发布求助
文献互助 智能选刊 最新文献

2016 URSI International Symposium on Electromagnetic Theory (EMTS)最新文献

筛选
英文 中文
Boundary shape reconstructions in a coaxial waveguide using Bessel functions 利用贝塞尔函数重建同轴波导中的边界形状
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571531
M. Dalarsson, M. Norgren
{"title":"Boundary shape reconstructions in a coaxial waveguide using Bessel functions","authors":"M. Dalarsson, M. Norgren","doi":"10.1109/URSI-EMTS.2016.7571531","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571531","url":null,"abstract":"This paper investigates boundary shape reconstructions in coaxial waveguides using microwave scattering. Electromagnetic field perturbation theory together with inverse problem theory is used to reconstruct two-dimensional small boundary deformations on the inner boundary of a coaxial waveguide. Due to the first-order perturbation theory employed, the scattering parameters of the waveguide have linear dependencies on the continuous deformation function. Thus, the corresponding inverse problem can be linearized, and direct inversion can be employed to obtain the shape parameters. Tikhonov regularization is used to regularize the resulting ill-conditioned linear system. Finally, reconstruction results are presented for a few examples of two-dimensional localized shape deformations of coaxial waveguide boundaries, being in agreement with the actual shapes.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128691453","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
Narrow-band and dual-band metamaterial absorbers in the THz regime 太赫兹波段的窄带和双带超材料吸收体
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571304
M. D. Astorino, F. Frezza, N. Tedeschi
{"title":"Narrow-band and dual-band metamaterial absorbers in the THz regime","authors":"M. D. Astorino, F. Frezza, N. Tedeschi","doi":"10.1109/URSI-EMTS.2016.7571304","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571304","url":null,"abstract":"In this paper, we consider the analysis and design of narrow-band and dual-band metamaterial absorbers in the THz regime. We observe a broadening of the angular response obtained through absorbers backed by a conducting ground plane and we apply a homogenization technique to calculate the effective electric and magnetic properties of the structures.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128724844","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
Light scattering into two fixed angles vs. angle-resolved measurements for characterization of single submicron particles 两个固定角度的光散射与单个亚微米粒子表征的角度分辨测量
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571480
A. Konokhova, M. Yurkin, V. Maltsev
{"title":"Light scattering into two fixed angles vs. angle-resolved measurements for characterization of single submicron particles","authors":"A. Konokhova, M. Yurkin, V. Maltsev","doi":"10.1109/URSI-EMTS.2016.7571480","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571480","url":null,"abstract":"Single particle identification and characterization based on scatter measurements is widely used in numerous biomedical applications. This scatter-based characterization approach implies a solution of the parametric inverse light-scattering (ILS) problem. The need for high-speed analysis limits the amount of collected scatter information and motivates maximum simplification of optical model of analyzed particles. We analyzed the capabilities and limitations of two existing approaches, based on measurement of either two scattering signals or angle-resolved patterns, applied to characterize single submicron particles. The standard flow cytometric approach is based on light scattering measurements into two fixed angles, forward and side scattering, which are further fitted by the Mie theory. We showed that corresponding ILS problem may have multiple solutions, and the procedure results in uncontrollable errors if the particle is not spherical. By contrast, angle-resolved scattering measurements have much larger information content at a cost of reduced analysis speed. This approach coupled with rigorous solution of ILS problem is shown to provide accurate identification and characterization of biological particles, including nonspherical ones.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130555415","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
On-body antennas: Design considerations and challenges 体上天线:设计考虑和挑战
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571326
S. M. Abbas, K. Esselle, L. Matekovits, M. Rizwan, L. Ukkonen
{"title":"On-body antennas: Design considerations and challenges","authors":"S. M. Abbas, K. Esselle, L. Matekovits, M. Rizwan, L. Ukkonen","doi":"10.1109/URSI-EMTS.2016.7571326","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571326","url":null,"abstract":"This paper highlights the considerations and challenges when designing antennas suitable for on-body communication in Wireless Body Area Networks. Designing antennas that are required to operate in near body scenario make it more challenging for antenna designers as several important factors need to be taken into consideration along with the human body effects. These factors include antenna detuning, impedance matching, radiation pattern, Specific Absorption Rate, size, cost, weight, positioning, bending and stable performance with the variation of the gap between the antenna and the human body. An antenna addressing these challenges is suitable for on-body communication and wearable applications.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123850256","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
Rigorous analysis of light scattering by a grating of nanocylinders coupled to a dielectric substrate 耦合到电介质衬底的纳米圆柱光栅的光散射的严格分析
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571450
V. Jandieri, K. Yasumoto, D. Erni
{"title":"Rigorous analysis of light scattering by a grating of nanocylinders coupled to a dielectric substrate","authors":"V. Jandieri, K. Yasumoto, D. Erni","doi":"10.1109/URSI-EMTS.2016.7571450","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571450","url":null,"abstract":"Light scattering by a grating made of the Ag nanocylinders onto a dielectric substrate is investigated using an accurate and rigorous formalism based on a recursive algorithm combined with the lattice sums technique. Physical insight is given to the localization of the field along the interfaces of the Ag nanocylinders, to the strong reflected field by the grating and the field enhancement at the surface of the dielectric substrate. The accuracy of the numerical analysis has been validated based on the principle of the energy conservation.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"43 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114060094","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
Electromagnetism and cross-disciplinary problems 电磁学和跨学科问题
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571436
L. Kettunen, T. Kovanen, T. Tarhasaari
{"title":"Electromagnetism and cross-disciplinary problems","authors":"L. Kettunen, T. Kovanen, T. Tarhasaari","doi":"10.1109/URSI-EMTS.2016.7571436","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571436","url":null,"abstract":"Electromagnetic theory is a model of the electromagnetic phenomenon. As is well known, the model can be expressed in many different ways. All the formulations are, however, concretizations of the same so-called “abstract general” of electromagnetism. In this paper we consider the Maxwell house as this abstract general. The motivation for this is, an increasing amount of progress in engineering science takes place on the interfaces between different fields. Cross-disciplinary results are best achieved by formalizing first the logical reasoning behind electromagnetism, as this then results in an unambiguous basis for cross-disciplinary communication.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130978003","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
Permittivity characterization based on Radar Cross measurements 基于雷达交叉测量的介电常数表征
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571425
E. Perret
{"title":"Permittivity characterization based on Radar Cross measurements","authors":"E. Perret","doi":"10.1109/URSI-EMTS.2016.7571425","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571425","url":null,"abstract":"In this paper, classical radar approaches such as the ones recently introduced for chipless RFID identifications are used for nondestructive permittivity characterization of a large variety of materials. A metallic resonant scatterer is placed on the material to be characterized and thanks to the acquisition of its resonant frequency the permittivity can be directly extracted with the use of classical formulas. Simulation and measurement results are presented to show the potential of this characterization technique and to validate the concept.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131107582","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: 10
A multi-resolution 4-D FFT approach to parametric boundary Integral Equations for helical structures 螺旋结构参数边界积分方程的多分辨率四维FFT方法
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571357
S. Nordebo, M. Štumpf, Y. Ivanenko
{"title":"A multi-resolution 4-D FFT approach to parametric boundary Integral Equations for helical structures","authors":"S. Nordebo, M. Štumpf, Y. Ivanenko","doi":"10.1109/URSI-EMTS.2016.7571357","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571357","url":null,"abstract":"This paper gives a report of an ongoing research to develop parametric boundary integral equations for helical structures and their application in the computation of induced currents and losses in three-phase power cables. The proposed technique is formulated in terms of the Electric Field Integral Equation (EFIE) or the Magnetic Field Integral Equation (MFIE) for a penetrable object together with the appropriate periodic Green's functions and a suitable parameterization of the helical structure. A simple and efficient numerical scheme is proposed for the computation of the impedance matrix in the Method of Moments (MoM) which is based on a multi-resolution 4-D FFT computation followed by polynomial extrapolation. Numerical examples are included demonstrating that the singular integrals have almost linear convergence and hence that linear or quadratic extrapolation can be used to yield accurate results.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132677500","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
Theory of a loop antenna located on the surface of a dielectric column in a magnetoplasma 磁等离子体中介电柱表面的环形天线理论
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571478
A. Kudrin, T. Zaboronkova, A. S. Zaitseva, L. Popova
{"title":"Theory of a loop antenna located on the surface of a dielectric column in a magnetoplasma","authors":"A. Kudrin, T. Zaboronkova, A. S. Zaitseva, L. Popova","doi":"10.1109/URSI-EMTS.2016.7571478","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571478","url":null,"abstract":"The electrodynamic characteristics of a circular loop antenna located coaxially on the surface of a dielectric column in a magnetoplasma are studied using the integral equation method. The antenna is excited by a time-harmonic voltage and has the form of an infinitesimally thin, perfectly conducting narrow strip coiled into a ring. The column axis is assumed to be aligned with an external static magnetic field. The problem is reduced to a system of integral equations for azimuthal harmonics of the antenna current. Using the singular properties of the kernels of the integral equations derived, the current distribution and input impedance of the antenna are found and analyzed in the case where the surrounding magnetoplasma admits the existence of electrostatic waves.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132695179","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
Beam summation theory for waves in fluctuating media. Part I: The beam-to-beam scattering matrix 波动介质中波的束和理论。第一部分:光束间散射矩阵
2016 URSI International Symposium on Electromagnetic Theory (EMTS) Pub Date : 2016-08-01 DOI: 10.1109/URSI-EMTS.2016.7571400
Matan Leibobich, E. Heyman
{"title":"Beam summation theory for waves in fluctuating media. Part I: The beam-to-beam scattering matrix","authors":"Matan Leibobich, E. Heyman","doi":"10.1109/URSI-EMTS.2016.7571400","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2016.7571400","url":null,"abstract":"We present a novel beam summation (BS) formulation for tracking wave fields in weakly fluctuating media. The overall strategy is to express the field in the medium as a discrete phase-space spectrum of beam waves, and to expand the local scattering excited by the interaction of each beam with the medium using the same beam set. Since the beams are localized in the spatial-spectral phase-space, the resulting beam-to-beam (B2B) scattering coefficients depend directly on the local spectral properties of the fluctuations, as a local alternative to the conventional plane wave scattering operator. This strategy is implemented by introducing the novel concept of propagating beam frame (PBF), a phase-space set of beam propagators that can be used as an over complete frame for a local expansion of the field and its interaction with the medium. This set constitute, in fact, a novel extension of the windowed Fourier Transform (WFT) frame. A key feature of this method is that it utilizes the same beam skeleton for all frequencies in the band. In this paper we derive this formulation and in particular we derive the closed form expressions for the B2B scattering matrix.","PeriodicalId":400853,"journal":{"name":"2016 URSI International Symposium on Electromagnetic Theory (EMTS)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133788209","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信