发布求助
文献互助 智能选刊 最新文献

Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)最新文献

筛选
英文 中文
Antennas for near-field radiothermometry 近场辐射测温天线
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888569
N. V. Yurasova, K. Gaikovich, A. N. Reznik, V. Vaks
{"title":"Antennas for near-field radiothermometry","authors":"N. V. Yurasova, K. Gaikovich, A. N. Reznik, V. Vaks","doi":"10.1109/MMET.2000.888569","DOIUrl":"https://doi.org/10.1109/MMET.2000.888569","url":null,"abstract":"The application of electrically-small antennas in the area of subsurface radiometry make possible measurements of the quasi-stationary field of thermal emission (evanescent modes at interface). New one-wavelength methods of non-invasive temperature sounding of absorbing media, such as water and living tissue, can be developed using such measurements. The quasi-stationary field component is formed in media in a different way compared to the ordinary used wave (propagating) component. Our theoretical analysis shows that the effective depth of the formation of the quasi-stationary component depends on the height of the antenna above the surface of a medium and on the antenna size. At the surface this skin-depth could be very small (for small antennas); it increases with antenna height, and at the height comparable to the wavelength in the medium it converges to skin-depth for the wave component of the thermal emission.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130647052","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
Numerical-analytical spatial-temporal characteristics of a TEM-born tem出生的数值分析时空特征
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888519
G. Ermakov
{"title":"Numerical-analytical spatial-temporal characteristics of a TEM-born","authors":"G. Ermakov","doi":"10.1109/MMET.2000.888519","DOIUrl":"https://doi.org/10.1109/MMET.2000.888519","url":null,"abstract":"The principles of calculation of the ultrawide-band signals radiators are considered. The electromagnetic analysis of a TEM-horn is carried out. The distortions of a pulse are considered at the radiation and the peak pattern of the radiator are parsed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"704 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132879182","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
3-D analysis of the compact cellular phone antennas 紧凑型手机天线的三维分析
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888584
A. Bijamov, K. Tavzarashvili, R. Zaridze, G. Bit‐Babik
{"title":"3-D analysis of the compact cellular phone antennas","authors":"A. Bijamov, K. Tavzarashvili, R. Zaridze, G. Bit‐Babik","doi":"10.1109/MMET.2000.888584","DOIUrl":"https://doi.org/10.1109/MMET.2000.888584","url":null,"abstract":"Compact adaptive volume-resonant antennas with beam-steering capability can be employed in wireless applications. The described antennas can radiate the energy in a desired direction within a certain range of angles by changing the amplitudes and phases of feeding currents of the dipoles printed on the dielectric substrate with a conductive back surface. The improved efficiency entails a lower RF exposure of the user for equal power emitted compared to conventional cellular phone antennas. The 3-D method of integrated auxiliary sources is employed to study the performance of the presented antenna.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134244799","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
Analysis method of the input impedance of a spiral antenna with given configuration 给定构型螺旋天线输入阻抗的分析方法
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888580
M. Protsenko, I.V. Tankov, V.V. Gromozdin
{"title":"Analysis method of the input impedance of a spiral antenna with given configuration","authors":"M. Protsenko, I.V. Tankov, V.V. Gromozdin","doi":"10.1109/MMET.2000.888580","DOIUrl":"https://doi.org/10.1109/MMET.2000.888580","url":null,"abstract":"A method of analysis of the spiral antenna input impedance is presented. It is based on the generalized transmission line theory that accounts for the wave nature of the electromagnetic field. Application of the iterative analysis method of the equivalent transmission line is discussed for the adopted model. Numerical modeling and experimental results for the flat Archimedean spiral antenna input impedance are presented.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124326249","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
High-Q waveguide filter 高q波导滤波器
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890482
V.V. Podlozny, V. Khardikov
{"title":"High-Q waveguide filter","authors":"V.V. Podlozny, V. Khardikov","doi":"10.1109/MMET.2000.890482","DOIUrl":"https://doi.org/10.1109/MMET.2000.890482","url":null,"abstract":"A rectangular waveguide section filled periodically with magneto-dielectric layers and metal gratings is investigated. The amplitude-frequency characteristics, conditions of the resonant transparency and high-Q natural oscillations are obtained.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"499 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123063874","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
Computing complex propagation constants of dielectric waveguides 介质波导复传播常数的计算
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890488
E. Trifonov, Y. Karchevskii
{"title":"Computing complex propagation constants of dielectric waveguides","authors":"E. Trifonov, Y. Karchevskii","doi":"10.1109/MMET.2000.890488","DOIUrl":"https://doi.org/10.1109/MMET.2000.890488","url":null,"abstract":"An approach for computing propagation constants of dielectric waveguides with arbitrary cross section is presented. The method is demonstrated by a numerical example of waveguides with circular and square cross sections. The convergence of this method is analyzed.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127861043","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
Combined utilization of eigenfunctions and integral equations to calculate the fields inside inhomogeneous dielectric bodies 结合利用本征函数和积分方程计算非均匀介电体内部场
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890464
V. N. Kisel, A. Alpatova, N. N. Kisel
{"title":"Combined utilization of eigenfunctions and integral equations to calculate the fields inside inhomogeneous dielectric bodies","authors":"V. N. Kisel, A. Alpatova, N. N. Kisel","doi":"10.1109/MMET.2000.890464","DOIUrl":"https://doi.org/10.1109/MMET.2000.890464","url":null,"abstract":"The communication deals with the solution of 2-D model problem of excitation of a uniform dielectric circular cylinder with nonuniform dielectric object called 'inclusion' contained within. The aim is reached by a combination of two rigorous techniques, namely eigenfunction expansions (EE) and volume integral equations (IE). The solution leads to a system of linear algebraic equations, whose unknowns represent the field values over the inclusion cross-section. The developed model can be efficiently utilized to solve the electromagnetic compatibility problems, to construct composite materials with predetermined electromagnetic properties and, especially, when investigating the electromagnetic fields influence on biological structures. In the last case, the cylinder is a good model of a bath with matching liquid, where the investigated object is immersed, or a model of some biological structures such as arm, leg, etc.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129319502","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
On the scheme for seeking the solution to a system of Maxwell's equations in a spherically symmetric model of the Earth-ionosphere waveguide 在地球-电离层波导球对称模型中求解麦克斯韦方程组的方案
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890523
V. Popov
{"title":"On the scheme for seeking the solution to a system of Maxwell's equations in a spherically symmetric model of the Earth-ionosphere waveguide","authors":"V. Popov","doi":"10.1109/MMET.2000.890523","DOIUrl":"https://doi.org/10.1109/MMET.2000.890523","url":null,"abstract":"A classical scheme for solving the boundary-value problem for a system of Maxwell's equations in a spherically stratified model of the Earth-ionosphere waveguide has been known since the beginning of the 20th century, and implies the following. The elementary electric or magnetic dipoles are usually assumed as emitters. In each of these cases the Hertz potentials are introduced, which satisfy partial differential equations with separable variables. Solutions to this equations are sought either in the form of a series in terms of eigenfunctions of the angular operator or in the form of a series in terms of eigenfunctions of the radial operator. The transition from one series to the other is accomplished through the Watson transformation. Attempts to generalize this scheme to the case of more sophisticated waveguide and emitter models led the author to the conclusion that the scheme should be modified. To elucidate the essence of the problem, a very simple model is considered. Unlike the classical scheme, we abandoned the idea of introducing any potentials, and formulated boundary-value problems for the components of fields. The objective of this paper is to devise a reasonably rigorous mathematical scheme for seeking the formal expressions for solving a system of Maxwell's equations.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129325952","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
Mathematical modeling of electromagnetic wave diffraction by inhomogeneous dielectric cylinders of arbitrary cross-section 任意截面非均匀介质圆柱体电磁波衍射的数学建模
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.888557
A. Lerer, G. Kalinchenko
{"title":"Mathematical modeling of electromagnetic wave diffraction by inhomogeneous dielectric cylinders of arbitrary cross-section","authors":"A. Lerer, G. Kalinchenko","doi":"10.1109/MMET.2000.888557","DOIUrl":"https://doi.org/10.1109/MMET.2000.888557","url":null,"abstract":"The method of volume integral equations has been developed for simulation of 2-D electromagnetic wave diffraction problem. The simulation of scattering by inhomogeneous dielectric cylinders of arbitrary cross-sections is carried out. The method proposed is based on the idea of analytical regularization of singular integral expressions.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129128176","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
Comparative analysis of some numerical techniques for modelling of spatial transient regimes in irregular planar structures 几种不规则平面结构空间瞬态状态数值模拟技术的比较分析
Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413) Pub Date : 2000-09-12 DOI: 10.1109/MMET.2000.890446
E. Bekker, E. Romanova, L. Melnikov, M. Marciniak
{"title":"Comparative analysis of some numerical techniques for modelling of spatial transient regimes in irregular planar structures","authors":"E. Bekker, E. Romanova, L. Melnikov, M. Marciniak","doi":"10.1109/MMET.2000.890446","DOIUrl":"https://doi.org/10.1109/MMET.2000.890446","url":null,"abstract":"There is an interest in the correct characterization of spatially transient regimes in waveguides. We compared the collocation method (Sharma and Banerjee 1989), and the beam propagation method combined with the fast Fourier transform (Van Roy et al. 1983) and the finite-difference method (Chung and Dagli 1990) (FFT-BPM and FD-BPM) applied to the investigation of the transient regime in an irregular planar waveguide.","PeriodicalId":344401,"journal":{"name":"Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930415","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
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：481959085
Book学术官方微信