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

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Optimization strategy for multiport waveguide junctions with canonical types of artificial discontinuities 具有典型型人工不连续的多端口波导结的优化策略
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201574
F. Bogdanov, G. Kevanishvili, I. Kevanishvili, D. Karkashadze
{"title":"Optimization strategy for multiport waveguide junctions with canonical types of artificial discontinuities","authors":"F. Bogdanov, G. Kevanishvili, I. Kevanishvili, D. Karkashadze","doi":"10.1109/DIPED.2005.201574","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201574","url":null,"abstract":"The rigorous theories are generalized to analyze H-plane waveguide junctions with canonical types of discontinuities. A strategy of optimising parameters of such discontinuities is given and numerically illustrated. Analysis of the scattering characteristics of waveguide tee with strip discontinuities is done, and optimal parameters of these discontinuities are predicted.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123565107","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
Axial symmetric electromagnetic excitation of a finite conical screen by the ring sources (comparison of TE- and TM- wave scattering characteristics) 环形源对有限圆锥屏的轴对称电磁激励(TE波和TM波散射特性的比较)
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201583
D. Kuryliak, O. Trishchuk
{"title":"Axial symmetric electromagnetic excitation of a finite conical screen by the ring sources (comparison of TE- and TM- wave scattering characteristics)","authors":"D. Kuryliak, O. Trishchuk","doi":"10.1109/DIPED.2005.201583","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201583","url":null,"abstract":"The axial-symmetric TE- and TM- waves scattering by the finite perfectly conducting cone is investigated. The characteristics of the far field pattern and the normalized radiation power of the ring sources located above the conical screen are studied. The comparison of the physical effects connected with electromagnetic wave radiation by the electric and magnetic rings are carried out.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"47 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114043146","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
Averaged SAR distributions and temperature rise estimatton in child head model with 835MHZ handset phone 使用835MHZ手机的儿童头部模型平均SAR分布和温升估计
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201608
L. Shoshiashvili, A. Razmadze, N. Gritsenko, R. Zaridze
{"title":"Averaged SAR distributions and temperature rise estimatton in child head model with 835MHZ handset phone","authors":"L. Shoshiashvili, A. Razmadze, N. Gritsenko, R. Zaridze","doi":"10.1109/DIPED.2005.201608","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201608","url":null,"abstract":"The Brooks visible Human model downscaled to a 10 years old child size, exposed to a mobile Phone operating at 835 MHz is studied. Using a custom program, based on the Finite-Difference Time-Domain (FDTD) method, point SAR as well as 1g and lOg averaged SAR values are compared to the results obtained using a commercial FDTD program. Temperature rise in the child head model under analysis for 0.6W output power is investigated using the Bio Heat equation.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123369146","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 biological objects by scattered waves 散射波对生物目标的研究
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201605
L. E. Berdzenishvili, Z. Melikishvili
{"title":"Investigation of the biological objects by scattered waves","authors":"L. E. Berdzenishvili, Z. Melikishvili","doi":"10.1109/DIPED.2005.201605","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201605","url":null,"abstract":"","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126019089","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
Semiasymptotic method for plane with quasiperiodic spatial perturbation of gyrotropic surface impedance 具有准周期空间扰动的陀螺表面阻抗平面的半渐近方法
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201580
V. Borulko
{"title":"Semiasymptotic method for plane with quasiperiodic spatial perturbation of gyrotropic surface impedance","authors":"V. Borulko","doi":"10.1109/DIPED.2005.201580","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201580","url":null,"abstract":"Phenomena of coupling of wave beams and surface wave at impedance plane with spatially oscillating parameters are theoretically considered. Used method is asymptotic with respect to smoothness parameter and is numerical with respect to perturbation amplitudes. It combinesadvantages of the asymptotic and numeric methods in cases of quasiperiodic structures with large number of \"periods\". Coupling coefficients are obtained for complex amplitude of resonance harmonic. Nonreciprocal Bragg phenomena are analyzed.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130688860","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
Methodology of determination of B-media parameters through the investigation of scattered EM fields 通过散射电磁场研究确定b介质参数的方法
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201609
A. Bijamov, R. Zaridze, D. Karkashadze
{"title":"Methodology of determination of B-media parameters through the investigation of scattered EM fields","authors":"A. Bijamov, R. Zaridze, D. Karkashadze","doi":"10.1109/DIPED.2005.201609","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201609","url":null,"abstract":"In this paper, the problem of material parameters determination of metamaterials is discussed. The overview for the theoretical base of metamaterials is introduced and software is presented, along with some particular results of numerical evaluations.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133399552","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
Innovative approaches to parallelizing finite-difference time-domain computations 并行化时域有限差分计算的创新方法
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201581
D. Gorodetsky, P. Wilsey
{"title":"Innovative approaches to parallelizing finite-difference time-domain computations","authors":"D. Gorodetsky, P. Wilsey","doi":"10.1109/DIPED.2005.201581","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201581","url":null,"abstract":"We investigate the Linux implementation of the finite-difference time- domain (FDTD) algorithm on a Beowulf cluster of parallel workstations. We discuss synchronization and domain decomposition alternatives. To obtain performance characteristics the algorithm is applied to a test scattering problem. The computation has been done using varying numbers of identical dual-processor AMD Athlon MP- 1800 workstations with the Message Passing Interface (MPI) used to handle the inter- processor communications and the parallel runtime.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132688265","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
Modeling of EM waves for simplified cases of urban and terrain areas by method of auxiliary sources 用辅助源方法模拟城市和地形地区简化情况下的电磁波
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201585
D. Kakulia, D. Mazmanov, G. Kajaia, T. Gogua
{"title":"Modeling of EM waves for simplified cases of urban and terrain areas by method of auxiliary sources","authors":"D. Kakulia, D. Mazmanov, G. Kajaia, T. Gogua","doi":"10.1109/DIPED.2005.201585","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201585","url":null,"abstract":"This article concerns some realistic scenarios for evaluation of the EM field and for better comprehension of its behavior indoors, outdoors and terrain areas having a place nearby of base stations [H. Lehmann et al., 2003]. Based on the method of auxiliary sources the new approaches are presented in case of problems with the electrically large objects using reasonable computational resources and keeping acceptable accuracy [R. Zaridze et al., January 2002]. Three general scenarios are marked. First, the finding of field distribution indoor, without influence of outside objects. Second considers the field distribution near the wall with finite sizes when effect of ground is taken into account. Third is the finding of the field distribution near mountains or hills. These scenarios are an integral part of all cities and consequently are taken for consideration. Corresponding results are presented below.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128280027","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
Numerical and experimental investigation of dielectric coated personal communication systems (PCS) antenna 介质涂层个人通信系统(PCS)天线的数值与实验研究
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201612
G. Ghvedashvili, K. Tavzarashvili, D. Kakulia, R. Zaridze
{"title":"Numerical and experimental investigation of dielectric coated personal communication systems (PCS) antenna","authors":"G. Ghvedashvili, K. Tavzarashvili, D. Kakulia, R. Zaridze","doi":"10.1109/DIPED.2005.201612","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201612","url":null,"abstract":"We are continuing investigation of dielectric coated personal communication systems (PCS) antennas, presented a pear-shaped antenna with optimal geometric size and shape to provide desirable electric and radiation characteristics; sophisticated user-friendly program package for simulation and visualization of dielectric coated antennas with required parameters, investigated the directed antenna radiation and conducted necessary measurements using network analyzer and anechoic chamber provided with equipment for measurement of antenna patterns. The Method of Auxiliary Sources (MAS) is used for obtaining accurate results at low computational costs. Some numerical and experimental results are presented.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116684539","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
Development of simulation model for shielded twisted pair cables in EMC immunity problems 屏蔽双绞线电缆电磁兼容抗扰度仿真模型的建立
Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory Pub Date : 1900-01-01 DOI: 10.1109/DIPED.2005.201590
R. Jobava, L. Diaz, D. Karkashadze, F. Bogdanov, E. Yavolovskaya, A. Gheonjian, I. Badzagua, S. Iosava
{"title":"Development of simulation model for shielded twisted pair cables in EMC immunity problems","authors":"R. Jobava, L. Diaz, D. Karkashadze, F. Bogdanov, E. Yavolovskaya, A. Gheonjian, I. Badzagua, S. Iosava","doi":"10.1109/DIPED.2005.201590","DOIUrl":"https://doi.org/10.1109/DIPED.2005.201590","url":null,"abstract":"The aim of this work is development and validation of the robust model suitable for analysis of the immunity and radiation problems of the shielded twisted pair cables. A model is based on the method of moments (MoM) considerations and is used for the simulations of shielded cables in TEM cell, where simulation results are compared with measurement data.","PeriodicalId":169377,"journal":{"name":"Proceedings of Xth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122856265","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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