发布求助
文献互助 智能选刊 最新文献

2010 URSI International Symposium on Electromagnetic Theory最新文献

筛选
英文 中文
Differences between extended-integral-equation and method-of-auxiliary-sources solutions of a simple scattering problem 一类简单散射问题的扩展积分方程解与辅助源法解的区别
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637379
G. Fikioris, N. Tsitsas, I. Psarros
{"title":"Differences between extended-integral-equation and method-of-auxiliary-sources solutions of a simple scattering problem","authors":"G. Fikioris, N. Tsitsas, I. Psarros","doi":"10.1109/URSI-EMTS.2010.5637379","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637379","url":null,"abstract":"The auxiliary surface current, determined by applying the Method of Auxiliary Sources (MAS) to scattering problems by perfect conductors, may exhibit a certain form of oscillations, which are inherent to MAS and are independent of the word-length and the numerical-integration routines. The purpose of the present work is to demonstrate analytically that the “extended integral equation” (which is similar to the MAS one with the main difference that the unknown is the actual surface current on the scatterer) does not exhibit oscillations of the type described above. Hence, oscillations occurring in the extended integral equation are likely to be due to finite word-length or numerical integration errors.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"15 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":"126027250","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
A low storage curvilinear discontinuous Galerkin time-domain method for electromagnetics 电磁学的低存储曲线不连续伽辽金时域方法
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637392
T. Warburton
{"title":"A low storage curvilinear discontinuous Galerkin time-domain method for electromagnetics","authors":"T. Warburton","doi":"10.1109/URSI-EMTS.2010.5637392","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637392","url":null,"abstract":"A low storage curvilinear discontinuous Galerkin method for simulating time domain electromagnetic wave propagation is presented. The algorithm has substantially lower storage requirements than the standard discontinuous Galerkin time-domain method when applied to meshes with a large number of curvilinear elements. An analytical energy stability analysis is summarized and some experimental results show that the novel method does not strongly impact accuracy.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"76 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":"124496150","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: 22
Sub-wavelength near field imaging using a cross polarised slot with wire insert 亚波长近场成像使用交叉极化槽与电线插入
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637171
T. Pochiraju, O. Malyuskin, V. Fusco
{"title":"Sub-wavelength near field imaging using a cross polarised slot with wire insert","authors":"T. Pochiraju, O. Malyuskin, V. Fusco","doi":"10.1109/URSI-EMTS.2010.5637171","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637171","url":null,"abstract":"In this paper we study sub-wavelength imaging by a new type of probe comprising a single cross polarized slot cut into a metal plate which has a wire inserted along its length. Using this arrangement we show by numerical simulation and experimentally that the transmitted near field can be enhanced up to 25dB with respect to the unloaded slot transmission. Moreover, superior near field squeezing results in 0.14 λ FWHM at 0.1λ distance from the slot. The arrangement yields image resolution capability of better than λ/4 at distance between 0.1λ and 0.2λ from the slot.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"37 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":"124988984","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
FDTD analysis of a planar spiral antennas for the ground penetrating radar 探地雷达平面螺旋天线的时域有限差分分析
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637026
Yiwei He, Y. Akizuki
{"title":"FDTD analysis of a planar spiral antennas for the ground penetrating radar","authors":"Yiwei He, Y. Akizuki","doi":"10.1109/URSI-EMTS.2010.5637026","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637026","url":null,"abstract":"In this paper, the planar spiral antennas for the ground penetrating radar (GPR) were calculated by using FDTD method. The frequency characteristics of the impedance ware discussed by changing the expansion angle of the planar element and the winding angle of the spiral. It was observed that a wide-band characteristics can be realized by a careful design of the antenna shape. Because the transient response of a GPR antenna is very important, the transient radiated electromagnetic wave was also investigated.","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":"130568431","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
Spherical-multipole based time-domain near-field to near-field transformation 基于球多极子的时域近场到近场变换
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637254
L. Klinkenbusch
{"title":"Spherical-multipole based time-domain near-field to near-field transformation","authors":"L. Klinkenbusch","doi":"10.1109/URSI-EMTS.2010.5637254","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637254","url":null,"abstract":"A spherical-multipole based approach is introduced to efficiently obtain the time-domain near- and far-field of any arbitrary localized current or equivalent-current source distribution. The method is based on the Fourier transform of the frequency-domain spherical-multipole expansion and on a finite expansion of the spherical Hankel function of the 2nd kind. It leads to a time-domain spherical-multipole expansion valid in the free space outside a minimum sphere containing all electromagnetic sources. By means of new recurrence relations the additional time-domain multipole amplitudes needed for the complete representation of the near field can be very efficiently calculated from the time-domain amplitudes dominant in the far field. The latter can be obtained by a recently proposed spherical-multipole based time-domain near-field to far-field algorithm which is particularly suited for FDTD.","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":"128914630","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
On the use of high-frequency asymptotic concepts for the development of efficient adaptive numerical integration algorithms 利用高频渐近概念开发高效的自适应数值积分算法
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637311
G. Carluccio, M. Albani
{"title":"On the use of high-frequency asymptotic concepts for the development of efficient adaptive numerical integration algorithms","authors":"G. Carluccio, M. Albani","doi":"10.1109/URSI-EMTS.2010.5637311","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637311","url":null,"abstract":"The possibility of reducing the sampling point density in the numerical evaluation of radiation integrals is discussed by resorting to asymptotic high-frequency technique concepts. It is shown that the numerical evaluation of the radiation integrals becomes computationally more efficient by introducing an adaptive sampling. By this approach the number of sampling points results drastically smaller than the standard Nyquist sampling rate.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"48 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":"125615604","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
Optimized design of a compact low-cost 4 element microstrip antenna array for WLAN 一种用于WLAN的紧凑低成本4元微带天线阵列的优化设计
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637167
Zhongkun Ma, V. Volski, G. Vandenbosch
{"title":"Optimized design of a compact low-cost 4 element microstrip antenna array for WLAN","authors":"Zhongkun Ma, V. Volski, G. Vandenbosch","doi":"10.1109/URSI-EMTS.2010.5637167","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637167","url":null,"abstract":"An innovative 4 element array topology of microstrip E shaped patches for use in WLAN applications is revisited and optimized by a novel Particle Swarm Optimization (PSO) implementation. This optimiser is capable to operate with a reduced number of cost function evaluations, since all evaluated antenna configurations and corresponding cost function values are saved. During the PSO optimization process, the fitness of the particle is evaluated by a full wave solver based on the moment of method. The used cost functions are constructed using s-parameters and the array gain in order to achieve the optimal performance. The operating frequency range is from 3.4 to 3.8 GHz and the gain of the array is more than 13 dB. The main beam direction is normal to the ground plane. Finally CST EM Studio is used to validate the global best antenna candidate structure.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"192 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":"116521754","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
Preconditioning iterative MLFMA solutions of integral equations 积分方程的预处理迭代MLFMA解
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637219
L. Gurel, T. Malas, O. Ergul
{"title":"Preconditioning iterative MLFMA solutions of integral equations","authors":"L. Gurel, T. Malas, O. Ergul","doi":"10.1109/URSI-EMTS.2010.5637219","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637219","url":null,"abstract":"The multilevel fast multipole algorithm (MLFMA) is a powerful method that enables iterative solutions of electromagnetics problems with low complexity. Iterative solvers, however, are not robust for three-dimensional complex real-life problems unless suitable preconditioners are used. In this paper, we present our efforts to devise effective preconditioners for MLFMA solutions of difficult electromagnetics problems involving both conductors and dielectrics.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"15 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":"125495135","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
Validation of ray optics capability to analyze the transfer behavior of bent optical slab waveguides 弯曲光平板波导传输特性的射线光学性能验证
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5636993
M. Stallein, B. Bandlow, R. Schuhmann
{"title":"Validation of ray optics capability to analyze the transfer behavior of bent optical slab waveguides","authors":"M. Stallein, B. Bandlow, R. Schuhmann","doi":"10.1109/URSI-EMTS.2010.5636993","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5636993","url":null,"abstract":"Integrated optical waveguides on PCB level are a promising technology to enhance data transfer rates. For minimal tolerance requirements these waveguides are multimodal, accordingly ray optical methods are used to analyze the transfer behavior. In this context the limits of ray optical methods are not well-known. It is the aim of this work to validate these methods by comparison with a wave analysis of bent dielectric slab waveguides. This analysis uses quasi-guided modes that are appropriate to simulate the optical power flow after passing a 90° bend. The fields of a Gaussian beam serve as reference source.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"20 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":"126739137","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
Performance considerations for automotive antenna equipment in vehicle-to-vehicle communications 车对车通信中汽车天线设备的性能考虑
2010 URSI International Symposium on Electromagnetic Theory Pub Date : 2010-11-15 DOI: 10.1109/URSI-EMTS.2010.5637361
O. Klemp
{"title":"Performance considerations for automotive antenna equipment in vehicle-to-vehicle communications","authors":"O. Klemp","doi":"10.1109/URSI-EMTS.2010.5637361","DOIUrl":"https://doi.org/10.1109/URSI-EMTS.2010.5637361","url":null,"abstract":"Vehicle-to-vehicle (V2V) communications systems focus on the improvement of driver safety and traffic efficiency using the recently designated frequency bands in the 5.9GHz range in Europe. Due to the time-frequency selective fading behaviour of the vehicular communication channel, antenna-related effects impacted by the vehicular mounting position and mutual coupling play an integral role in the performance of V2V communications. This paper focuses on the analysis of characteristic antenna effects that are subject to vehicular mounting. Example multi-element antenna (MEA) topologies are considered to improve the reliability of the wireless link by diversity combining in order to meet the stringent requirements of real-time communications.","PeriodicalId":404116,"journal":{"name":"2010 URSI International Symposium on Electromagnetic Theory","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120857229","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: 33
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