发布求助
文献互助 智能选刊 最新文献

2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)最新文献

筛选
英文 中文
A numerical and experimental study of the remote long-period grating fiber sensor with Raman Amplification 远距离拉曼放大长周期光栅光纤传感器的数值与实验研究
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369123
Thiago V. N. Coelho, M. J. Pontes, J. L. Santos, A. D. dos Santos, Daniel D. Silveira, Vinicius N. H. Silva, A. P. Lopez Barbero, F. Delgado, Presley X. Neto
{"title":"A numerical and experimental study of the remote long-period grating fiber sensor with Raman Amplification","authors":"Thiago V. N. Coelho, M. J. Pontes, J. L. Santos, A. D. dos Santos, Daniel D. Silveira, Vinicius N. H. Silva, A. P. Lopez Barbero, F. Delgado, Presley X. Neto","doi":"10.1109/IMOC.2015.7369123","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369123","url":null,"abstract":"In this paper, we analyze numerically and experimentally a remote optical sensor system based on Raman Amplification, composed by one long period grating operating as a sensor head separated by 50 km from the optical source and the interrogation unit composed by two fiber Bragg gratings. Since the active components of the system and the sensor head are separated over such a large distance, it is necessary to consider optical amplification to strengthen the optical signal. The use of Raman amplification allows reaching the desirable gain bandwidth by changing the pump lasers parameters such as the power, number of pumps and spectral position. We present the obtained measurement results of the environmental temperature for two different setups that was analyzed a priori by the numerical model. We show that the power ratio between the two central wavelengths of the FBG has a linear relation with the change of LPG resonance with temperature.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134217585","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
Numerical analysis of microwave excitations in multiferroic layered structures 多铁层状结构中微波激励的数值分析
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369049
V. V. Vitko, A. Ustinov, A. Semenov, B. Kalinikos, A. A. Nikitin, A. Nikitin, E. Lahderanta
{"title":"Numerical analysis of microwave excitations in multiferroic layered structures","authors":"V. V. Vitko, A. Ustinov, A. Semenov, B. Kalinikos, A. A. Nikitin, A. Nikitin, E. Lahderanta","doi":"10.1109/IMOC.2015.7369049","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369049","url":null,"abstract":"We present a theory of quasi surface spin-electromagnetic waves (SEW) spectrum in structure consisting of multiple ferrite and dielectric layers. Developed theory takes into account interactions between spin waves in the different ferrite layers and electromagnetic waves. It was shown that SEW spectra in the ferrite-ferroelectric structure based on two ferrite films and one ferroelectric layer are formed by several hybridizations. It was found that electric tuning of SEW in these structures is still possible in case of thin ferroelectric film due to spin wave interaction.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128841351","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
On the propagation of diffraction resistant beams of the Frozen Wave-type through two dielectric media 冻结波型抗衍射光束在两种介质中的传播
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369040
Grazielle de Araujo Lourenco Rodrigues, M. Zamboni-Rached
{"title":"On the propagation of diffraction resistant beams of the Frozen Wave-type through two dielectric media","authors":"Grazielle de Araujo Lourenco Rodrigues, M. Zamboni-Rached","doi":"10.1109/IMOC.2015.7369040","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369040","url":null,"abstract":"In this paper we study the propagation of diffraction resistant beams of the type Frozen Wave through two different dielectric media separated by a plane interface. We use a scalar model, assuming that the field (scalar) is a transversal cartesian component of the linear polarized electromagnetic beam.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133829601","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
Digital back-propagation ASIC design for high-speed coherent optical system 高速相干光学系统的数字反向传播ASIC设计
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369081
S. Ranzini, V. E. Parahyba, T. Vilela, E. Schneider, Joao B. Tardelli, Julio Oliveira, Eudes P. Lopes, Tiago C. Lima, J. Reis, J. Oliveira, G. Fraidenraich
{"title":"Digital back-propagation ASIC design for high-speed coherent optical system","authors":"S. Ranzini, V. E. Parahyba, T. Vilela, E. Schneider, Joao B. Tardelli, Julio Oliveira, Eudes P. Lopes, Tiago C. Lima, J. Reis, J. Oliveira, G. Fraidenraich","doi":"10.1109/IMOC.2015.7369081","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369081","url":null,"abstract":"We analyze the performance limits of the digital back-propagation (DBP) algorithm implemented in application specific integrated circuits (ASIC). The proposed hardware implementation, jointly with a set of other digital signal processing (DSP) blocks, was experimentally evaluated by processing a 32 GBd PDM-16QAM signal. In the transmitter side, it is discussed the linear filters complexity for Nyquist spectral shaping and the trade-off between number of taps and filter roll-off. Then, at the receiver, linear filters and nonlinear compensators are used to equalize chromatic dispersion (CD) and nonlinear distortions, respectively. These stages characterize the DBP block, which is able to enhance the transmission reach and the optimum launch power of the optical system. Transmission performance is optimized for different DBP implementations, considering two CMOS technology nodes: 16 nm and 28 nm. The DBP complexity is evaluated in terms of the required die size and in terms of number of the DBP stages and fiber span-lengths. For a target gain of 35% (in comparison with the CD-only compensation) on the transmission reach, the required DBP chip size is around 1.6 mm x 1.6 mm using 16 nm CMOS technology. The chip area of the nonlinear stage is only 16% larger than the linear stage.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"8 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120847968","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
Synthesis of the radiation pattern of retrodirective antenna arrays using the Particle Swarm Optimization algorithm 基于粒子群优化算法的反向定向天线阵辐射方向图综合
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369119
M. P. Magalhães, Alian M. Engroff, L. S. Pereira, M. Heckler, A. Girardi
{"title":"Synthesis of the radiation pattern of retrodirective antenna arrays using the Particle Swarm Optimization algorithm","authors":"M. P. Magalhães, Alian M. Engroff, L. S. Pereira, M. Heckler, A. Girardi","doi":"10.1109/IMOC.2015.7369119","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369119","url":null,"abstract":"This paper presents a study of radiation pattern synthesis for retrodirective arrays for mobile communication services in a scenario using high altitude platforms (HAPs). For this purpose, a dual-band and dual-polarization microstrip antenna array has been designed, whereby the array should receive the signal in one band and resend it in the other operating band. The radiation pattern in the receiving mode has been synthesized with the Particle Swarm Optimization (PSO) algorithm, which allowed steering the main beam and controlling the side lobe level. In order to assess the performance for practical implementation, a study on the impact of the magnitude discretization due to the use of digitally controlled variable-gain amplifiers on the radiation properties of the array in receiving mode was carried out. The results show that the performance is slightly affected by limitations on the RF circuitry for practical implementation.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116300468","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
UHF signal measurements and prediction using propagation models 超高频信号的测量和预测使用传播模型
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369202
K. S. Almeida, R.A.T. Santos, Edgar Silva, C. C. Cardoso, Ivonete M. L. Oliveira
{"title":"UHF signal measurements and prediction using propagation models","authors":"K. S. Almeida, R.A.T. Santos, Edgar Silva, C. C. Cardoso, Ivonete M. L. Oliveira","doi":"10.1109/IMOC.2015.7369202","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369202","url":null,"abstract":"This paper presents a radio propagation measurement campaign of the received power in a campus scenario at State University of Feira de Santana (UEFS) and Imigrantes Highway. Comparisons and an analysis between the obtained values during the measurements at UEFS and the following propagation models: Free Space, Two-Ray, Log-Distance and Two-Ray without approximations are presented. The measurements taken at Imigrantes Highway are also compared to Two-Ray model without approximations.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122045637","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
Constitutive parameters determination of bi-anisotropic metamaterials using a waveguide method 用波导法测定双各向异性超材料的本构参数
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369109
U. Hasar, M. Bute, A. Muratoglu, J. Barroso, T. Karacali, M. Ertuğrul
{"title":"Constitutive parameters determination of bi-anisotropic metamaterials using a waveguide method","authors":"U. Hasar, M. Bute, A. Muratoglu, J. Barroso, T. Karacali, M. Ertuğrul","doi":"10.1109/IMOC.2015.7369109","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369109","url":null,"abstract":"A retrieval method is proposed for determination of electromagnetic properties of bi-anisotropic metamaterial (MM) slabs inserted in a waveguide. For this goal, forward and backward reflection and transmission scattering (S-) parameters of a configuration where the slab is positioned into a waveguide are first derived and then a procedure for extraction of electromagnetic properties of this slab is presented. We performed full-wave electromagnetic simulations on the bi-anisotropic MM slab with split-ring-resonators to validate the proposed method.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117209741","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
Vibration measurement of Induction Motor under dynamic eccentricity using optical fiber Bragg grating sensors 用光纤光栅传感器测量感应电机在动态偏心下的振动
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369059
Kleiton de Morais Sousa, U. Dreyer, C. Martelli, J. C. Cardozo da Silva
{"title":"Vibration measurement of Induction Motor under dynamic eccentricity using optical fiber Bragg grating sensors","authors":"Kleiton de Morais Sousa, U. Dreyer, C. Martelli, J. C. Cardozo da Silva","doi":"10.1109/IMOC.2015.7369059","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369059","url":null,"abstract":"The vibration in Three-Phase Induction Motors (TIM) is due to mechanical and electrical forces existing during the motor operation. Vibration problems in induction motors can be extremely frustrating and may lead to greatly reduced reliability increasing the maintenance cost. The vibration was measured using fiber Bragg gratings (FBG) installed inside the motor between two stator teeth. The vibration frequencies in TIM are predicted using a model of the forces present in the air gap considering a static and dynamic rotor eccentricity. Two FBGs were positioned between two stator teeth, separated by 120° from each other. The analysis of the vibration spectrum at 60 Hz motor power supply presents the frequencies 60 Hz, 120 Hz, 180 Hz and 240 Hz. This combination of the mechanical and electrical frequencies continue to appear even when the motor electrical supply frequency is reduced by half. The measurement present in this paper can be used to determine some TIM parameters, like the effect of the motor power supply on its vibration signal and also be used like a potential maintenance tool for predictive purposes with high efficiency to continuously monitor the TIM.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131077078","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
A new concept of microstrip Rotman lens design 一种微带罗特曼透镜设计的新概念
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369130
Ilidio L. Ferreira Filho, M. Mosso
{"title":"A new concept of microstrip Rotman lens design","authors":"Ilidio L. Ferreira Filho, M. Mosso","doi":"10.1109/IMOC.2015.7369130","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369130","url":null,"abstract":"This paper presents a methodology for design a more reliable printed microstrip Rotman lens with the support of electromagnetic simulation software. A lens with four beam ports and four array ports in the range of 4 to 6 GHz is developed and manufactured with simulated and measured results of reflection coefficient, isolation and radiation pattern, showing a good performance of this methodology.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856915","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
Signal-flow graph analysis in PLC multipath model PLC多路径模型中的信号流图分析
2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2015-11-01 DOI: 10.1109/IMOC.2015.7369222
U. R. C. Victor, F. Sabino, G. Machado, M. T. de Melo, B. D. de Oliveira, M. Segatto
{"title":"Signal-flow graph analysis in PLC multipath model","authors":"U. R. C. Victor, F. Sabino, G. Machado, M. T. de Melo, B. D. de Oliveira, M. Segatto","doi":"10.1109/IMOC.2015.7369222","DOIUrl":"https://doi.org/10.1109/IMOC.2015.7369222","url":null,"abstract":"The transfer function of electrical power lines for Broadband Power Line Communication (BPLC) is investigated through a signal-flow graph analysis. The work intends to present a new, simple and didactic way to model the transfer function of a multi-path model, in which the attenuation losses are taken into account. The results are compared to the transfer function obtained by the ABCD model. Measurements on coax cables and electrical grids are presented and the results are investigated.","PeriodicalId":431462,"journal":{"name":"2015 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125349467","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：604180095
Book学术官方微信
小红书