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2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)最新文献

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Design and Analysis of square monopole based on Minkowskifractal 基于闵可夫斯基分形的方形单极子设计与分析
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646574
N. Santos, H. Ferreira, W. J. C. M. Filho, M. Neto, F. Barros, G. Cavalcante
{"title":"Design and Analysis of square monopole based on Minkowskifractal","authors":"N. Santos, H. Ferreira, W. J. C. M. Filho, M. Neto, F. Barros, G. Cavalcante","doi":"10.1109/IMOC.2013.6646574","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646574","url":null,"abstract":"The goal of this article is to show the design and analysis of a planar monopole initially designed to meet applications WLAN and 4G. It was applied to the Minkowski fractal curve for the modification of the dimensions of the monopole, where it was possible to obtain a third resonance frequency. Finally, modifications were applied on the ground plane to increase the bandwidth of the frequencies studied. The frequencies for calculating the superior and inferior cut of the bandwidth were obtained at - 10 dB. The commercial software CST MICROWAVE STUDIO was used to calculate the properties of the antenna.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124567805","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
Micromachined terahertz circuits 微机械太赫兹电路
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646611
M. Lancaster, X. Shang, Y. Tian
{"title":"Micromachined terahertz circuits","authors":"M. Lancaster, X. Shang, Y. Tian","doi":"10.1109/IMOC.2013.6646611","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646611","url":null,"abstract":"As frequency increases the wavelength gets smaller and therefore the size of waveguides shrink. At terahertz frequencies the size of a waveguide is such that it is difficult to fabricate using conventional milling, especially when fine structures are required when making filters. Here we present an overview of work on micromachined circuits for these very high frequencies, initially demonstrating waveguides can be constructed with a loss as good as normal metals and then describing the design and measurements of some waveguide filters.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134639022","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
EDFA adaptive gain control effect analysis over an amplifier cascade in a DWDM optical system DWDM光学系统中放大器级联的EDFA自适应增益控制效果分析
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646469
U. C. de Moura, Juliano R. F. Oliveira, Julio Oliveira, A. C. César
{"title":"EDFA adaptive gain control effect analysis over an amplifier cascade in a DWDM optical system","authors":"U. C. de Moura, Juliano R. F. Oliveira, Julio Oliveira, A. C. César","doi":"10.1109/IMOC.2013.6646469","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646469","url":null,"abstract":"In this paper, we analyze the EDFA adaptive gain control impact on 80 modulated C-band channels (10 Gbps NRZ) in a DWDM optical system composed of four cascaded amplifiers. System performance was evaluated in terms of channels optical signal-to-noise ratio (OSNR), noise figure (NF), bit error rate (BER), and gain flatness (GF) measurements. The adaptive EDFA scheme aims to optimize NF and GF spectra by adjusting its setpoint gain based on static information about these parameters and was improved here to prioritize NF when BER of the received signal remains under the FEC limit.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134312998","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: 33
Moment expansion and nonuniform FFT applied to antenna reflection parameter characterization using a FDTD/WP-PML algorithm 利用FDTD/WP-PML算法将矩展开和非均匀FFT应用于天线反射参数表征
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646411
G. Ramos, C. Rego, C. G. Batista
{"title":"Moment expansion and nonuniform FFT applied to antenna reflection parameter characterization using a FDTD/WP-PML algorithm","authors":"G. Ramos, C. Rego, C. G. Batista","doi":"10.1109/IMOC.2013.6646411","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646411","url":null,"abstract":"This paper presents the results of the application of a moment expansion and a nonuniform FFT technique together with a FDTD algorithm in order to determinate the return loss parameter of printed antennas. The impedance characterization of wideband printed antennas with lossy substrates is introduced by means of an approach based on FDTD method and the WP-PML absorbing boundary condition. It was used a simple voltage source model where an excitation plane with an Gaussian vertical electrical field was imposed to a rectangular area just below the structure to be analyzed. Results obtained for the return loss of a multiband and an UWB printed antenna are compared to those determined from conventional FFT based methods available in the scientific literature as well as measurements previously done, in order to show the applicability of the methodology that has been developed herein. The results obtained for return loss parameter showed good agreements between the techniques proposed by this work and the results previous done.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114960664","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
Long-term analysis of atmospheric effects on free space optical links 大气对自由空间光链路影响的长期分析
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646585
V. Brazda, O. Fiser
{"title":"Long-term analysis of atmospheric effects on free space optical links","authors":"V. Brazda, O. Fiser","doi":"10.1109/IMOC.2013.6646585","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646585","url":null,"abstract":"Free space optical links provide a high data rate transmission through free space. The biggest disadvantage is a high impact of real atmosphere on availability of the links. This contribution shows results from the 4 years measurement (1.2009-12.2012) on experimental dual-wavelength optical link. The measurement site on the Milesovka Mt. is very specific. The link is very often in the middle of low cloudiness reaching the top of the mountain. Thanks to that we can measure the attenuation caused by the clouds. Our results show that the attenuation is higher comparing to the theoretical model that uses visibility as a parameter. On the other hand the measured rain attenuation is in agreement with the model determined by Carbonneau in France.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"345 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116537167","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
ILP model and effective genetic algorithm for routing and spectrum allocation in elastic optical networks 弹性光网络中路由和频谱分配的ILP模型和有效遗传算法
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646487
J. H. L. Capucho, L. Resendo
{"title":"ILP model and effective genetic algorithm for routing and spectrum allocation in elastic optical networks","authors":"J. H. L. Capucho, L. Resendo","doi":"10.1109/IMOC.2013.6646487","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646487","url":null,"abstract":"This paper proposes an integer linear programming (ILP) formulation and an effective heuristic based on genetic algorithm (GA) for static routing and spectrum allocation (RSA) problem in spectrum-sliced elastic optical path network (SLICE). The RSA problem belongs to the class of problems called NP-Hard, and then approaches to achieve optimal solutions are limited to solve only small instances. For real networks optimal methods cannot give a solution in viable time, hence heuristic approaches are required. Then, we propose an ILP model and Genetic Algorithm (GA) to optimize the RSA problem in SLICE network. In spite of scalability problem an integer linear programming (ILP) formulation is presented, with the goal of attaining optima solutions for small networks and ascertaining our heuristic's efficiency. In addition, it is presented a detailed analysis for GA's parameters.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115194143","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: 11
Systematic modeling and parameter extraction for on-chip inductors in CMOS technology 基于CMOS技术的片上电感系统建模与参数提取
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646467
S. C. Sejas-García, R. Torres‐Torres, L. C. Moreira
{"title":"Systematic modeling and parameter extraction for on-chip inductors in CMOS technology","authors":"S. C. Sejas-García, R. Torres‐Torres, L. C. Moreira","doi":"10.1109/IMOC.2013.6646467","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646467","url":null,"abstract":"This paper presents a systematic methodology for characterizing and modeling on-chip inductors over a lossy substrate directly from S-parameter measurements. The model implementation neither requires precise knowledge of geometry or fabrication process. This eases the representation of inductors in SPICE-like simulators at high frequencies. Excellent model-experiment correlation is achieved up to 12 GHz for the circuit network parameters as well as for the Q-factor.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123225384","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
Broadband measurements of reflection coefficient with the use of Butler matrix 利用巴特勒矩阵测量宽带反射系数
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646410
K. Staszek, S. Gruszczynski, K. Wincza, A. Rydosz
{"title":"Broadband measurements of reflection coefficient with the use of Butler matrix","authors":"K. Staszek, S. Gruszczynski, K. Wincza, A. Rydosz","doi":"10.1109/IMOC.2013.6646410","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646410","url":null,"abstract":"A novel application of a 4 × 4 Butler matrix in a broadband reflectometer is presented. The well-known dedicated multiport has been replaced with a standard 4 × 4 Butler matrix with reflective element connected to the one of its ports. It is shown, that properties of such a network allow for the complex reflection coefficient measurements. In order to broaden measurement frequency range, a simple modification of a calibration procedure is proposed. The presented system has been verified experimentally by the measurement of reflection coefficients of three shorted attenuators in frequency range 1 - 5 GHz. The measurements have been compared with ones obtained with the use of commercial VNA, showing good agreement.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123767126","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
MILP formulation for resource optimization in Spectrum-Sliced Elastic Optical Path Networks 频谱切片弹性光路网络资源优化的MILP公式
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646582
K. Assis, I. Queiroz, R. C. Almeida, H. Waldman
{"title":"MILP formulation for resource optimization in Spectrum-Sliced Elastic Optical Path Networks","authors":"K. Assis, I. Queiroz, R. C. Almeida, H. Waldman","doi":"10.1109/IMOC.2013.6646582","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646582","url":null,"abstract":"We propose a linear formulation based on Mixed-Integer Linear Programming (MILP) for efficiently designing Spectrum-Sliced Elastic Optical Path Networks (SLICE) under traffic Grooming. The formulation minimizes the spectrum utilization when the total number of transceivers are limited and taken as a constraint. The results suggest that the proposed model provides a tool to analyse the compromise between the number of transceiver and the network utilization, making efficient use of resources.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125278899","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
Modified OPGW cable - Electrical and thermal analysis by coupled equations 改进型OPGW电缆。耦合方程的电学和热分析
2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC) Pub Date : 2013-10-28 DOI: 10.1109/IMOC.2013.6646490
V. Dmitriev, L. Gonzalez
{"title":"Modified OPGW cable - Electrical and thermal analysis by coupled equations","authors":"V. Dmitriev, L. Gonzalez","doi":"10.1109/IMOC.2013.6646490","DOIUrl":"https://doi.org/10.1109/IMOC.2013.6646490","url":null,"abstract":"In this paper we investigate electrical and thermal characteristics of two modifications of optical ground wire cables. The simulations are carried out by coupled equations, i.e., the electrical and thermal effects are considered simultaneously in order to increase accuracy of the results. The calculations of the current density in the cross-section of the cables are based on the electromagnetic field theory. In the thermal analysis, the principles of heat transfer by conduction and of thermal equilibrium are used. The numerical results are obtained by the software COMSOL which is based on the finite element method.","PeriodicalId":395359,"journal":{"name":"2013 SBMO/IEEE MTT-S International Microwave & Optoelectronics Conference (IMOC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128008393","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
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