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2010 URSI International Symposium on Electromagnetic Theory最新文献

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Wavelet analysis for an electromagnetic field 电磁场的小波分析
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2011-10-20 DOI: 10.1109/URSIGASS.2011.6050444
M. Sidorenko
{"title":"Wavelet analysis for an electromagnetic field","authors":"M. Sidorenko","doi":"10.1109/URSIGASS.2011.6050444","DOIUrl":"https://doi.org/10.1109/URSIGASS.2011.6050444","url":null,"abstract":"We obtain an exact integral representation of the free electromagnetic field as a superposition of localized elementary solutions. The representation involves the continuous wavelet transform. The results can be used for studying electromagnetic fields with multiscale structure.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"XCVII 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128678153","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
Variations on the switched-oscillator theme 切换振荡器主题的变奏
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637092
C. Baum
{"title":"Variations on the switched-oscillator theme","authors":"C. Baum","doi":"10.1109/URSI-EMTS.2010.5637092","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637092","url":null,"abstract":"This paper extends the design options for switched oscillators. The oscillator length is increased for a given frequency, up to a full wavelength for the differential version. Multiax cable topology is fundamental to these extensions.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117341835","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: 6
Temporal evolution of channel capacity in vehicular MIMO channels in the 5 GHz band 5ghz频段车载MIMO信道容量的时间演化
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637364
A. Alonso, C. Mecklenbrauker, A. Paier, T. Zemen, N. Czink, F. Tufvesson
{"title":"Temporal evolution of channel capacity in vehicular MIMO channels in the 5 GHz band","authors":"A. Alonso, C. Mecklenbrauker, A. Paier, T. Zemen, N. Czink, F. Tufvesson","doi":"10.1109/URSI-EMTS.2010.5637364","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637364","url":null,"abstract":"Reliability in Ricean multiple-input-multiple-output (MIMO) channels is crucial for safety related vehicle-to-vehicle (V2V) applications. Due to the time variability of vehicular communication channel, it is very significant to study the temporal evolution of channel characterization criteria. We present evaluation results of the temporal evolution of the spectral efficiency from channel sounder measurements of vehicle-to-vehicle MIMO radio channels in the 5.2 GHz band. Our results show that MIMO channels with higher spatial correlation lead to lower ergodic capacity and a reduced signal-to-noise ratio-dependent critical data rate. The temporal evolution of the ergodic capacity and critical data rate shows that the channel with the strongest line of sight (LoS) component also has the highest capacity. We also present a detailed analysis of the environmental factors affecting the capacity pattern throughout the measurement run. Dynamic scatterers introduce capacity bursts instantaneously; the trend stays congruent with the theory.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127138020","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
Security-related active imaging of dielectric objects attached to human bodies 附着在人体上的电介质物体的安全相关主动成像
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637371
S. Bertl, J. Detlefsen
{"title":"Security-related active imaging of dielectric objects attached to human bodies","authors":"S. Bertl, J. Detlefsen","doi":"10.1109/URSI-EMTS.2010.5637371","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637371","url":null,"abstract":"In the last years, several approaches for the detection of concealed threats at the body of a person have been developed using millimetre-waves. The utilisation of millimetre-waves allows for the detection of both metallic and non-metallic objects. Setups using active illumination mainly exploit coherence between transmitted and received signal to perform beamforming or processing along a synthetic aperture. When dielectric objects should be detected, the assumptions done in these processing steps are often no longer given. The same applies for objects that are placed in front of a reflecting background like the human skin. The effects that can occur for these conditions are discussed in this paper.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127378153","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
E.M. Inverse Scattering and Multi-Layer Perceptrons: Towards the automatic reconstruction of buried layers' properties 电磁逆散射与多层感知器:面向埋藏层性质的自动重建
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637142
S. Caorsi, M. Stasolla
{"title":"E.M. Inverse Scattering and Multi-Layer Perceptrons: Towards the automatic reconstruction of buried layers' properties","authors":"S. Caorsi, M. Stasolla","doi":"10.1109/URSI-EMTS.2010.5637142","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637142","url":null,"abstract":"The goal of this paper is a preliminary robustness assessment of a recently published ANN-based algorithm for the evaluation of subsurface layers' properties. In particular, the analysis will focus on the dependency of overall performances on the training set dimensions and the neural networks capabilities of managing numerical errors.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125011088","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
Sensitivity of electromagnetic waves to a heterogeneous bianisotropic structure 电磁波对非均质双各向异性结构的灵敏度
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637298
L. Klimeš
{"title":"Sensitivity of electromagnetic waves to a heterogeneous bianisotropic structure","authors":"L. Klimeš","doi":"10.1109/URSI-EMTS.2010.5637298","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637298","url":null,"abstract":"We study how the perturbations of a generally heterogeneous bianisotropic structure manifest themselves in the wave field, and which perturbations can be detected within a limited aperture and a limited frequency band. A short-duration broad-band incident wave field with a smooth frequency spectrum is considered. Infinitesimally small perturbations of the constitutive tensor are decomposed into Gabor functions. The wave field scattered by the perturbations is then composed of waves scattered by the individual Gabor functions. The scattered waves are estimated using the first-order Born approximation with the paraxial ray approximation.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123577194","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
Regular space filling tetrahedral elements for transmission line modelling (TLM) 用于输电线路建模的规则空间填充四面体单元
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5636988
P. Sewell, T. Benson, C. Christopoulos, D. Thomas, A. Vukovic
{"title":"Regular space filling tetrahedral elements for transmission line modelling (TLM)","authors":"P. Sewell, T. Benson, C. Christopoulos, D. Thomas, A. Vukovic","doi":"10.1109/URSI-EMTS.2010.5636988","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5636988","url":null,"abstract":"The advantages of electromagnetic simulations operating on unstructured tetrahedral meshes are the availability of smooth boundary approximations and seamless multi-scale meshing. However in general, computational efficiency is notably better with regular elements and therefore in practice hybrid meshes usually provide the most valuable overall approach. In this paper we consider the scope of a particular tetrahedral scattering element that is both space filling and computationally efficient to implement in TLM simulations.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123667433","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
Scattering analysis of Discrete Bodies of Revolution via an efficient numerical algorithm 基于高效数值算法的离散公转体散射分析
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637295
H. Anastassiu, N. Tsitsas, P. Papakanellos
{"title":"Scattering analysis of Discrete Bodies of Revolution via an efficient numerical algorithm","authors":"H. Anastassiu, N. Tsitsas, P. Papakanellos","doi":"10.1109/URSI-EMTS.2010.5637295","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637295","url":null,"abstract":"Electromagnetic Scattering from Discrete Bodies of Revolution (DBOR's) is performed by invoking a recently developed, recursive linear system direct solver. The problem is initially formulated via a standard Moment Method (MoM) with point matching, however the DBOR symmetry is taken into account to simplify calculations. Specifically, the MoM matrix is cast in a form comprising circulant blocks, which is amenable to eigenvalue decomposition, and subsequent direct matrix inversion by an efficient recursive technique.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125277831","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
Full-wave simulation of Body Area Networks using the FDTD method 体域网络的FDTD全波仿真
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637006
J. Bringuier, R. Mittra
{"title":"Full-wave simulation of Body Area Networks using the FDTD method","authors":"J. Bringuier, R. Mittra","doi":"10.1109/URSI-EMTS.2010.5637006","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637006","url":null,"abstract":"In this paper the authors provide a rigorous full-wave simulation of Body Area Networks (BANs) using the FDTD. Some relevant statistical parameters for path loss are presented for different body-phantom models.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125515618","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
Different approaches of numerical analysis of electromagnetic phenomena in shaded pole motor with application of finite elements method 应用有限元法对阴极电机电磁现象进行数值分析的不同方法
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637365
V. Šarac
{"title":"Different approaches of numerical analysis of electromagnetic phenomena in shaded pole motor with application of finite elements method","authors":"V. Šarac","doi":"10.1109/URSI-EMTS.2010.5637365","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637365","url":null,"abstract":"In this paper is used Finite Element Method-FEM for analysis of electromagnetic quantities of small micro motor - single phase shaded pole motor-SPSPM. FEM is widely used numerical method for solving nonlinear partial differential equations with variable coefficients. For that purpose motor model is developed with exact geometry and material's characteristics. Two different approaches are applied in FEM analysis of electromagnetic phenomena inside the motor: magneto-static where all electromagnetic quantities are analysed in exact moment of time meaning frequency f=0 Hz and time-harmonic magnetic approach where the magnetic field inside the machine is time varying, meaning frequency f=50 Hz. Obtained results are presented and compared with available analytical results","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115199506","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
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