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Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference最新文献

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Fabry-Perot intensity modulator for hybrid lidar-radar applications 用于混合激光雷达的法布里-珀罗强度调制器
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509707
A. Vieira, L. Mullen, P. Herczfeld, V. Contarino
{"title":"Fabry-Perot intensity modulator for hybrid lidar-radar applications","authors":"A. Vieira, L. Mullen, P. Herczfeld, V. Contarino","doi":"10.1109/SBMOMO.1995.509707","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509707","url":null,"abstract":"To improve the detection sensitivity of aerial light detection and ranging (lidar), a hybrid lidar-radar detection scheme has been studied. Preliminary laboratory experiments are promising, but the full-scale realization of this novel system requires the development of high speed modulators for high power, blue-green laser pulses. This paper details experimental and analytical studies performed on a Fabry-Perot modulator suitable for lidar-radar applications.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131082738","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
Suspended microstrip patch resonators on magnetized ferrites 磁化铁氧体上悬浮微带贴片谐振器
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509631
J.R.S. Oliveira, A. D’assunção, C. da Rocha
{"title":"Suspended microstrip patch resonators on magnetized ferrites","authors":"J.R.S. Oliveira, A. D’assunção, C. da Rocha","doi":"10.1109/SBMOMO.1995.509631","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509631","url":null,"abstract":"Lately, a growing interest in the development of microstrip antennas on magnetized ferrites has been observed, because they offer magnetic tuning and scanning capabilities. A suspended microstrip patch resonator on a magnetized ferrite offers another tuning possibility, which is obtained by varying the distance from the ground plane to the ferrimagnetic layer. The authors investigate the tuning capability of suspended microstrip patch resonators by using a combination of the Hertz potentials and the moment methods. Curves of the resonant frequency and the Q factor are presented as functions of the suspended microstrip patch resonator geometry.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"91 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131206003","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
Some nonlinear integrated optical devices 一些非线性集成光学器件
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509715
M. Bertolotti, C. Sibilia, F. Garzia
{"title":"Some nonlinear integrated optical devices","authors":"M. Bertolotti, C. Sibilia, F. Garzia","doi":"10.1109/SBMOMO.1995.509715","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509715","url":null,"abstract":"Nonlinear integrated optical devices have been widely investigated in the last decade due to the possibility of realising all optical devices. Two classes of nonlinear devices are discussed: directional couplers as spatial filtering and as wavelength filtering devices, and spatial selection of the beam, by the help of spatial soliton interaction in the waveguide. These devices are analyzed assuming a third order nonlinear material. A discussion of the cubic behaviour of a second order nonlinear material is also included, considering in particular the wavelength filtering properties of the directional coupler.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"403 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133848645","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
The six-port reflectometer: choosing a calibration method 六端口反射计:选择校准方法
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509699
A. D. de Oliveira, P. Lima
{"title":"The six-port reflectometer: choosing a calibration method","authors":"A. D. de Oliveira, P. Lima","doi":"10.1109/SBMOMO.1995.509699","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509699","url":null,"abstract":"This paper presents a discussion on four known and frequently employed six-port reflectometer calibration procedures, namely the ones by Glenn Engen (1978), Ghannouchi et al. (1988), Sunil Judah (1985) and Cong-Zhen Qian (1985). The desired features usually sought in a calibration method, like accuracy, ease of calibration and low cost, among others, are discussed for each method above. The procedure introduced by Engen can lead to the determination of the scattering parameters of microwave devices from power measurements only, without the complex circuitry of the heterodyne network analyzer.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134622968","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
Recent developments in finite element analysis of optical and microwave devices 光学和微波器件有限元分析的最新进展
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509668
F. Fernández
{"title":"Recent developments in finite element analysis of optical and microwave devices","authors":"F. Fernández","doi":"10.1109/SBMOMO.1995.509668","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509668","url":null,"abstract":"This paper summarizes and illustrates some of the current forms of using the finite element method in the analysis of microwave and optical structures. Modal and propagation methods are reviewed. An accurate and efficient method for the vectorial modal analysis of waveguides which also permits the treatment of open waveguides including leakage is described and illustrated with examples of complex modes in microwaves and a leaky ARROW structure in optics. The use of finite elements in propagation methods is also briefly described and illustrated.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131030356","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
Radiometric measurements of the effective rain height in the tropics 热带地区有效雨高的辐射测量
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509673
L. S. Silva Mello, M. Pontes, R. Souza
{"title":"Radiometric measurements of the effective rain height in the tropics","authors":"L. S. Silva Mello, M. Pontes, R. Souza","doi":"10.1109/SBMOMO.1995.509673","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509673","url":null,"abstract":"This paper presents results of an investigation of the quasi-instantaneous and statistical behaviour of the effective rain height for rain attenuation (at 12 GHz) in satellite links. The results are derived from point rainfall rate and radiometric attenuation measurements at two sites in the tropical and equatorial regions of Brazil.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131092302","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
Statistical estimation of the complex reflection coefficient of microwave loads using a multiport reflectometer 用多端口反射计统计估计微波载荷的复反射系数
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509701
A. L’vov, A. A. Morzhakov
{"title":"Statistical estimation of the complex reflection coefficient of microwave loads using a multiport reflectometer","authors":"A. L’vov, A. A. Morzhakov","doi":"10.1109/SBMOMO.1995.509701","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509701","url":null,"abstract":"A new universal technique of microwave network complex reflection coefficient measurement based on the solution of the (N+2)-port equations by the maximum likelihood method is proposed. The expressions for the measurement errors are obtained in a linear approximation. It is shown that the measurement accuracy grows with the increase in the number of measurement ports.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132620228","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
Interactive multimedia lessons for education 互动式多媒体教育课程
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.511020
M. Iskander, J. Catten, A. Jones, R. Jameson, A. Balcells
{"title":"Interactive multimedia lessons for education","authors":"M. Iskander, J. Catten, A. Jones, R. Jameson, A. Balcells","doi":"10.1109/SBMOMO.1995.511020","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.511020","url":null,"abstract":"The development of interactive multimedia modules for education presents a significant opportunity to modernize engineering, science and math curricula and improve the effectiveness of teaching and learning of these subjects. We review the various hardware and software components required to develop multimedia lessons and discuss the role of each component in the structure of the multimedia module. Several examples of multimedia products available from the CAEME Center are demonstrated. This includes the extensive electromagnetics software published in Volumes I and II of the CAEME books, the Calculus Castle, the Physics Museum; and interactive multimedia games such as \"Tic-Tac-Toe\" in calculus and \"Frantic Physics\", a space-invaders-type review game in physics. It is shown that although extensive resources and expertise are often needed to develop these modules, the technology is readily available and educators are encouraged to take advantage of these available opportunities to reform engineering, science, and math education.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114812633","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: 21
Wide flare angle Ku band axially corrugated horn for offset VSAT antennas 宽频角Ku波段轴向波纹角偏移VSAT天线
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509689
M. Branco, E. Abud Filho, L.C. da Silvo
{"title":"Wide flare angle Ku band axially corrugated horn for offset VSAT antennas","authors":"M. Branco, E. Abud Filho, L.C. da Silvo","doi":"10.1109/SBMOMO.1995.509689","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509689","url":null,"abstract":"A wide semi-flare angle linearly tapered corrugated horn, with eight axial slots, has been developed for use in single offset antennas for VSAT earth stations with low cross-polarization peak levels from 10.7 GHz to 14.8 GHz. Mode-matching techniques have been successfully applied to the horn return loss and radiation pattern prediction and the critical effects of the ridges and output flange thicknesses have been verified.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"300 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114950483","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 finite element-boundary integral analysis of electromagnetic scattering by a buried dielectric object 埋藏介质物体电磁散射的有限元边界积分分析
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509732
R. Coccioli, G. Lombardi, G. Pelosi, G. Manara
{"title":"A finite element-boundary integral analysis of electromagnetic scattering by a buried dielectric object","authors":"R. Coccioli, G. Lombardi, G. Pelosi, G. Manara","doi":"10.1109/SBMOMO.1995.509732","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509732","url":null,"abstract":"The application of a hybrid finite element-boundary integral (FE-BI) technique to the scattering from a dielectric cylinder buried in a dielectric half-space is presented. The domain in which FEM has to be applied is limited by a fictitious surface /spl Gamma/. The scattered field distribution is numerically evaluated by imposing the proper boundary conditions at the surface /spl Gamma/ and by using a suitable Green's function representation which allows one to take into account the presence of the interface.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114997312","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
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