发布求助
文献互助 智能选刊 最新文献

IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.最新文献

筛选
英文 中文
Dipole radiation in the presence of a planar unidirectionally conducting screen 平面单向导电屏存在下的偶极子辐射
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469728
B. Jiang
{"title":"Dipole radiation in the presence of a planar unidirectionally conducting screen","authors":"B. Jiang","doi":"10.1109/WCACEM.2005.1469728","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469728","url":null,"abstract":"The reflecting and transmitting effects of the planar unidirectionally conducting screen on electromagnetic fields are discussed in this paper. The source of the fields is an elementary electric dipole located at front of the screen and oriented arbitrarily. With the help of spectral-domain approach and Weyl's formulation, the electric field is first expressed in accurate and elementary functions. The obtained representations retain the following information for describing the electromagnetic properties of the screen. First, for dipole oriented along the wire elements, the reflected electric field is identified with the image fields and the transmitted field vanishes (the screen acts like a perfectly electrically conducting plane). Secondly, for dipole perpendicular to the wire elements, the reflected fields can be considered as arising from the images involving dipole and transmission-line source oriented in the conducting direction of screen, while the transmitted field is interpreted as the contribution of the image transmission-line source. In addition, the related surface waves which are also placed on some attentions in the paper.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134095807","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
Nested multigrid finite element analyses of eddy current losses in power transformers 电力变压器涡流损耗的嵌套多网格有限元分析
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469678
E. Schmidt, J. Schoberl, P. Hamberger
{"title":"Nested multigrid finite element analyses of eddy current losses in power transformers","authors":"E. Schmidt, J. Schoberl, P. Hamberger","doi":"10.1109/WCACEM.2005.1469678","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469678","url":null,"abstract":"The distribution of eddy currents in the core clamping parts and the tank wall of power transformers is obviously different between measurements of load losses and normal operational conditions. Thus, the calculation of these losses shows the regions of possible hot-spot temperatures with normal operational conditions. The presented analysis method uses 3D nonlinear time-harmonic finite element analyses with a nested multigrid solver. Consequently, the occurring short calculation times allow to take into account for ambitious technical specifications and individual customer demands.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134101637","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, design and fabrication of centimeter-wave dielectric Fresnel zone plate lens and reflector 厘米波介质菲涅耳带板透镜和反射镜的分析、设计与制造
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1051/epjap:2005077
A. Mahmoudi
{"title":"Analysis, design and fabrication of centimeter-wave dielectric Fresnel zone plate lens and reflector","authors":"A. Mahmoudi","doi":"10.1051/epjap:2005077","DOIUrl":"https://doi.org/10.1051/epjap:2005077","url":null,"abstract":"Fresnel lens has a long history in optics. This concept at non-optical wavelengths is also applicable. In this paper we report design and fabrication of a half and quarter wave dielectric Fresnel lens made of Plexiglas, and a Fresnel reflector at 11.1 GHz frequency. We made two lenses and one reflector at same frequency and compare their gain and radiation pattern to simulated results. Some methods for better focusing action are introduced.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131585219","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
Chip-package codesign of receiver front end modules for RF/wireless applications 射频/无线应用接收机前端模块的芯片封装协同设计
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469698
Y. Amin, H. Tenhunen, H. Jamal, Lirong Zheng, X. Duo
{"title":"Chip-package codesign of receiver front end modules for RF/wireless applications","authors":"Y. Amin, H. Tenhunen, H. Jamal, Lirong Zheng, X. Duo","doi":"10.1109/WCACEM.2005.1469698","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469698","url":null,"abstract":"In this document, we have shown the advantages of SoP using MCM-D technology as a solution for producing integrated parts for use in RF systems offers many significant advantages over more traditional technologies. In particular the size reductions and performance improvements possible allow product developers to meet more closely the requirements of the market place. The realization of complete receiver front end has demonstrated clearly the potential of this technology to integrate complex RF functions into small, single modules. This technology is demonstrated as a high performance and low cost packaging technology and will be a competitive technology in future RF/wireless SoP application.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128955472","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
Performance analysis of adaptive interleaving for MIMO-OFDM systems MIMO-OFDM系统自适应交织性能分析
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469529
Fengye Hu, Shuxun Wang, Yang Liu
{"title":"Performance analysis of adaptive interleaving for MIMO-OFDM systems","authors":"Fengye Hu, Shuxun Wang, Yang Liu","doi":"10.1109/WCACEM.2005.1469529","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469529","url":null,"abstract":"In this paper, an adaptive interleaving scheme for multiple-input and multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems is proposed. The scheme could better exploit the instantaneous channel variation by rearranging the transmitted symbols according to the quasi-instantaneous channel SNR of the OFDM frame. The purpose is to break up a long burst channel error so that overall bit error probability is reduced. The upper bound of pair wise error probability (PEB) of the MIMO-OFDM systems is investigated. The code gain and diversity gain of the proposed scheme are given. The result shows that the major factor affecting performance of the proposed scheme is SNR, channel order and the number of receive antenna. Extensive simulations show that significant SNR can be obtained with the proposed scheme and the MIMO-OFDM case has a performance improvement over the single antenna case. Compared with block interleaving, for 2Tx-2Rx case at a BER of 10/sup -2/, adaptive interleaving offers a 5 dB improvement.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133518300","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
Frequency reconfigurable CPW-fed hybrid folded slot/slot dipole antenna 频率可重构cpw馈电混合折叠槽/槽偶极子天线
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469653
G. Huff, J. Bernhard
{"title":"Frequency reconfigurable CPW-fed hybrid folded slot/slot dipole antenna","authors":"G. Huff, J. Bernhard","doi":"10.1109/WCACEM.2005.1469653","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469653","url":null,"abstract":"This work presents the design of a frequency reconfigurable probe fed finite-ground co-planar waveguide (FGCPW) fed hybrid dual (or twin) slot dipole-folded slot antenna that reconfigures in frequency to enhance the overall bandwidth of the structure. The operation of the antenna is a function of the combined resonant behavior of the two structures as it switches between configurations. In the current configuration, two surface mount switches, hard wired for proof of concept, are used to switch between the two configurations. This approach to reconfiguration (demonstrated on a basic geometry) may be implemented on more complex antenna designs to further enhance their operation.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133109052","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: 7
Adaptive cross approximation for MOM matrix fill for PC problem sizes to 157000 unknowns 自适应交叉逼近MOM矩阵填充PC问题大小为157000个未知数
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469694
J. Shaeffer, F. Canning
{"title":"Adaptive cross approximation for MOM matrix fill for PC problem sizes to 157000 unknowns","authors":"J. Shaeffer, F. Canning","doi":"10.1109/WCACEM.2005.1469694","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469694","url":null,"abstract":"Recent work on sparse MOM codes for PC applications has reduced LU matrix factorization time to significantly less than matrix fill for problem unknowns approaching 200,000. This paper reports on the use and results of applying the recently developed adaptive cross approximation for significantly reducing MOM matrix fill time. Results suggest that when problem sizes approach 500,000 unknowns, matrix fill can be reduced from 100 to 10 hours on a modern PC.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124243132","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
Effect of road undulation on the propagation characteristics of inter-vehicle communications in the 60 GHz band 道路波动对60 GHz频段车际通信传播特性的影响
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469715
A. Yamamoto, K. Ogawa, T. Horimatsu, K. Sato, M. Fujise
{"title":"Effect of road undulation on the propagation characteristics of inter-vehicle communications in the 60 GHz band","authors":"A. Yamamoto, K. Ogawa, T. Horimatsu, K. Sato, M. Fujise","doi":"10.1109/WCACEM.2005.1469715","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469715","url":null,"abstract":"This paper presents the effect of undulations in the road on the propagation characteristics in the LOS case for IVC in the 60 GHz band The received power is calculated by the 2-wave model, in which variations in the amplitude and phase shift of the road-reflected wave caused by road undulation are taken into consideration. The effectiveness of the proposed model was confirmed by a propagation test between vehicles with fixed positions. Finally, the received power when the communicating vehicles move on an undulating road is estimated using the model and this is validated by measurement.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114617506","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
On the diversity gain using a Butler matrix in fading MIMO environments 基于Butler矩阵的衰落MIMO分集增益研究
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469629
A. Grau, J. Romeu, F. De Flaviis
{"title":"On the diversity gain using a Butler matrix in fading MIMO environments","authors":"A. Grau, J. Romeu, F. De Flaviis","doi":"10.1109/WCACEM.2005.1469629","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469629","url":null,"abstract":"This paper aims to present the benefits of using a Butler matrix network in different scenarios of a fading MIMO environment and describes the design conditions for the antenna structure required to preserve the MIMO system performance and take full advantage of the antenna diversity. Simulations on the selection diversity gain have been carried out using a two-ring MIMO model for indoor and outdoor cells. A Butler matrix is connected to an array of four antennas and it is shown to be a simple but powerful solution in medium and low multipath environments.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116953058","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: 7
Full wave analysis of RF signal attenuation in a lossy cave using a high order time domain vector finite element method 用高阶时域矢量有限元法分析有耗洞穴中射频信号衰减的全波
IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005. Pub Date : 2005-04-03 DOI: 10.1109/WCACEM.2005.1469674
J. Pingenot, R. Rieben, D. White
{"title":"Full wave analysis of RF signal attenuation in a lossy cave using a high order time domain vector finite element method","authors":"J. Pingenot, R. Rieben, D. White","doi":"10.1109/WCACEM.2005.1469674","DOIUrl":"https://doi.org/10.1109/WCACEM.2005.1469674","url":null,"abstract":"We present a computational study of signal propagation and attenuation of a 200 MHz dipole antenna in a cave environment. The cave is modeled as a straight and lossy random rough wall. To simulate a broad frequency band, the full wave Maxwell equations are solved directly in the time domain via a high order vector finite element discretization using the massively parallel CEM code EMSolve. The simulation is performed for a series of random meshes in order to generate statistical data for the propagation and attenuation properties of the cave environment. Results for the power spectral density and phase of the electric field vector components are presented and discussed.","PeriodicalId":368249,"journal":{"name":"IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005.","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116974495","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
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
小红书