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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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Aperture coupling in the bodies possessing a finite symmetry group 具有有限对称群的物体的孔径耦合
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890452
A. Ilinski, I. Zagorodnov, R. P. Tarasov
{"title":"Aperture coupling in the bodies possessing a finite symmetry group","authors":"A. Ilinski, I. Zagorodnov, R. P. Tarasov","doi":"10.1109/MMET.2000.890452","DOIUrl":"https://doi.org/10.1109/MMET.2000.890452","url":null,"abstract":"A numerical method for predicting the field penetrating an arbitrary opening in a symmetric body is considered. The method is based on the usage of coordinate functions of irreducible representations of the group {/spl tau//sub N/} of symmetries of the cavity. It enables one to reduce the calculation time by the factor /spl sim/N/sup 2/ and to construct numerically an inverse operator for an arbitrary excitation function. The required machine memory is also reduced by the factor N.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"9 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":"115945666","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
The vortex lattice method in the spectral problem of a rectangular waveguide with a lamellar grating 带层状光栅矩形波导光谱问题的涡点阵法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890485
V. V. Kamyshan, O.P. Kamyshan
{"title":"The vortex lattice method in the spectral problem of a rectangular waveguide with a lamellar grating","authors":"V. V. Kamyshan, O.P. Kamyshan","doi":"10.1109/MMET.2000.890485","DOIUrl":"https://doi.org/10.1109/MMET.2000.890485","url":null,"abstract":"Interest in research and use of slowing-down electromagnetic systems in waveguides with rectangular grooves has recently been revived. In the present work, a rigorous solution to the spectral problem of an infinite rectangular waveguide for the longitudinal electrical waves with periodic slowing-down systems, with any number of arbitrary size resonators in the period, is considered. This work is a generalization of previous results, where we considered a lamellar grating with one resonator in the period by using the discrete singularities (currents) method, also known as the vortex lattice method.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"2 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":"129538874","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
Self and mutual admittance of waveguide system with an impedance flange 带阻抗法兰的波导系统的自导纳和互导纳
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890474
S. Komarov, V. Scherbinin
{"title":"Self and mutual admittance of waveguide system with an impedance flange","authors":"S. Komarov, V. Scherbinin","doi":"10.1109/MMET.2000.890474","DOIUrl":"https://doi.org/10.1109/MMET.2000.890474","url":null,"abstract":"In this paper, the problem of radiation from finite array of identical waveguides with an impedance flange radiating in arbitrary stratified media has been solved. The problem can be reduced to a set of integral equations with respect to finite functions representing linear combinations of electric and magnetic fields tangential components on apertures of waveguides. The stationary functional is performed for these equations on the basis of variational principle. The expressions for the matching characteristics of the system (reflection and transmission coefficients of waveguides, self and mutual admittance) are obtained in the closed form by using the functional. The flange impedance influence on the matching characteristics of two rectangular apertures on the single mode assumption is numerically investigated.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"33 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":"127536298","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
Two-dimensional Bragg resonator with nonperiodic radial and angular perturbation of parameters 具有参数非周期径向和角摄动的二维布拉格谐振腔
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890493
V. Borulko, V.E. Ivanilov
{"title":"Two-dimensional Bragg resonator with nonperiodic radial and angular perturbation of parameters","authors":"V. Borulko, V.E. Ivanilov","doi":"10.1109/MMET.2000.890493","DOIUrl":"https://doi.org/10.1109/MMET.2000.890493","url":null,"abstract":"The reflection and angular-mode transformation of electromagnetic waves propagating in a medium with small two-dimensional quasi-periodic inhomogeneity are theoretically considered. Using a complex form of the asymptotic method of Krylov, Bogoliubov and Mitropolsky (1961), expressions for the coupling coefficients of the propagating waves are derived. The existence of \"Brewster radius\" in the Bragg phenomenon is discovered for the case of TE waves in a medium with periodic perturbation of permeability. Radial distributions of complex amplitudes are numerically computed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"36 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":"130120721","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
An analysis of the plasma stability in the upper ionosphere 电离层上部等离子体稳定性分析
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890520
V. B. Ivanov, M. Tolstikov
{"title":"An analysis of the plasma stability in the upper ionosphere","authors":"V. B. Ivanov, M. Tolstikov","doi":"10.1109/MMET.2000.890520","DOIUrl":"https://doi.org/10.1109/MMET.2000.890520","url":null,"abstract":"Ivanov and Polyakov (1998) demonstrated a possible spatial enhancement of plasma density irregularities as they propagate through the topside ionosphere. The concerned phenomenon was analyzed on the basis of the numerical solution of the equation describing the evolution of small disturbances of a quasi-wave origin. It is of interest to carry out an analytical treatment of this phenomenon, not based on computational methods. This paper presents the results of such a treatment.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"2 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":"130656949","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
Mathematical model of the measuring channel for ionosphere parameter definition by the incoherent scatter radar technique 非相干散射雷达技术电离层参数定义测量通道的数学模型
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890528
V. Lysenko
{"title":"Mathematical model of the measuring channel for ionosphere parameter definition by the incoherent scatter radar technique","authors":"V. Lysenko","doi":"10.1109/MMET.2000.890528","DOIUrl":"https://doi.org/10.1109/MMET.2000.890528","url":null,"abstract":"In the paper, a mathematical description of the measuring channel of incoherent scatter radar (ISR) is proposed. As an example of application of the model, the distortions of altitude profiles of the normalized correlation functions (NCF) of the scattering medium, electron density, electronic and ionic temperatures are calculated. The offered model can be applied to the development of measuring procedures for the ionospheric plasma parameters and estimation of their accuracy.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"2 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":"128769866","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
Performance of 2D reflector antenna system in a circular dielectric radome reinforced with an inner resistive grating 内阻栅增强圆形介质天线罩中二维反射面天线系统的性能
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890466
T. Oğuzer
{"title":"Performance of 2D reflector antenna system in a circular dielectric radome reinforced with an inner resistive grating","authors":"T. Oğuzer","doi":"10.1109/MMET.2000.890466","DOIUrl":"https://doi.org/10.1109/MMET.2000.890466","url":null,"abstract":"A reflector antenna system with a concentric dielectric radome and inner resistive grating problem is solved by regularization. This is performed only for E-polarization case. Numerical results are verified by some truncation error functions. Besides various radiation patterns are obtained.","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":"123319854","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
Applications of singular and critical point theory to the analysis and interpretation of transform and time-domain guided-wave electromagnetics 奇异点和临界点理论在变换和时域导波电磁学分析和解释中的应用
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888507
G. Hanson, A. Yakovlev
{"title":"Applications of singular and critical point theory to the analysis and interpretation of transform and time-domain guided-wave electromagnetics","authors":"G. Hanson, A. Yakovlev","doi":"10.1109/MMET.2000.888507","DOIUrl":"https://doi.org/10.1109/MMET.2000.888507","url":null,"abstract":"We summarize some previous progress in applying the theory of critical points to the analysis of guided-wave problems. In particular, we are interested in fold singular points and Morse critical points which occur in the spatial/temporal transform space. An important observation is that these points are associated with temporal transform-domain branch-point singularities, which ultimately govern observable modal interactions. Numerical results for a variety of guided-wave structures illustrate the role of critical and singular points in analysis and simulation, and their use in explaining observed modal phenomena.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"205 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925393","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
Reflection of a laser beam from a gyromagnetic layer with a magneto-dielectric substrate 激光从具有磁介质衬底的回旋磁层反射
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888615
D. Goryushko, A. Shmat’ko
{"title":"Reflection of a laser beam from a gyromagnetic layer with a magneto-dielectric substrate","authors":"D. Goryushko, A. Shmat’ko","doi":"10.1109/MMET.2000.888615","DOIUrl":"https://doi.org/10.1109/MMET.2000.888615","url":null,"abstract":"For the control of laser beam characteristics by means of electrical methods, gyromagnetic films on a dielectric substrate can be used. The beam scattering on such a structure is considered. The spatial distribution of the reflected field in the cross-section is obtained by means of Fourier analysis.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"297 1 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":"121149572","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
An analytical numerical solution method of the refraction inverse problems 折射反问题的解析数值解法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890504
G. Alekseev, A. P. Kusaykin, A. Poyedinchuk
{"title":"An analytical numerical solution method of the refraction inverse problems","authors":"G. Alekseev, A. P. Kusaykin, A. Poyedinchuk","doi":"10.1109/MMET.2000.890504","DOIUrl":"https://doi.org/10.1109/MMET.2000.890504","url":null,"abstract":"An analytical numerical method with the usage of ground measurements of the refraction angle is suggested for reconstructing the refractive index profile of spherical layered tropospheric environments. In this method, the original refraction inverse problem is reduced to the integral equation of the first kind with the self-adjoint positive definite compact operator. A numerical algorithm of solving this equation has been developed on the basis of the Lavrent'ev (1980) /spl alpha/-regularization method and tested on standard and biexponential tropospheric models.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"193 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":"122428389","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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