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

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Fullwave analysis of coplanar asymmetrical stripline, with application in guided-wave optical devices 共面非对称带状线的全波分析及其在导波光学器件中的应用
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509613
P.B. Harboe, J. R. Souza
{"title":"Fullwave analysis of coplanar asymmetrical stripline, with application in guided-wave optical devices","authors":"P.B. Harboe, J. R. Souza","doi":"10.1109/SBMOMO.1995.509613","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509613","url":null,"abstract":"The method of lines (MoL) is employed for a fullwave analysis of the propagation characteristics of lossless, coplanar asymmetrical striplines, considering conductor-backed and suspended substrate configurations. The variation of the effective dielectric constant and characteristic impedance with frequency and dimensions is investigated. The results obtained find application in guided-wave optical devices.","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":"114899197","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
A single six-port reflectometer measures the scattering parameters of two-port microwave devices 单六端口反射计测量两端口微波器件的散射参数
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509698
A. D. de Oliveira, S.P.X. Neto
{"title":"A single six-port reflectometer measures the scattering parameters of two-port microwave devices","authors":"A. D. de Oliveira, S.P.X. Neto","doi":"10.1109/SBMOMO.1995.509698","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509698","url":null,"abstract":"A single six-port reflectometer configuration is proposed to measure the four scattering parameters of two-port microwave devices. In order to determine the transmission coefficients, only one calibration standard and three measurements are required to complete the calibration procedure. Furthermore, s/sub 12/ and s/sub 21/ can be measured without reversing the device under test.","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":"114745228","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
Trains of bright solitons in birefringent fibres 双折射纤维中的亮孤子序列
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509612
H. Hernández-Figueroa, K. Loh, F. Fernández
{"title":"Trains of bright solitons in birefringent fibres","authors":"H. Hernández-Figueroa, K. Loh, F. Fernández","doi":"10.1109/SBMOMO.1995.509612","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509612","url":null,"abstract":"A computational study of the propagation stability of trains of bright solitons in monomode birefringent fibres is presented for the first time. Several decisive operational conditions are established. These may be used to optimise the propagation distance and bit rate capacity of an optical-soliton-based transmission system.","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":"127250168","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
Techniques to increase the spectrum efficiency of high capacity digital radios 提高高容量数字无线电频谱效率的技术
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509593
A.L.M. Malta, L. Barbieri
{"title":"Techniques to increase the spectrum efficiency of high capacity digital radios","authors":"A.L.M. Malta, L. Barbieri","doi":"10.1109/SBMOMO.1995.509593","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509593","url":null,"abstract":"This paper presents the research on digital radio communications designed to increase the transmission capacity, i.e., spectral efficiency (bits/s/Hz), as well as the necessary requirements and limitations imposed by these systems. An overview of this evolution, which led to an efficient high capacity transmission is presented and some countermeasures and transmission techniques, like frequency reuse, are also analyzed. Performance results, evaluated at Vimercate (Milan) and in some experimental links in Italy, demonstrating the improvements of these techniques are presented and discussed.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"64 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":"127137155","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
Microwave phase conjugation using arrays of nonlinear optically pumped devices 使用非线性光泵浦器件阵列的微波相位共轭
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509736
Y. Chang, D. Scott, H. Fetterman
{"title":"Microwave phase conjugation using arrays of nonlinear optically pumped devices","authors":"Y. Chang, D. Scott, H. Fetterman","doi":"10.1109/SBMOMO.1995.509736","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509736","url":null,"abstract":"Phase conjugation is a technique for reversing both the direction of propagation and the overall phase factor of an incoming wave. Up to date, most developments have concentrated on the optical regime due to the availability of nonlinear materials and power density restrictions. The extension of phase conjugation techniques to microwave frequencies has been explored using mixing elements with antennas [Cutler et al., 1963]. In this work, we report the use of optical signals as carriers of the microwave pump signal. This optical injection technique is the key to making simple, viable, low cost microwave phase conjugation arrays and nonlinear microwave surfaces.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"15 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":"126554627","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
Active microstrip array for satellite communication applications 用于卫星通信的有源微带阵列
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509691
Pawel Kabacik
{"title":"Active microstrip array for satellite communication applications","authors":"Pawel Kabacik","doi":"10.1109/SBMOMO.1995.509691","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509691","url":null,"abstract":"In this paper two microstrip arrays designed manufactured and tested for the needs of DBS signal reception in the X-band are presented. The TPA-256 antenna was a passive array and the TPA-256A antenna was an active one. TPA-256 and TPA-256A differed in their beamforming networks (BFN)-BFN of the TPA-256A array contained two microwave low noise amplifiers (LNA) to increase antenna sensitivity. The contribution includes theoretical and experimental results. Consideration is also given to reduction of a feeding network spurious radiation in microstrip arrays.","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":"124446074","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
The mutual coupling effect on the input impedance and radiation pattern of Yagi antenna in an array environment 阵列环境中互耦对八木天线输入阻抗和辐射方向图的影响
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509641
K. P. Ray, J.V. Chande, S. Damle
{"title":"The mutual coupling effect on the input impedance and radiation pattern of Yagi antenna in an array environment","authors":"K. P. Ray, J.V. Chande, S. Damle","doi":"10.1109/SBMOMO.1995.509641","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509641","url":null,"abstract":"The classical dipole theory has been extended to determine the mutual coupling effect on the parameters of the Yagi-Uda antenna in the array environment. The approach is very simple and useful in designing a Yagi antenna array and takes a shorter computer time as compared to the commonly used numerical technique of the method of moments. Experiments which were carried out to validate the theoretical results, show very good agreement.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"228 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":"123064124","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
Application of band-limited functions to the analysis of axially symmetric reflectors 带限函数在轴对称反射器分析中的应用
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509690
F. Teixeira, J. A. Bergmann
{"title":"Application of band-limited functions to the analysis of axially symmetric reflectors","authors":"F. Teixeira, J. A. Bergmann","doi":"10.1109/SBMOMO.1995.509690","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509690","url":null,"abstract":"A band-limited set of basis functions is employed, in a 3-D situation, to reduce the spatial-sample count associated with the method of moments (MoM) procedure. Results obtained from modelling axially symmetric reflectors, using variable spatial sample counts, are compared with ones derived from other classes of basis functions. The comparison evidences a superior computational performance (CPU time and memory requirements) of the proposed scheme in this context.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"50 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":"121555553","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
Comprehensive characterization of flip chip contacting methods for microwave and optoelectronic applications 微波和光电子应用倒装芯片接触方法的综合表征
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509643
A. Koschel, S. Cyrusian
{"title":"Comprehensive characterization of flip chip contacting methods for microwave and optoelectronic applications","authors":"A. Koschel, S. Cyrusian","doi":"10.1109/SBMOMO.1995.509643","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509643","url":null,"abstract":"Applying state of the art numerical simulation techniques, we have investigated relevant aspects of flip chip contacting methods, which are essential for RF/microwave and optoelectronic applications. An overview of commonly used flip chip mounting methods is given. The electrical properties of flip chip contacts up to millimeter wave frequencies are analyzed. Thermal concepts and mechanical reliability aspects are examined with regard to different bump materials and bump heights. The effect of self-alignment, which is important for optoelectronic devices is explained. Optimization possibilities and design rules are derived. We emphasize the advantages of flip chip technique for RF/microwave and optoelectronic 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":"130458276","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
Millimeter radio astronomical research: acousto-optic spectrometer device and measurement uncertainties 毫米波射电天文研究:声光光谱仪装置与测量不确定度
Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Pub Date : 1995-07-24 DOI: 10.1109/SBMOMO.1995.509655
G. M. Pacheco, E. Scalise
{"title":"Millimeter radio astronomical research: acousto-optic spectrometer device and measurement uncertainties","authors":"G. M. Pacheco, E. Scalise","doi":"10.1109/SBMOMO.1995.509655","DOIUrl":"https://doi.org/10.1109/SBMOMO.1995.509655","url":null,"abstract":"To overcome the limits imposed by acoustic attenuation and velocity, a low cost acousto-electro-optic interaction configuration with high channel number possibilities is proposed. From the turbulence and temperature effects on the measurement uncertainties, the authors establish the relative importance of those two parameters for radio astronomical observations at millimeter wavelengths.","PeriodicalId":225072,"journal":{"name":"Proceedings of 1995 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference","volume":"16 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":"127625802","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
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