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Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory最新文献

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Analytical-numerical investigation of the nonlinear equation for a synthesis problem of waveguide array 波导阵列综合问题非线性方程的解析-数值研究
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049192
M. Andriychuk
{"title":"Analytical-numerical investigation of the nonlinear equation for a synthesis problem of waveguide array","authors":"M. Andriychuk","doi":"10.1109/DIPED.2002.1049192","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049192","url":null,"abstract":"The nonlinear equation of a synthesis problem for the waveguide array using a standard technique of the calculus of variations is obtained. Utilization of the Bubnov-Galerkin method for the solution of a direct problem (analysis problem) allows for certain restrictions to obtain a real kernel of this equation. The existence of a real kernel enables to carry out analytical investigation of the non-uniqueness and branching of solutions of the obtained equation. Numerical results of research of the eigen values of the corresponding-linear equation are given.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114162254","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
Implementation a hybrid MAS and SPA algorithm for broadband electromagnetic induction problems 实现了宽带电磁感应问题的混合MAS和SPA算法
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049169
F. Shubitidze, K. O'Neill, I. Shamatava, K. Sun, K. Paulsen
{"title":"Implementation a hybrid MAS and SPA algorithm for broadband electromagnetic induction problems","authors":"F. Shubitidze, K. O'Neill, I. Shamatava, K. Sun, K. Paulsen","doi":"10.1109/DIPED.2002.1049169","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049169","url":null,"abstract":"The computational complexity/efficiency of the method of auxiliary sources (MAS) is significantly reduced at high frequency (high induction number >40) for electromagnetic induction problems. At the same time the small penetration-depth approximation (SPA) is very accurate at high frequency/induction numbers. A hybrid algorithm, combining the MAS with SPA, is efficiently implemented. Numerical experiments are performed for a highly conducting and permeable sphere and a prolate spheroid under a time varying primary magnetic field. Numerical experiments demonstrate that the proposed method is able to produce very accurate results with low computational requirements.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128830653","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: 8
About self-organization and dispersion of eigen fields of a nonlinear dielectric layer 非线性介电层本征场的自组织与色散
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049187
V. Yatsyk
{"title":"About self-organization and dispersion of eigen fields of a nonlinear dielectric layer","authors":"V. Yatsyk","doi":"10.1109/DIPED.2002.1049187","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049187","url":null,"abstract":"The open nonlinear electrodynamic system - nonlinear transverse nonhomogeneous dielectric layer - is an example of an inorganic system having the properties of self-organization which is peculiar to biological systems. The necessary precondition of the effects of self-organization is the presence of a flow of energy acting in the system from an external source, due to which the system gets the ability to form structures independently (see Loskutov, A.Yu. and Mikhailov, A.S., \"Introduction into Synergetics\", Nauka Publishers, 1990). On an example of the nonlinear transverse nonhomogeneous dielectric layer, the constructive approach of the analysis of amplitude/phase dispersion of eigen oscillation-wave fields of a nonlinear object, the norm of an eigen field is defined from the solution of a diffraction problem of plane waves or excitation of a point or compact source of a nonlinear layer.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116241983","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
Software creation for the finite photonic crystals simulation 有限光子晶体模拟的软件创建
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049182
A. Bijamov, D. Karkashadze, R. Zaridze, F. Bogdanov
{"title":"Software creation for the finite photonic crystals simulation","authors":"A. Bijamov, D. Karkashadze, R. Zaridze, F. Bogdanov","doi":"10.1109/DIPED.2002.1049182","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049182","url":null,"abstract":"Devices based on photonic crystals have recently gained great interest (see Joannopoulos, J., \"Photonic Crystals: Modeling the flow of light\", Princeton University Press, 1995). This is a fast developing area of science, with a promising future prospect. Such crystals might find use in variety of microwave devices - mixers, filters, etc. Development of such structures by experimental methods is either too expensive or impossible due to technical limitations. An engineer-oriented software package has been created for the development and simulation of PGB (photonic band gap) structures made of biisotropic and complex materials.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"9 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115226462","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
Efficient FDTD simulation of fields in coaxial cables with multi-layered insulation partially formed by dispersive layers of extremely high permittivity 部分由极高介电常数色散层构成的多层绝缘同轴电缆场的有效时域有限差分模拟
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049181
R. Jobava, R. Heinrich, D. Pommerenke, W. Kalkner, A. Gheonjian
{"title":"Efficient FDTD simulation of fields in coaxial cables with multi-layered insulation partially formed by dispersive layers of extremely high permittivity","authors":"R. Jobava, R. Heinrich, D. Pommerenke, W. Kalkner, A. Gheonjian","doi":"10.1109/DIPED.2002.1049181","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049181","url":null,"abstract":"An efficient and accurate FDTD simulation technique for investigation of field propagation in multi-layered coaxial cables has been developed. This technique combines a uniform FDTD scheme with the piecewise linear recursive convolution method, which is applied for the treatment of fields in dispersive layers, having extremely high permittivity. The method has been developed and tested for a radial symmetric cylindrical system and is intended for future use in 3D applications.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127958830","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: 8
Visualization of the latent body's shape and position based on the measured scattered field 基于测量散射场的潜体形状和位置可视化
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049170
R. Zaridze, K. Tavzarashvili, G. Saparishvili, M. Maziashvili, A. Elizbarashvili
{"title":"Visualization of the latent body's shape and position based on the measured scattered field","authors":"R. Zaridze, K. Tavzarashvili, G. Saparishvili, M. Maziashvili, A. Elizbarashvili","doi":"10.1109/DIPED.2002.1049170","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049170","url":null,"abstract":"In this article we present an algorithm for the shape and position (DSP) of a latent body determination based on the holographic principle with the help of the Method of Auxiliary Sources (MAS). The algorithm considered here allows one to resolve this problem with great accuracy even if the body being metallic or dielectric has a complicated shape. We also consider the problem connected with the embedded body. The corresponding numerical results are presented.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133385681","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
Flat microwave antennas for telecommunication systems 电信系统用平面微波天线
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049178
A. Kasyanov, V. Obukhovets
{"title":"Flat microwave antennas for telecommunication systems","authors":"A. Kasyanov, V. Obukhovets","doi":"10.1109/DIPED.2002.1049178","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049178","url":null,"abstract":"In this paper it is shown, that reflectarrays have inherent advantages over parabolic reflector antennas and, hence, there is interest in using these antennas as replacements for standard reflectors. Numerical investigations of reflective type antennas with flat reflectors are discussed. Also, we have measured the scattering parameters of controllable microstrip reflectarrays. The research can be used to develop antennas with optimum parameters.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123586313","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
A theory of symmetric dipole formed of thin rectangular metallic plates 由矩形薄金属板构成的对称偶极子理论
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049167
G.S. Kevanishvili, K.V. Kotetishvili, G.K. Vashadze, D.R. Bolkvadze
{"title":"A theory of symmetric dipole formed of thin rectangular metallic plates","authors":"G.S. Kevanishvili, K.V. Kotetishvili, G.K. Vashadze, D.R. Bolkvadze","doi":"10.1109/DIPED.2002.1049167","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049167","url":null,"abstract":"Basing on the theory of generalized /spl delta/-like functions, a theory of the symmetric dipole formed of thin rectangular metallic plates has been developed. An integral equation for the surface current density was derived and its rigorous solution at h///spl lambda//spl Gt/1 (h - the dipole length, /spl lambda/ - the wavelength) was constructed. The analytical expression for the dipole directivity characteristic and input resistance was also defined.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131221588","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
Experimental and numerical investigation of pear-shaped antenna 梨形天线的实验与数值研究
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049175
R. Zaridze, G. Ghvedashvili, K. Tavzarashvili, G. Saparishvili, A. Bijamov
{"title":"Experimental and numerical investigation of pear-shaped antenna","authors":"R. Zaridze, G. Ghvedashvili, K. Tavzarashvili, G. Saparishvili, A. Bijamov","doi":"10.1109/DIPED.2002.1049175","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049175","url":null,"abstract":"A further investigation for the pear shaped metallic antenna covered with a thin dielectric layer is presented. Antenna radiation characteristics' dependence on its geometry and electromagnetic parameters has been studied. The prototype of such an antenna has been prepared and measurements have been conducted. The comparison between the numerical and experimental results is given.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"308 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124286539","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
Investigation of the resonance characteristics of the carcase 尸体共振特性的研究
Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 2002-12-10 DOI: 10.1109/DIPED.2002.1049184
R. Zaridze, D. Kakulia, G. Chelidze, G. Ghvedashvili
{"title":"Investigation of the resonance characteristics of the carcase","authors":"R. Zaridze, D. Kakulia, G. Chelidze, G. Ghvedashvili","doi":"10.1109/DIPED.2002.1049184","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049184","url":null,"abstract":"We present a numerical study of EMC/EMI problems related to the resonance enhancement of the electromagnetic (EM) field inside vehicles, its influence on the passengers and on the internal sensitive electronic devices. To this problem we have applied the method of auxiliary sources (MAS) which proves to be convenient in the cases presented here. The resonance curves were obtained for various simplified models of a car body.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132984757","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
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