决了埋地波导合成的容差问题
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890512
N. Nikolaev, V. Shevchenko
{"title":"Tolerance of the solution to the problem of a buried waveguide synthesis","authors":"N. Nikolaev, V. Shevchenko","doi":"10.1109/MMET.2000.890512","DOIUrl":"https://doi.org/10.1109/MMET.2000.890512","url":null,"abstract":"The problem of finding the permittivity profile of graded-index single-mode planar waveguide after the given mode parameters is considered. For solving this inverse problem a universal mathematical model of the profile is implemented. It has the form of a double truncated exponential-power function. Each set of function parameters corresponds to a particular distribution of the permittivity in the waveguide. Multiply repeated numerical solution of the direct problem by a special algorithm using the least-square method enables one to select the function parameters for a certain set of mode parameters. For solving the inverse problem a knowledge of the propagation constants is required. Exact reconstruction of the waveguide parameters can be obtained by using four criteria. Nevertheless, there are always some errors in the determination of the propagation constants. The tolerance of the solution to these errors is investigated.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"28 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":"132863402","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
Modified algorithm of the R-functions method for solving electromagnetics boundary value problems 求解电磁学边值问题的改进r -函数法算法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890541
M. A. Basarab
{"title":"Modified algorithm of the R-functions method for solving electromagnetics boundary value problems","authors":"M. A. Basarab","doi":"10.1109/MMET.2000.890541","DOIUrl":"https://doi.org/10.1109/MMET.2000.890541","url":null,"abstract":"The Dirichlet problem for 2D second order partial differential equation in an arbitrary domain is considered. To solve this problem, the variational R-functions method (RFM) with the Kantorovich (1962) general structure of solution (GSS) is used. Instead of the traditional RFM scheme, the complicated implicit function of the boundary is substituted here with its approximation by a set of functions with compact supports. It is important that this set is also used in the GSS. This approach allows one to decrease significantly the quantity of numerically calculated integrals expressing the elements of the matrices of systems of linear equations.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"14 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":"116765602","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
Generalized Wiener-Hopf technique for wedge shaped regions of arbitrary angles 任意角楔形区域的广义Wiener-Hopf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.2000.890455
V. Daniele
{"title":"Generalized Wiener-Hopf technique for wedge shaped regions of arbitrary angles","authors":"V. Daniele","doi":"10.1109/MMET.2000.890455","DOIUrl":"https://doi.org/10.1109/MMET.2000.890455","url":null,"abstract":"A new technique for solving diffraction problems in angular shaped regions is presented. This technique applies both for impenetrable wedges and penetrable wedges. The functional equations obtained through this technique present different solution difficulties according to the geometry of the problem. For example, for half-planes and impenetrable or isorefractive right wedges we deal with the classic matrix W-H equations. In dealing with arbitrary media or with wedges that are not right angles, we have to introduce new functional equations, which we call generalized Wiener-Hopf equations. This paper describes some of the properties of the generalized Wiener-Hopf equations.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"14 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":"122088674","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: 14
Solving integral equations for ill-posed problems of electromagnetics based on the atomic functions 基于原子函数的电磁学不适定问题的积分方程求解
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890535
V. F. Kravchenko, M. A. Basarab
{"title":"Solving integral equations for ill-posed problems of electromagnetics based on the atomic functions","authors":"V. F. Kravchenko, M. A. Basarab","doi":"10.1109/MMET.2000.890535","DOIUrl":"https://doi.org/10.1109/MMET.2000.890535","url":null,"abstract":"The problem of implicit regularization using approximation apparatus of atomic functions for numerical solution of Fredholm integral equations of the first kind is considered.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"13 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":"122276547","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
Calculation of singular integrals in scalar diffraction problems 标量衍射问题中奇异积分的计算
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888543
O. Ovsyannikov, Y.V. Kasyanyuk
{"title":"Calculation of singular integrals in scalar diffraction problems","authors":"O. Ovsyannikov, Y.V. Kasyanyuk","doi":"10.1109/MMET.2000.888543","DOIUrl":"https://doi.org/10.1109/MMET.2000.888543","url":null,"abstract":"The axisymmetric scalar diffraction problem is presented. The singular and hypersingular integrals with normal derivative of double layer potential are considered. The methods of singular and hypersingular integrals calculation are proposed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"150 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":"124188148","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
Investigation and optimization of a waveguide slot antenna array by finite-difference time-domain method 波导缝隙天线阵的时域有限差分研究与优化
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888537
S. Martynyuk
{"title":"Investigation and optimization of a waveguide slot antenna array by finite-difference time-domain method","authors":"S. Martynyuk","doi":"10.1109/MMET.2000.888537","DOIUrl":"https://doi.org/10.1109/MMET.2000.888537","url":null,"abstract":"Classical planar waveguide slot antenna arrays are well-known and widely used in the frequency range from 4 to 14 GHz. Among the advantages of this type of antennas are low level of cross-polarisation (-35 dB or better is achievable), high levels of radiated power, low losses and simplicity. The main problem is that due to the resonant nature of the slots and their waveguide serial feed in the frequency band of this arrays are usually limited by several percent. Often different tuning posts, E-plane shorted stubs and metal plates are applied to obtain an improvement of the characteristics in the frequency range. The method of moments (MoM) was used before to analyse such arrays. But the MoM can be hardly implemented in the cases, when more complicated waveguide structures together with radiating slots are to be studied. In this paper the finite-difference time-domain method (FDTD) method was used. Due to it's high flexibility it gives the opportunity to investigate different complex structures accurately and at a high speed. Coupling between slots through the free space and waveguide and the coupling between slots and waveguide's discontinuities are taken into account.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"19 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":"130138758","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: 5
Investigation of the influence of periodic disturbances in the layered medium by the method of averaging of Krylov-Bogolyubov 用Krylov-Bogolyubov平均法研究层状介质中周期性扰动的影响
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890542
K. Kramarenko, N.A. Khizhnyak
{"title":"Investigation of the influence of periodic disturbances in the layered medium by the method of averaging of Krylov-Bogolyubov","authors":"K. Kramarenko, N.A. Khizhnyak","doi":"10.1109/MMET.2000.890542","DOIUrl":"https://doi.org/10.1109/MMET.2000.890542","url":null,"abstract":"The influence of small periodic disturbances in periodic dielectric medium on propagation of TM-waves, investigated by the Krylov-Bogolyubov averaging method, results in the phenomenon of parametric resonance. As a result of periodic disturbance inside the allowed bands of undisturbed medium forbidden bands appear. The appearance of forbidden bands is conditioned by a parametric resonance between spatial harmonics of disturbance and plane waves, on which the solution of the wave equation in a periodic medium is decomposed. The location, number and width of these bands are determined.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"7 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":"130491562","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
Antenna sub-system for Meteosat second generation satellites: modeling tools and needs 气象卫星第二代卫星天线子系统:建模工具和需求
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888510
K. Klooster, Massimo Di Fausto, I. Floriu, Alessandro Rosa, Bernard Robert
{"title":"Antenna sub-system for Meteosat second generation satellites: modeling tools and needs","authors":"K. Klooster, Massimo Di Fausto, I. Floriu, Alessandro Rosa, Bernard Robert","doi":"10.1109/MMET.2000.888510","DOIUrl":"https://doi.org/10.1109/MMET.2000.888510","url":null,"abstract":"The Meteosat Second Generation (MSG) program concerns the launch and operation of three new satellites. The MSG continues meteorological services, which are currently provided by the very successful first generation of satellites (Meteosat Operational Program-MOP), operated by Eumetsat. The MSG expands on services offered by MPO by providing more frequently data in more observation bands, with higher resolution. A telecommunication system on-board the MSG satellite transmits measured data to the primary ground station and receives and re-transmits pre-processed images and meteorological data as received from the latter station. Meteorological data are collected from data collection platforms. The MSG satellite carries a search and rescue transponder. The antenna sub-system has been specifically designed for the telecommunication functions and permits appropriate data throughput with the satellite spinning at a rate of 100 revolutions per minute. The antenna sub-system for the MSG is described, after a short general description.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"228 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":"124525604","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: 2
One-dimensional optimization of silicon solar cells 硅太阳能电池的一维优化
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888611
M.A. Ustyantsev, V. A. Antonova, G. Churyumov
{"title":"One-dimensional optimization of silicon solar cells","authors":"M.A. Ustyantsev, V. A. Antonova, G. Churyumov","doi":"10.1109/MMET.2000.888611","DOIUrl":"https://doi.org/10.1109/MMET.2000.888611","url":null,"abstract":"One of the most important problems in the design of modern photovoltaic cells is increasing their efficiency. The solution of this problem is connected with an investigation of new types of solar cells as well as optimization of the output characteristics of present devices. In this paper, a formulation of the problem and a one-dimensional (1D) simulation technique developed for computer modelling and optimization of the high-efficiency silicon solar cells is discussed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"133 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":"121299793","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
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