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Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)最新文献

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Electromagnetic simulation of a test board to support system in package testing 电磁仿真测试板支持系统的封装测试
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244909
G. Surbeck, C. Jackson
{"title":"Electromagnetic simulation of a test board to support system in package testing","authors":"G. Surbeck, C. Jackson","doi":"10.1109/IMOC.2003.1244909","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244909","url":null,"abstract":"A model of a printed circuit board used to test an RF receiver system in package (SiP) is presented. A single 3D EM model can be created for the SMA, printed circuit test board, and package socket mount. The model gives a superior match to measured data compared to a lumped element equivalent circuit. The model provides a full two-port network where a direct measurement cannot be made.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133919080","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 double-sided suspended substrate microstrip lowpass filter 一种双面悬浮基板微带低通滤波器
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244825
S. Uysal
{"title":"A double-sided suspended substrate microstrip lowpass filter","authors":"S. Uysal","doi":"10.1109/IMOC.2003.1244825","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244825","url":null,"abstract":"A novel method of designing a stepped impedance lowpass filter which involves the use of suspended substrate microstrip technology, to improve filter performance as well as multilayering for reduction in size, is reported. This filter has the sharpest cutoff when compared with microstrip and conventional suspended substrate microstrip filters. The measured results for all three types are presented.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133134588","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
Second-order statistics for equal gain combining with arbitrary channels 等增益与任意信道组合的二阶统计量
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244831
J. S. Santos Filho, M. Yacoub
{"title":"Second-order statistics for equal gain combining with arbitrary channels","authors":"J. S. Santos Filho, M. Yacoub","doi":"10.1109/IMOC.2003.1244831","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244831","url":null,"abstract":"This paper presents two general unified approaches for calculating the level crossing rate and the average fade duration of equal gain combining systems with a generic number of independent fading channels, having unequal mean signal powers and arbitrary fading conditions. Accordingly, exact PDF-based and Fourier-based expressions are obtained for both performance criteria. As for the fading condition, channels may differ in degree and model, including Nakagami-m and Rice distributions. Numerical examples reveal that power unbalance strongly deteriorates the combiner's performance, and may render the system performing worse than a non-diversity scheme. Effects of fading conditions are shown to be less influential in the performance, mainly at high signal levels.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"48 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114101669","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
Empirical all region current based PHEMT DC model 基于全区域电流的PHEMT直流经验模型
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244839
J. Gao, X. Li, H. Wang, G. Boeck
{"title":"Empirical all region current based PHEMT DC model","authors":"J. Gao, X. Li, H. Wang, G. Boeck","doi":"10.1109/IMOC.2003.1244839","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244839","url":null,"abstract":"This paper proposes an improved PHEMT DC model which covers high and low current applications, as well good agreement is obtained between simulated and measured results for a 0.25(1 /spl times/ 40) /spl mu/m double heterostructure PHEMT.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129615657","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
A 5.2 GHz tunable synchronous oscillator for IEEE 802.11a applications 用于IEEE 802.11a应用的5.2 GHz可调谐同步振荡器
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244849
P. Hellmuth, J. Bégueret, H. Lapuyade, O. Mazouffre, Y. Deval
{"title":"A 5.2 GHz tunable synchronous oscillator for IEEE 802.11a applications","authors":"P. Hellmuth, J. Bégueret, H. Lapuyade, O. Mazouffre, Y. Deval","doi":"10.1109/IMOC.2003.1244849","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244849","url":null,"abstract":"A low power 5.2 GHz Synchronous Oscillator (SO) is presented. This SO has been fully implemented in a 0.25 μm SiGe BiCMOS technology and is dedicated for 802.11a WLAN applications. The use of body effect provides a tunable oscillator in order to control the free running oscillation. Under 1.8 V supply and at 5.2 GHz, the core of the SO consumes 9 mW for a -114 dBc/Hz phase noise at 100 kHz from the carrier and offers 400 MHz synchronization bandwidth.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121666506","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
Displaced-axis-ellipse reflector antenna for spacecraft communications 航天器通信用位移轴椭圆反射天线
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244891
A. Prata, F. Moreira, L. Amaro
{"title":"Displaced-axis-ellipse reflector antenna for spacecraft communications","authors":"A. Prata, F. Moreira, L. Amaro","doi":"10.1109/IMOC.2003.1244891","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244891","url":null,"abstract":"This work discusses the electrical characteristics of axially-symmetric dual-reflector antenna systems based on the axially displaced ellipse (ADE) configuration, with emphasis on its application in compact high-gain high-efficiency spacecraft communication antennas. Relevant ADE electrical properties are compared with the corresponding characteristics of the Cassegrain geometry (a configuration commonly used in high-gain spacecraft applications). It is shown that the ADE is capable of operating efficiently with electric apertures considerably smaller than the Cassegrain geometry, an important feature for small spacecraft. To demonstrate the outstanding electric performance that can be expected from the ADE, the predicted and measured results of an X-band 1250 mm aperture diameter prototype are presented.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116340036","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
New frequency standard for optical telecommunications based on difference-frequency generation in PPLN waveguides 基于PPLN波导差频产生的光通信新频率标准
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244872
M. Sundheimer, P. Baldi
{"title":"New frequency standard for optical telecommunications based on difference-frequency generation in PPLN waveguides","authors":"M. Sundheimer, P. Baldi","doi":"10.1109/IMOC.2003.1244872","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244872","url":null,"abstract":"We propose a new frequency standard in the C-band at 192.0 THz (1561 nm) for optical telecommunications. This standard is based on difference-frequency generation (DFG) in a periodically-poled lithium niobate (PPLN) waveguide using a continuous-wave Nd:YAG laser at 1064.2 nm and a continuous-wave HeNe laser at 632.8 nm, allowing for a frequency standard at 1561 nm which is derived directly from two internationally-accepted primary standards. In preliminary experiments using unstabilized commercial lasers we generated tip to 0.2 /spl mu/W at 1561 nm using only 24 mW at 1064.2 nm (TM/sub 00/ mode) and 28 /spl mu/W at 632.8 nm (TM/sub 01/ mode). The maximum measured conversion efficiency was 4 % W/sup -1/cm/sup -2/. Much higher output powers and conversion efficiencies are expected with an optimized PPLN waveguide designed to allow mixing of only TM/sub 00/ modes, This is also, to our knowledge, the first demonstration of DFG using a HeNe laser.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127019650","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
THz-emitters based on ballistic transport in semiconductor nanostructures 半导体纳米结构中基于弹道输运的太赫兹发射器
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244833
S. Malzer, M. Eckardt, A. Schwanhausser, F. Renner, A. Friedrich, P. Pohl, D. Driscoll, M. Hanson, P. Kiesel, A. Gossard, G. Dohler
{"title":"THz-emitters based on ballistic transport in semiconductor nanostructures","authors":"S. Malzer, M. Eckardt, A. Schwanhausser, F. Renner, A. Friedrich, P. Pohl, D. Driscoll, M. Hanson, P. Kiesel, A. Gossard, G. Dohler","doi":"10.1109/IMOC.2003.1244833","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244833","url":null,"abstract":"A novel concept for THz-photomixers based on semiconductor nanostructures with strongly increased conversion efficiency is presented. In THz-photomixers, typically based on photoconductivity in \"low-temperature-grown-GaAs.\" (LT-GaAs), the performance is typically limited by the (very low) photoconductive gain and depends critically on an extremely short lifetime of photo-generated charge carriers in LT-GaAs. In contrast to those devices, in our photomixer the gain does not depend on the recombination lifetime but only on the transit time and on the path length of the photo-generated electrons within suitably designed p-i-n nanostructures, which both can be optimised for (primarily) ballistic transport. In addition, impedance matching to the attached antenna can be achieved.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128329720","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
EDFAs gain and noise figure dependence on the fiber length: comparison between L and C bands edfa增益和噪声系数与光纤长度的关系:L和C波段的比较
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244842
A. Rieznik, W. Arellano, G. Wiederhecker, T. Alegre, H. Fragnito
{"title":"EDFAs gain and noise figure dependence on the fiber length: comparison between L and C bands","authors":"A. Rieznik, W. Arellano, G. Wiederhecker, T. Alegre, H. Fragnito","doi":"10.1109/IMOC.2003.1244842","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244842","url":null,"abstract":"In this paper we perform a theoretical study via simulations of both, Cand L-EDFAs dependence on the fiber length. The model used in all the simulations results here introduced is the well-known modeling of erbium ions as a two level homogeneously broadened system. The propagation equations for the light, coupled with the rate equation for the excited state population of the erbium ions, are solved in both possible directions into the fiber. Numerical simulations give the gain and NF of the amplifier for any input signal and pump powers configuration.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134320160","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
Determination of ethanol content in gasoline: theory and experiment 汽油中乙醇含量的测定:理论与实验
Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678) Pub Date : 2003-11-17 DOI: 10.1109/IMOC.2003.1244884
E. Santos
{"title":"Determination of ethanol content in gasoline: theory and experiment","authors":"E. Santos","doi":"10.1109/IMOC.2003.1244884","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244884","url":null,"abstract":"Adulterated gasoline may cause problems to the car engine, may present health hazards, and causes losses of tax revenues by the government. Recently, with the deregulation of the Brazilian oil market, there has been rising concerns regarding the quality of Brazilian gasoline. According to ANP (Brazilian regulatory authority), the gasoline is being adulterated by adding a higher concentration of ethanol, or using hydrated ethanol, or adding foreign solvents. This work presents a portable electronic method for the determination of ethanol content in Brazilian gasoline.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131791034","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: 24
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