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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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Bicriterion optimization problems for power transmitting line 输电线路双准则优化问题
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.2002.1049189
O.V. Kusyi, S. Shaposhnikov, R. Vaganov, N. N. Voitovich
{"title":"Bicriterion optimization problems for power transmitting line","authors":"O.V. Kusyi, S. Shaposhnikov, R. Vaganov, N. N. Voitovich","doi":"10.1109/DIPED.2002.1049189","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049189","url":null,"abstract":"Two bicriterion optimization problems consisting of the minimization of functionals, describing the energy and ecology requirements (transmission efficiency, surface usage, side radiation) are considered. A numerical method is proposed and 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":"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":"123304444","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
The multi-band, multi-pitch antenna 多波段、多间距天线
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.2002.1049176
S. Ooi, G. Bit‐Babik
{"title":"The multi-band, multi-pitch antenna","authors":"S. Ooi, G. Bit‐Babik","doi":"10.1109/DIPED.2002.1049176","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049176","url":null,"abstract":"A new design of multi-band, broadband multiple pitch helical antenna is presented. The proposed antenna is applicable for the use of portable transceivers to cover two bands of operating frequencies. The first band covers 150 MHz to 174 MHz. The second band covers 764 to 870 MHz. Dividing the helix into multiple segments with different pitches and number of turns to create multiple, overlapping resonances, a VSWR of better than 2:1 is achieved from 764 to 870 MHz. Also, by using a simple, two-element high-pass matching circuit, the antenna is matched to 50 ohms from 150 to 174 MHz without affecting the response in the second band. The radiation patterns of the antenna mounted on a portable radio chassis exhibit the characteristics of a dipole in both bands. The helical antenna remains as a single feeding, single element antenna.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"25 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":"128495826","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 and propagation in finite photonic crystals with complex material filling 具有复杂材料填充的有限光子晶体中的散射和传播
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.2002.1049180
D. Karkashadze, F. G. Bogdanov, R. Zaridze, A. Bijamov
{"title":"Scattering and propagation in finite photonic crystals with complex material filling","authors":"D. Karkashadze, F. G. Bogdanov, R. Zaridze, A. Bijamov","doi":"10.1109/DIPED.2002.1049180","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049180","url":null,"abstract":"The method of auxiliary sources (MAS) is used to study doped finite photonic crystals (FPC) with anisotropic, chiral or other complex material inclusions. The primitive cells of FPC are supposed to have a given crystallographic structure with certain defects, such as extrinsic inclusions, vacancies, dislocations and so on. An effective solution to the wave propagation and scattering problems in such crystals is obtained, an original treatment of eigenvalue and eigenfield problems in application to FPC is presented, and the FPC band structure is calculated, taking account of inter-cell interactions. A new computer code to analyze radiation, scattering, absorption and energetic characteristics of the doped FPC is described, and its possibilities for the design of integrated optic devices are demonstrated.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"9 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":"126402453","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
Dynamic stress concentration in the vicinity of arbitrary-form hole in a half-space 半空间中任意形状孔洞附近的动应力集中
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.2002.1049195
Y. Kunets’, V. Matus, V.V. Porochovsky
{"title":"Dynamic stress concentration in the vicinity of arbitrary-form hole in a half-space","authors":"Y. Kunets’, V. Matus, V.V. Porochovsky","doi":"10.1109/DIPED.2002.1049195","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049195","url":null,"abstract":"The procedure to study the stresses in the vicinity of an arbitrary-form hole in an elastic half-space is proposed. The surface of the cavity is under time-variable pressure. The procedure is based on utilization of Fourier integral time transform and the null-field method.","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":"115625339","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
About evaluation of the potential integrals for near field calculations in MoM solution to EFIE for triangulated surfaces 三角曲面EFIE的MoM解中近场计算势积分的评定
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.2002.1049186
F. Bogdanov, R. Jobava, S. Frei
{"title":"About evaluation of the potential integrals for near field calculations in MoM solution to EFIE for triangulated surfaces","authors":"F. Bogdanov, R. Jobava, S. Frei","doi":"10.1109/DIPED.2002.1049186","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049186","url":null,"abstract":"An analytical evaluation is given of potential integrals for near field calculations of electromagnetically excited triangulated structures. An application of the derived expressions for calculating the near field of a simple car model is shown in comparison with the results obtained by well-known code.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"2 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":"122868522","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
Electromagnetic imaging for a conducting cylinder buried in the three layers structure 埋于三层结构中的导电圆柱体的电磁成像
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.2002.1049179
Chun-Yuan Chou, C. Chiu
{"title":"Electromagnetic imaging for a conducting cylinder buried in the three layers structure","authors":"Chun-Yuan Chou, C. Chiu","doi":"10.1109/DIPED.2002.1049179","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049179","url":null,"abstract":"The paper presents a computational approach to the imaging of a conducting cylinder buried in the three layers structure. A conducting cylinder of unknown shape, which is buried in the second layer scatters the incident wave from the first layer and the scattered field is recorded in the first and third layers. Based on the boundary condition and the measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is optimized by the genetic algorithm. Numerical results demonstrated that, even when the initial guess is far away from the exact one, good reconstruction has been obtained.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"40 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":"131039466","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 method of decomposition on eigenfunctions application to inhomogeneous coaxial cables simulation 特征函数分解方法在非均匀同轴电缆仿真中的应用
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.2002.1049183
E. Nikolaeva, D.D. Karkashadze, A.Y. Bijamov
{"title":"The method of decomposition on eigenfunctions application to inhomogeneous coaxial cables simulation","authors":"E. Nikolaeva, D.D. Karkashadze, A.Y. Bijamov","doi":"10.1109/DIPED.2002.1049183","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049183","url":null,"abstract":"The method of decomposition on eigenfunctions has been extensively applied to the wave propagation simulation in inhomogeneous coaxial cable. It provides a comparatively faster algorithm for simulation and visualization of electromagnetic processes occurring in long coaxial lines. The method is applied to the simulation of cables with a steel partition, as well as the junction domain of layered cables. This method is extended and applied for the investigation of cables with different heterogeneity, as well as for different cable junction area simulation.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"14 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":"126961269","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 by dihedral conductive wedge cylindrically tipped and concentric multilayered dielectric coated 二面体导电楔形圆柱端部和同心多层介质包覆的散射
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.2002.1049173
A. Y. Shepilko, Y. Shepilko
{"title":"Scattering by dihedral conductive wedge cylindrically tipped and concentric multilayered dielectric coated","authors":"A. Y. Shepilko, Y. Shepilko","doi":"10.1109/DIPED.2002.1049173","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049173","url":null,"abstract":"In the presented study the rigorous solution of the problem in closed-form is obtained. The boundary-value method using the property of completeness of angular functions on a certain interval is employed to obtain the solution. The back radar cross section (BRCS) of the structure is evaluated asymptotically and numerical results with controlled accuracy are presented in case of H-polarized waves. It is shown that the BRCS of a structure with a two-layer dielectric covering has oscillated character in a wide frequency range.","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"14 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":"115013037","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 asymmetry of the near field of nonsuperdirected small antenna 非超定向小型天线近场的不对称性
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.2002.1049164
B. Katsenelenbaum
{"title":"The asymmetry of the near field of nonsuperdirected small antenna","authors":"B. Katsenelenbaum","doi":"10.1109/DIPED.2002.1049164","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049164","url":null,"abstract":"The evaluation of the possibility of the near field asymmetry for the small resonant antenna with a smooth distribution of electric field on its surface is given. The antennas with the asymmetry field in the near domain can be used in many technical applications (electromagnetic compatibility, mobile phone and so on). The asymmetry is not present in the radiation pattern (except for the case when antenna has a very prolate shape).","PeriodicalId":164885,"journal":{"name":"Proceedings of the 7th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"77 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":"115782581","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
Modelling of nonlinear electromagnetic wave propagation in random discrete absorbing media 非线性电磁波在随机离散吸收介质中的传播模型
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.2002.1049174
V. Spitsyn
{"title":"Modelling of nonlinear electromagnetic wave propagation in random discrete absorbing media","authors":"V. Spitsyn","doi":"10.1109/DIPED.2002.1049174","DOIUrl":"https://doi.org/10.1109/DIPED.2002.1049174","url":null,"abstract":"In this paper we suggest a method of computation of electromagnetic signal interaction with absorbing inhomogeneity in three-dimensional random discrete media. We model the process of wave multiple interaction with discrete inhomogeneity chaotically disposed in the layer media. The result of a computer imitation of the process on the basis of a stochastic model yields the distributions in space of co-ordinates of the energy of the scattering wave and energy of absorption wave dependent on interaction time.","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":"114257626","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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