发布求助
文献互助 智能选刊 最新文献

1994 24th European Microwave Conference最新文献

筛选
英文 中文
On the Incompleteness of Integral Equation Formulations for Electro-Magnetic Field Computations 电磁场计算中积分方程公式的不完备性
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337270
W. Schroeder, I. Wolff
{"title":"On the Incompleteness of Integral Equation Formulations for Electro-Magnetic Field Computations","authors":"W. Schroeder, I. Wolff","doi":"10.1109/EUMA.1994.337270","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337270","url":null,"abstract":"It is shown that integral equation formulations for electromagnetic field problems which amount to compact operators (as found e.g. in boundary integral or spectral domain approaches) are incomplete problem specifications for purposes of numerical solution. They describe problems which are ill-posed in the sense of Hadamard. This difficulty becomes apparent after some implementation specific degree of problem complexity is reached. It is demonstrated that for electromagnetic field eigenvalue problems the consequence is a failure to detect any solution, except eventually spurious solutions if an inadequate discretization procedure is employed. It is concluded that integral equation formulations with compact operators must be accompanied by regularization conditions to yield a complete problem specification. Theoretical results are illustrated by numerical details from full-wave boundary integral equation analysis of a coplanar waveguide with conductors of finite thickness and finite conductivity.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121487985","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
Branch-Line Hybrid-Rings with Coupled-Lines 带耦合线的分支线混合环
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337290
I. Sakagami, T. Munehiro, Hiroyuki Tanaka, T. Itoh
{"title":"Branch-Line Hybrid-Rings with Coupled-Lines","authors":"I. Sakagami, T. Munehiro, Hiroyuki Tanaka, T. Itoh","doi":"10.1109/EUMA.1994.337290","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337290","url":null,"abstract":"A branch-line hybrid-ring is composed of four quarter-wavelength transmission lines, and hence occupies a large area on printed circuitboards because of its loop structure. In this paper, a branch-line hybrid-ring which includes microwave C sections is proposed for size reduction. The perfect input match and isolation can be attained at a center frequency as in a normal hybrid-ring. No practical differences are found in the frequency characteristics between the normal network and the proposed one.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127952517","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
Accuracy of the Simulation of V band MMICs Typical Microstrip Elements with CAD Programs 用CAD程序模拟V波段mmic典型微带元件的精度
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337359
J. Vaz, M. J. Rosário, J. C. Freire
{"title":"Accuracy of the Simulation of V band MMICs Typical Microstrip Elements with CAD Programs","authors":"J. Vaz, M. J. Rosário, J. C. Freire","doi":"10.1109/EUMA.1994.337359","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337359","url":null,"abstract":"In this paper a comparison of the simulation of MMICs typical microstrip elements, such as transmission lines, open rectangular stubs and radial stubs, with commercial CAD circuit and electromagnetic simulators with on-wafer measurements up to 70GHz, will be presented. Conclusions about the simulators accuracy and corrected models for each element will be presented.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128950683","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
Analysis of Multireflector Antenna Clusters by Spectral Methods 多反射面天线簇的光谱分析
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337322
V. Boria, M. Baquero, M. Ferrando
{"title":"Analysis of Multireflector Antenna Clusters by Spectral Methods","authors":"V. Boria, M. Baquero, M. Ferrando","doi":"10.1109/EUMA.1994.337322","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337322","url":null,"abstract":"This paper analyzes multireflector antennas making use of spectral domain techniques. The behaviour of the multireflector antenna is determined by means of a transference function that relates the plane wave spectrum of an incident signal on this antenna to the plane wave spectrum reflected by the structure. Multireflector antenna clusters that synthesize specific radiation patterns have also been undertaken. The paper allows us to generalize the identification of every reflecting object through a transference function that relates the incident spectrum to the reflected one. This will permit us to analyze reflection problems with multiple structures.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132470487","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
High-Frequency Circuit Model for the Incidence of Electromagnetic Waves on Hybrid Waveguide Structures 混合波导结构上电磁波入射的高频电路模型
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337221
D. De Zutter, F. Olyslager
{"title":"High-Frequency Circuit Model for the Incidence of Electromagnetic Waves on Hybrid Waveguide Structures","authors":"D. De Zutter, F. Olyslager","doi":"10.1109/EUMA.1994.337221","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337221","url":null,"abstract":"The purpose of this contribution is to show how an incident field impinging on a multiconductor transmission line (MTL) can be represented as a source term in a full-wave circuit model of that MTL. Results reported in literature (mainly for cables) are restricted to the quasi-TEM limit. Our approach allows one to determine up to which frequency the quasi-TEM limit is valid. As an example, we consider the case of a vertical electric dipole source above two coupled, perfectly conducting thick microstrips on top of a lossy substrate.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128337705","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
Trends of Research on Microwaves/Optics in Japan 日本微波/光学研究动态
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337209
M. Akaike
{"title":"Trends of Research on Microwaves/Optics in Japan","authors":"M. Akaike","doi":"10.1109/EUMA.1994.337209","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337209","url":null,"abstract":"Recent growing demand, both in quantity and quality, for communications triggers the communication technology to incorporate and integrate media of two different genre, i.e., microwaves and lightwaves (optics). Devices and systems utilizing both microwave and optical technologies are investigated. Recent research and development in this field are reviewed in this paper. Characteristics of radio and optical fibers are reviewed, and subcarrier multiplexing systems and opto-microwave devices are described.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134099225","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
The Discretized Mie - Formalism for Electromagnetic Scattering on Nonspherbcal Axisymmetric Particles in the Microwave Region 微波区非球轴对称粒子电磁散射的离散Mie -形式
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337385
T. Rother, K. Schmidt
{"title":"The Discretized Mie - Formalism for Electromagnetic Scattering on Nonspherbcal Axisymmetric Particles in the Microwave Region","authors":"T. Rother, K. Schmidt","doi":"10.1109/EUMA.1994.337385","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337385","url":null,"abstract":"A new formalism for studying electromagnetic scattering on nonspherical axisymmetric particles is presented. The main advantages of this formalism are the strong similarity to the well-known Mie theory, the simple convergence behaviour and the use of expansion functions that are better adapted to the nonspherical scatterer geometry than spherical harmonics. Numerical results for the scattering characteristics of an ellipsoid and a sphere in the microwave region will be given.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134144585","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
MMICs for 30/20GHz Space Equipments 用于30/20GHz空间设备的mmic
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337510
H. Buret, M. Hutbner, B. Rattay, A. Recly, C. Tronche
{"title":"MMICs for 30/20GHz Space Equipments","authors":"H. Buret, M. Hutbner, B. Rattay, A. Recly, C. Tronche","doi":"10.1109/EUMA.1994.337510","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337510","url":null,"abstract":"A set of MMICs at Ka-band including a 30GHz Low Noise Amplifier, a 30/ 20GHz Down-converting Mixer, a 20GHz Low Level Amplifier and a 20GHz Analog Attenuator has been designed at the LEMMIC1, manufactured and measured. Performances at the end of the first design cycle are in very good agreement with simulations.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134498567","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
A New 18.40 GHz Dual 6-Port Vector Network Analyzer 新型18.40 GHz双6端口矢量网络分析仪
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337328
J. Achkar
{"title":"A New 18.40 GHz Dual 6-Port Vector Network Analyzer","authors":"J. Achkar","doi":"10.1109/EUMA.1994.337328","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337328","url":null,"abstract":"A new 18-40 GHz coaxial dual 6-port vector network analyzer has been built with 2.92 mm precision connectors at the output test ports. The design of the 6-port reflectometer, as well as the characterization of the power diode detectors and the modified-calibration of the dual 6-port are discussed. Experimental results on a sliding short at 22 GHz are reported.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132961212","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
New simplified Active transverse dipole array design 新型简化有源横向偶极子阵列设计
1994 24th European Microwave Conference Pub Date : 1994-10-01 DOI: 10.1109/EUMA.1994.337362
J. Floc'h, L. Desclos
{"title":"New simplified Active transverse dipole array design","authors":"J. Floc'h, L. Desclos","doi":"10.1109/EUMA.1994.337362","DOIUrl":"https://doi.org/10.1109/EUMA.1994.337362","url":null,"abstract":"After several attemps on transverse dipole array design using numerical technique (MOM) a simple and reliable design method is derived. The method heart's is an intensive use of a database generated with a Moment Method. The basic topology is a series of transverse dipoles coupled electromagnetically to a microstrip line. Each array element is considered as an entity which is described as an equivalent circuit. This method allows a very simple interface with commercially available CAD softwares. As examples, two design of a six dipole linear array is presented. The first is a passive one showing a gain of 16 dB. The second one is the evolution of the first one as an active design showing 27.5 dB of gain at the center frequency of 10 GHz. In each of these designs, the method is shown realiable.","PeriodicalId":440371,"journal":{"name":"1994 24th European Microwave Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133700160","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