Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314306
O. Piddubniak, N. Piddubniak
The pulse stress-strain state of an elastic circular cylinder of infinite length rotating about its axis (acoustic rototron) in water is investigated. The transition and resonance characteristics of acoustic rototrons made from different materials are analyzed
{"title":"Transition and Resonance Processes in the Material of an Acoustic Rototron","authors":"O. Piddubniak, N. Piddubniak","doi":"10.1109/DIPED.2006.314306","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314306","url":null,"abstract":"The pulse stress-strain state of an elastic circular cylinder of infinite length rotating about its axis (acoustic rototron) in water is investigated. The transition and resonance characteristics of acoustic rototrons made from different materials are analyzed","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131660324","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314296
D. Kakulia, G. Kajaia, G. Ghvedashvili, D. Karkashadze, R. Zaridze
Paper presents results of numerical investigation, which reflect transmission characteristics of dielectric layers with one periodical shape to incident electromagnetic plane waves. Expanded for two dimensional and one periodic problem the method of auxiliary sources (MAS) is applied for numerical simulations
{"title":"Transmission Characteristics of Dielectric Layers with Periodical Dents","authors":"D. Kakulia, G. Kajaia, G. Ghvedashvili, D. Karkashadze, R. Zaridze","doi":"10.1109/DIPED.2006.314296","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314296","url":null,"abstract":"Paper presents results of numerical investigation, which reflect transmission characteristics of dielectric layers with one periodical shape to incident electromagnetic plane waves. Expanded for two dimensional and one periodic problem the method of auxiliary sources (MAS) is applied for numerical simulations","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132240613","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314279
E. Gevorkyan
The propagation of electromagnetic TE waves in the waveguide of arbitrary cross section with space-time periodically modulated filling is considered. The wave equation with periodic coefficients for the potential Hz is solved with help of the double-scale expansion method. The solutions of the wave equation on the transition boundary between the stable and unstable regions are obtained
{"title":"The Application of Double - Scale Expansion Method for the Solving of the Wave Equation with Periodic Coefficients","authors":"E. Gevorkyan","doi":"10.1109/DIPED.2006.314279","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314279","url":null,"abstract":"The propagation of electromagnetic TE waves in the waveguide of arbitrary cross section with space-time periodically modulated filling is considered. The wave equation with periodic coefficients for the potential Hz is solved with help of the double-scale expansion method. The solutions of the wave equation on the transition boundary between the stable and unstable regions are obtained","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124323877","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314277
D. Mazmanov, L. Manukyan, D. Kakulia, A. Razmadze, L. Shoshiashvili, R. Zaridze
In this paper software program package (SPP) for study of the wide class of the EM problems based on the method of auxiliary sources (MAS) solver is described. This SPP allows solving 3D diffraction and wave propagation problems, close to the real scenarios. This SPP based on MAS as mutually complementary together with FDTD solver will be implemented into FDTDLab
{"title":"MAS Based Software for the Solving of Diffraction and SAR Problems on Unbounded Objects","authors":"D. Mazmanov, L. Manukyan, D. Kakulia, A. Razmadze, L. Shoshiashvili, R. Zaridze","doi":"10.1109/DIPED.2006.314277","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314277","url":null,"abstract":"In this paper software program package (SPP) for study of the wide class of the EM problems based on the method of auxiliary sources (MAS) solver is described. This SPP allows solving 3D diffraction and wave propagation problems, close to the real scenarios. This SPP based on MAS as mutually complementary together with FDTD solver will be implemented into FDTDLab","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129081406","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314319
Jr. Bijamov A, D. Kakuiia, G. Saparishvili, T. Gogua, D. Karkashadze, R. Zaridze
The need for computer aided design and numerical simulations for the devices and functional elements based on complex materials is discussed. A brief overview of the difficulties evolving while using traditional numerical methods is given. The rough extension of MAS algorithm that gives us the opportunity to simulate multi-node, complex-material based devices in real time with satisfactory precision is introduced
{"title":"Software for 3D Computer Simulation of Complex Material Based Devices","authors":"Jr. Bijamov A, D. Kakuiia, G. Saparishvili, T. Gogua, D. Karkashadze, R. Zaridze","doi":"10.1109/DIPED.2006.314319","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314319","url":null,"abstract":"The need for computer aided design and numerical simulations for the devices and functional elements based on complex materials is discussed. A brief overview of the difficulties evolving while using traditional numerical methods is given. The rough extension of MAS algorithm that gives us the opportunity to simulate multi-node, complex-material based devices in real time with satisfactory precision is introduced","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116657897","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314303
I. I. Zinenko, V. Pyankov, V. Chumachenko
The domain-product technique and generalized scattering matrices are used to study radiation properties of a flanged sectoral horn with the parallel-plate waveguide feed. The structure incorporates dielectric slab pushed into the aperture. The excitation mechanism involves a TEM wave with the magnetic component along the generatrix
{"title":"Analysis of a Flanged Sectoral Horn Loaded with Dielectric Plug","authors":"I. I. Zinenko, V. Pyankov, V. Chumachenko","doi":"10.1109/DIPED.2006.314303","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314303","url":null,"abstract":"The domain-product technique and generalized scattering matrices are used to study radiation properties of a flanged sectoral horn with the parallel-plate waveguide feed. The structure incorporates dielectric slab pushed into the aperture. The excitation mechanism involves a TEM wave with the magnetic component along the generatrix","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115453533","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314295
L. E. Berdzenishvili, E.B. Jakobia
As we have shown in a number of works, short-lived color centers (SLCC), formed in active elements in waveguide spoke-like lasers on neodymium-doped silicate glasses under the influence of short-wave (SW) part of spectrum of exciting lamp, cause a self-modulation of Q-factor with irradiation of regular giant pulses (GP) with repetition frequency up to 30 kHz. For further study and modeling of generation of spoke-like neodymium-doped lasers a determination of values of inductive losses in active laser element and its influence on parameters of generation is very important. In the present work an analysis of experimental results is conducted by means of kinetic equations of generation with presence of SLCC. Concentration of inductive losses ace induced by SLCC and its influence on duration Deltat and intensity I of GP is determined
{"title":"Study of Inductive Losses in Waveguide Spoke-Like Lasers on Neodymium-Doped Silicate Glasses","authors":"L. E. Berdzenishvili, E.B. Jakobia","doi":"10.1109/DIPED.2006.314295","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314295","url":null,"abstract":"As we have shown in a number of works, short-lived color centers (SLCC), formed in active elements in waveguide spoke-like lasers on neodymium-doped silicate glasses under the influence of short-wave (SW) part of spectrum of exciting lamp, cause a self-modulation of Q-factor with irradiation of regular giant pulses (GP) with repetition frequency up to 30 kHz. For further study and modeling of generation of spoke-like neodymium-doped lasers a determination of values of inductive losses in active laser element and its influence on parameters of generation is very important. In the present work an analysis of experimental results is conducted by means of kinetic equations of generation with presence of SLCC. Concentration of inductive losses ace induced by SLCC and its influence on duration Deltat and intensity I of GP is determined","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124152753","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314301
B. Levin
The method of a calculation of a current phase increment in a two-layer microstrip antenna in comparison with an incident field phase and accordingly of a field phase step in a signal reradiation by a reflectarray element is offered. The field phase step depending on an antenna length and a capacity of the condenser, formed by a slot, cut in an antenna, is calculated
{"title":"Method of Calculation of Two-Layer Reflectarray with Microstrip Radiators","authors":"B. Levin","doi":"10.1109/DIPED.2006.314301","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314301","url":null,"abstract":"The method of a calculation of a current phase increment in a two-layer microstrip antenna in comparison with an incident field phase and accordingly of a field phase step in a signal reradiation by a reflectarray element is offered. The field phase step depending on an antenna length and a capacity of the condenser, formed by a slot, cut in an antenna, is calculated","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114939024","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314309
C. Athanasiadis, N. Tsitsas
A layered scatterer with a soft or hard core is excited by a time harmonic spherical acoustic wave, generated by a point source located in the interior of the scatterer. Reciprocity and general scattering relations are established, relating the total, primary and secondary fields with the corresponding far field patterns. Moreover, we formulate the optical theorem, relating the scattering cross section with the field in the layer of the source
{"title":"Scattering Relations for Interior Acoustic Excitation of a Layered Obstacle with a Soft Or Hard Core","authors":"C. Athanasiadis, N. Tsitsas","doi":"10.1109/DIPED.2006.314309","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314309","url":null,"abstract":"A layered scatterer with a soft or hard core is excited by a time harmonic spherical acoustic wave, generated by a point source located in the interior of the scatterer. Reciprocity and general scattering relations are established, relating the total, primary and secondary fields with the corresponding far field patterns. Moreover, we formulate the optical theorem, relating the scattering cross section with the field in the layer of the source","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129905850","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}
Pub Date : 2006-10-01DOI: 10.1109/DIPED.2006.314307
O. Piddubniak, N. Piddubniak
The sound pulse radiation from a rotating elastic circular cylinder immersed in water (acoustic rototron) is studied. The transition and resonance characteristics of acoustic signals for the cases of radiator made from different materials are considered
{"title":"Pulse Radiation by Acoustic Rototron","authors":"O. Piddubniak, N. Piddubniak","doi":"10.1109/DIPED.2006.314307","DOIUrl":"https://doi.org/10.1109/DIPED.2006.314307","url":null,"abstract":"The sound pulse radiation from a rotating elastic circular cylinder immersed in water (acoustic rototron) is studied. The transition and resonance characteristics of acoustic signals for the cases of radiator made from different materials are considered","PeriodicalId":183082,"journal":{"name":"Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131175564","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}
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