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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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Rectangular realizations of a new class of dual-mode microwave filters 一类新型双模微波滤波器的矩形实现
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.2003.1244822
P. Jarry, E. Kerhervé, O. Roquebrun, M. Guglielmi, D. Schmitt, J. Pham
{"title":"Rectangular realizations of a new class of dual-mode microwave filters","authors":"P. Jarry, E. Kerhervé, O. Roquebrun, M. Guglielmi, D. Schmitt, J. Pham","doi":"10.1109/IMOC.2003.1244822","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244822","url":null,"abstract":"In this paper, we give two rectangular realizations of a new structure able to improve an elliptic function. This structure overcomes the difficulties met when the electromagnetic analysis of a circular structure is performed. First, we describe a design procedure of this new type and two sets of experimental results are presented to illustrate the accuracy between theory and performance. This new configuration can create zeros at the right or left hand of the band. With a very powerful computational electromagnetic analysis, the design needs less tuning. To validate this new concept of filtering, we present the measurements of two TE/sub 10//TE/sub 30/ rectangular dual-mode filters.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"168 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":"125310890","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
Space qualified S-band transmitter for GPS data modulation for the Brazilian Technological Satellite 用于巴西技术卫星GPS数据调制的空间合格s波段发射机
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.2003.1244913
I. Tosetto, R. Araujo, C. Gonçalves, J. A. Rodrigues
{"title":"Space qualified S-band transmitter for GPS data modulation for the Brazilian Technological Satellite","authors":"I. Tosetto, R. Araujo, C. Gonçalves, J. A. Rodrigues","doi":"10.1109/IMOC.2003.1244913","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244913","url":null,"abstract":"This paper describes a S-Band Transmitter (TX) for the Technological Satellite (SATEC) using commercial SMD components emphasizing the designs concepts and tests results. The S-Band TX was designed to transmit GPS (Global Positioning System) data on BPSK format, modulated at 2.2044 GHz. The Transmitter was fully tested at INPE facilities within spatial requirements for flight qualifying. The tests results presented give the good performance of the equipment.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"51 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":"125523507","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
Prediction of phase noise in CMOS distributed oscillators CMOS分布振荡器相位噪声的预测
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.2003.1244850
Jing Zhang, Haitao Mei, T. Kwasniewski
{"title":"Prediction of phase noise in CMOS distributed oscillators","authors":"Jing Zhang, Haitao Mei, T. Kwasniewski","doi":"10.1109/IMOC.2003.1244850","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244850","url":null,"abstract":"This paper presents a frequency-domain analytical method for predicting the phase noise in distributed oscillators. The method is based upon a first-order linear model, which is then augmented with the nonlinear effects. Closed form formulae are derived for predicting the distributed oscillator phase noise which contributes from the additive noise and mixing (intermodulation) noise. The principal issues related to phase noise are discussed. Harmonic balance (HB) simulation in advanced design system (ADS) is used to ascertain the accuracy of the phase noise predictions. It is found that the theoretical conclusions are in a good agreement with the phase noise observed in the simulation, which in turn is within acceptable limits. In five test cases, namely, three 4-stage distributed oscillators operating at the three different frequencies and two distributed oscillators in 4-stage and 5-stage respectively operating at the same frequency, the maximum calculated/simulated phase noise error is about 5.0 dBc/Hz at 1MHz offset from the carrier.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"21 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":"126943964","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
Influence of RF signal power on tunable MEMS passive components 射频信号功率对可调谐MEMS无源元件的影响
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.2003.1244916
A. Cruau, C. Tassetti, P. Nicole, G. Lissorgues
{"title":"Influence of RF signal power on tunable MEMS passive components","authors":"A. Cruau, C. Tassetti, P. Nicole, G. Lissorgues","doi":"10.1109/IMOC.2003.1244916","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244916","url":null,"abstract":"MEMS structures are usually sensitive to the electrostatic or magnetic forces, but the influence of the force created by the RF signal going through them is rarely considered. In the case of MEMS tunable components, like microcapacitors or microinductors, the consequences of high RF power levels on performances are to be quantified. Two microcapacitors systems are studied: one-gap with RF signal and actuation voltage on same electrodes, and two-gaps with RF signal separated from actuation. Computational results show great influence of power on pull-in, even for quite low power levels, for both MEMS capacitor structures. Then, a similar approach is proposed for tunable microinductors, considering the influence of RF power on the Laplace force: a simple geometry with two coupled loops is studied, and the influence of power appears again very important.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"9 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":"122723239","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
An experimental evaluation of the polarization characteristics of mobile communication signals at 800 MHz 800兆赫时移动通信信号极化特性的实验评估
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.2003.1244853
L.C. Palma Pereira, T.A. Suedan
{"title":"An experimental evaluation of the polarization characteristics of mobile communication signals at 800 MHz","authors":"L.C. Palma Pereira, T.A. Suedan","doi":"10.1109/IMOC.2003.1244853","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244853","url":null,"abstract":"This paper discusses the experimental polarization characterization of multipath signals propagating in cellular communications environments. Results and analysis are presented for outdoor and indoor acquired data. The experimental conditions and setup developed for data acquisition are described.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"4 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":"122092971","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
Application of a ray tracing technique for coverage predictions in micro cellular environments 射线追踪技术在微蜂窝环境下覆盖预测中的应用
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.2003.1244852
L. Ramirez, L. S. Silva Mello, F.J.V. Hasselmannn
{"title":"Application of a ray tracing technique for coverage predictions in micro cellular environments","authors":"L. Ramirez, L. S. Silva Mello, F.J.V. Hasselmannn","doi":"10.1109/IMOC.2003.1244852","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244852","url":null,"abstract":"This work employs a 3D vector formulation for calculation of the field scattered by finite conductivity wedges, representative of obstacles usually encountered in both indoor and outdoor environments served by cellular communication systems, developed as an extension of the Uniform Theory of Diffraction (UTD) version for perfect conductors, to the calculation of propagation path losses and delay profiles for typical building layouts. Implementation aspects of launching, tracing and capturing relevant optical rays as well as applying the Quadtree method for spatial (scenario) discrimination are also discussed.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"43 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":"126693704","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
Performance of a PSK system with wavelet time diversity over flat Rayleigh fading channels 具有小波时分集的PSK系统在平坦瑞利衰落信道上的性能
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.2003.1244855
L. G. Q. Silveira, F.M. Assis, Ernest 0 Leite Pintot
{"title":"Performance of a PSK system with wavelet time diversity over flat Rayleigh fading channels","authors":"L. G. Q. Silveira, F.M. Assis, Ernest 0 Leite Pintot","doi":"10.1109/IMOC.2003.1244855","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244855","url":null,"abstract":"This paper presents a novel system for transmission over wireless channels. This system combines a smart interleaving that uses a Wavelet Coefficient Matrix (WCM) with a time diversity scheme. It is shown by computational simulation that the proposed system presents a good performance over channels with memory characterized by the flat Rayleigh fading.","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":"126374763","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: 9
Performance evaluation of conducting polymer paints as radar absorbing materials (RAM) 导电聚合物涂料作为雷达吸收材料(RAM)的性能评价
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.2003.1244885
R. S. Biscaro, E. Nohara, G. G. Peixoto, R. Faez, M. C. Rezende
{"title":"Performance evaluation of conducting polymer paints as radar absorbing materials (RAM)","authors":"R. S. Biscaro, E. Nohara, G. G. Peixoto, R. Faez, M. C. Rezende","doi":"10.1109/IMOC.2003.1244885","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244885","url":null,"abstract":"The efficiency and performance of recently developed RAM (radar absorbing materials) based on conducting polymer paints has been investigated in the range of 8-12 GHz. The used conducting polymer in the paint formulations is the polyaniline doped with two different acids: dodecylbenzene sulfonic acid (DBSA), and camphorsulfonic acid (CSA). In practice, RAM ought to be effective over a range of incidence angles; hence, this paper presents reflectivity measurements using NRL arch and radar cross section techniques, in an anechoic chamber. The RAM manufacture and its characterization were carried out at the Material Division of the Space Aeronautical Institute (IAE)/CTA-Defense Department. The results show that the attenuation and the efficiency of the microwave absorbing paints are dependent on their composition (type of polyaniline), their thickness and the incident angle of radiation.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"36 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":"115910167","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
Design and modeling of transmission line transformers 输电线路变压器的设计与建模
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.2003.1244897
J. Horn, Georg Boeck
{"title":"Design and modeling of transmission line transformers","authors":"J. Horn, Georg Boeck","doi":"10.1109/IMOC.2003.1244897","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244897","url":null,"abstract":"Equivalent circuitry for straight transmission line transformers (TLT) is presented. The circuits deploy transmission line theory to describe wave propagation of both the signal modes and the parasitic (ferrite) mode. The validity of this approach is demonstrated for two different TLTs. Both devices have an upper frequency limit of 5.5 GHz. Through the use of a single ferrite tube a lower frequency limit down to 1 MHz is achieved.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"15 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":"127587922","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
A novel tilted dipole quasi-Yagi antenna designed for 3G and Bluetooth applications 一种新型倾斜偶极子准八木天线，用于3G和蓝牙应用
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.2003.1244875
L. Kretly, A. Ribeiro
{"title":"A novel tilted dipole quasi-Yagi antenna designed for 3G and Bluetooth applications","authors":"L. Kretly, A. Ribeiro","doi":"10.1109/IMOC.2003.1244875","DOIUrl":"https://doi.org/10.1109/IMOC.2003.1244875","url":null,"abstract":"Applications in 3G, WLAN and Bluetooth are actually the largest area in wireless communications, especially for antenna designers. Due to that, in this paper a broadband planar antenna based on the classic Yagi-Uda dipole antenna and projected to the range of frequencies that includes 1.8 GHz, 1.9 GHz, and 2.45 GHz is presented. This \"tilted dipole, quasi-Yagi antenna\" achieves a measured 41% bandwidth for VSWR<2 a directivity of 5.5 dBi and an efficiency of 70-85%. In addition, a comparison between this antenna and a classical quasi-Yagi is done. The agreements between simulated and measured results for return loss are satisfactory.","PeriodicalId":156662,"journal":{"name":"Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678)","volume":"35 1 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":"130748479","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: 25
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