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2008 12th International Conference on Mathematical Methods in Electromagnetic Theory最新文献

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Circular Polarized Rectangular Dielectric Resonator Antenna using single probe feeds 使用单探针馈源的圆极化矩形介电谐振器天线
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580938
S. A. Malekabadi, S. M. Moghadasi
{"title":"Circular Polarized Rectangular Dielectric Resonator Antenna using single probe feeds","authors":"S. A. Malekabadi, S. M. Moghadasi","doi":"10.1109/MMET.2008.4580938","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580938","url":null,"abstract":"In this paper rectangular dielectric resonator antennas (RDRAs) which providing circular polarization (CP) using single probe feeds are studied. A new technique for CP achievement is presented. This technique proposed that by modifying the RDRAs in suitable way, the fundamental mode of conventional rectangular DRA splits into two near-degenerate orthogonal resonant modes and CP is obtained. The proposed antennas are numerically investigated using finite element method (FEM). The investigation indicates that the radiation patterns of all antennas are remaining broadside throughout the bandwidth.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123727349","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: 9
Enhanced transmission phenomenon from the eigenoscillation point of view 从本征振荡的角度看增强传输现象
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580894
N. Don, A. Kirilenko, A. Perov
{"title":"Enhanced transmission phenomenon from the eigenoscillation point of view","authors":"N. Don, A. Kirilenko, A. Perov","doi":"10.1109/MMET.2008.4580894","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580894","url":null,"abstract":"Eigenoscillations of corresponding waveguide and periodic open resonators have been studied for explanation of the enhanced transmission through irregularities with below-cutoff holes. It has been found that the origin of the discovered effects is in the existence of the eigenoscillations of the interface between the free halfspace and the metal halfspace perforated with double-periodic set of channels or the eigenoscillations of waveguide plane junction.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123201148","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
Transient radiation from the open end of circular waveguide 圆波导开口端的瞬态辐射
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580973
O. Dumin, O. Dumina, V. Katrich
{"title":"Transient radiation from the open end of circular waveguide","authors":"O. Dumin, O. Dumina, V. Katrich","doi":"10.1109/MMET.2008.4580973","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580973","url":null,"abstract":"The transient radiation from the open end of a circular waveguide is considered by analytical and direct numerical methods. The radiation of short pulse from the aperture is considered by calculation of special time form of field by means of modal basis method. The method permits to solve the problem of pulse evolution for positive and negative time with the use of Laplace transform by construction of operator of propagation. The method of correction of pulse distortion on aperture is suggested on the base of properties of operator of propagation in waveguide. The control of pulse form of field on aperture is demonstrated.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128657057","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
Dielectric function in semi-empirical tight-binding theory applied to crystalline diamond 半经验紧结合理论中的介电函数在晶体金刚石中的应用
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580958
Á. Miranda, V. Ponomaryov, L. N. de Rivera, R. Vazquez, M. Cruz‐Irisson
{"title":"Dielectric function in semi-empirical tight-binding theory applied to crystalline diamond","authors":"Á. Miranda, V. Ponomaryov, L. N. de Rivera, R. Vazquez, M. Cruz‐Irisson","doi":"10.1109/MMET.2008.4580958","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580958","url":null,"abstract":"A semi-empirical tight-binding theory is employed to calculate the electronic band structure and the imaginary part of the dielectric function of crystalline diamond. Also, in order to validate the parameters used in this work, we have performed calculation by means of density functional theory with the local density approximation theory. We present the dependence of the dielectric function on the photon energy within two different approaches: interatomic and intra-atomic momentum matrix elements, which are applied and compared.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126193197","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
Estimation of thickness of subsurface air layer by neuron network technology application to reflected microwave signal 应用神经元网络技术估计反射微波信号的地下空气层厚度
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580920
O. Drobakhin, A. V. Doronin
{"title":"Estimation of thickness of subsurface air layer by neuron network technology application to reflected microwave signal","authors":"O. Drobakhin, A. V. Doronin","doi":"10.1109/MMET.2008.4580920","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580920","url":null,"abstract":"Neuron network technology application to subsurface air layer thickness estimation is considered. The envelope of time-domain signal was used as input data. The three-layered neuron network with backpropagation and sigmoid (S-shaped) activation function of neurons was chosen. The comparison with results of correlation method is presented.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122005385","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: 16
Fano resonance of waves in periodic slabs 周期板中波的法诺共振
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580900
N. Ptitsyna, S. Shipman, S. Venakides
{"title":"Fano resonance of waves in periodic slabs","authors":"N. Ptitsyna, S. Shipman, S. Venakides","doi":"10.1109/MMET.2008.4580900","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580900","url":null,"abstract":"We investigate Fano-type anomalous transmission of energy of plane waves across lossless slab scatterers with periodic structure in the presence of non-robust guided modes. Our approach is based on rigorous analytic perturbation of the scattering problem near a guided mode and applies to very general structures, continuous and discrete.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116738045","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
Theoretical study of guided-mode resonances in planar doubly-periodic dielectric structures 平面双周期介质结构中导模共振的理论研究
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4581056
N. Sydorchuk
{"title":"Theoretical study of guided-mode resonances in planar doubly-periodic dielectric structures","authors":"N. Sydorchuk","doi":"10.1109/MMET.2008.4581056","DOIUrl":"https://doi.org/10.1109/MMET.2008.4581056","url":null,"abstract":"In this paper the scattering characteristics are calculated with the technique based on the volume integral equations for polarization currents. Full-wave analysis is performed. A silicon-on-sapphire periodic structure is used to study the guided-mode resonances in plane-wave excitation conditions. Numerical computations for the reflection spectral resonances are presented for both weak and strong layer modulations. Spectral stability of resonances as a function of angle of incidence is investigated.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122271373","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
Improved method of remote sensing retrieval of sea water chlorophyll 一种改进的海水叶绿素遥感反演方法
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580998
E. Korchemkina, E. B. Shybanov, M.E. Lee
{"title":"Improved method of remote sensing retrieval of sea water chlorophyll","authors":"E. Korchemkina, E. B. Shybanov, M.E. Lee","doi":"10.1109/MMET.2008.4580998","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580998","url":null,"abstract":"Method of satellite data correction, adjusting the standard atmospheric correction, is considered. Marine phytoplankton pigment concentrations were retrieved from SeaWiFS data using the correction proposed. Maps of chlorophyll distribution in region of Crimean South Coast were plotted, showing best correlation with biological data than when using standard methods.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126514306","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
Using method of integral equation on the base of cross region to solving three-dimentional difraction problems 利用基于横截面的积分方程方法求解三维衍射问题
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580991
V. Morozov, V. Magro, V. Marmer
{"title":"Using method of integral equation on the base of cross region to solving three-dimentional difraction problems","authors":"V. Morozov, V. Magro, V. Marmer","doi":"10.1109/MMET.2008.4580991","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580991","url":null,"abstract":"Using method of integral equations to solving three-dimensional diffraction problems are presented. The solution of three-dimensionally problem of radiation from longitudinal slot in wide wall of rectangular waveguide is considered.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126734209","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
Correlation properties of electromagnetic field generated by emitters with random orientation 随机方向发射体电磁场的相关特性
2008 12th International Conference on Mathematical Methods in Electromagnetic Theory Pub Date : 2008-07-29 DOI: 10.1109/MMET.2008.4580964
S. Lyagushyn, Yu.M. Salyuk, A. Sokolovsky, Dnipropetrovs’k National University
{"title":"Correlation properties of electromagnetic field generated by emitters with random orientation","authors":"S. Lyagushyn, Yu.M. Salyuk, A. Sokolovsky, Dnipropetrovs’k National University","doi":"10.1109/MMET.2008.4580964","DOIUrl":"https://doi.org/10.1109/MMET.2008.4580964","url":null,"abstract":"The necessity of more thorough description of electromagnetic field is substantiated for the problems of quantum optics. An attempt to construct the correlation functions of emission generated by a superfluorescent system of Dicke type is done. Operator evolution equations for a system of two-level emitters interacting with electromagnetic field lead to quantum analogues of Maxwell equations. Reduced description method applied to the superfluorescent process allows to find parameters characterizing the field fluctuations and some generalizations of matter equations.","PeriodicalId":141554,"journal":{"name":"2008 12th International Conference on Mathematical Methods in Electromagnetic Theory","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134018490","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
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