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2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)最新文献

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Microwave Oven Selection for Carbothermic Reduction of Iron Ore 铁矿石碳热还原用微波炉的选择
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317548
E. R. de Castro, L. A. Jermolovicius, E. V. dos S. Pouzada, R. B. do Nascimento, J. T. Senise, M. Mourão, C. Takano
{"title":"Microwave Oven Selection for Carbothermic Reduction of Iron Ore","authors":"E. R. de Castro, L. A. Jermolovicius, E. V. dos S. Pouzada, R. B. do Nascimento, J. T. Senise, M. Mourão, C. Takano","doi":"10.1109/IMOC43827.2019.9317548","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317548","url":null,"abstract":"This work deals with the evaluation of two microwave cavity geometric shapes used experimentally to obtain reaction rates of iron ore pellets in a carbothermic reduction process. Parallepipedic and hexahedral cavities were used. Computer simulation showed more uniform spatial distribution of the electromagnetic field in the hexahedral geometry which also had better energy efficiency. A complete 23 factorial experiment was planned to quantify influences of important variables. Experimental real data confirmed the hexahedral geometry superiority suggested by the electromagnetic computer simulations.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115292340","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
Metamaterial Based Radome Applied to a Microstrip Antenna 基于超材料的天线罩在微带天线中的应用
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317581
Marcelo Canavez, G. Ramos, Moacir Souza, S. Gonçalves, Karina Souza
{"title":"Metamaterial Based Radome Applied to a Microstrip Antenna","authors":"Marcelo Canavez, G. Ramos, Moacir Souza, S. Gonçalves, Karina Souza","doi":"10.1109/IMOC43827.2019.9317581","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317581","url":null,"abstract":"In this paper an application of radomes designed with square Split Ring Resonator (SRR) cells with DNG metamaterial characteristics is presented, to improve the gain of a Microstrip Rectangular Patch Antenna without reducing its bandwidth. The radome structure consists of layers of metamaterials alternated with air and forming three radomes, each one with 117 cells. The parameters of the cell and all the distances in the complete structure are optimized via CST software to improve antenna characteristics.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116922194","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
Design of a 28/38 GHz Compact Dual-Band Printed Monopole for 5G/IoT Sensors 用于5G/IoT传感器的28/38 GHz紧凑型双频印刷单极子设计
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317421
Amélia Ramos, T. Varum, J. N. Matos
{"title":"Design of a 28/38 GHz Compact Dual-Band Printed Monopole for 5G/IoT Sensors","authors":"Amélia Ramos, T. Varum, J. N. Matos","doi":"10.1109/IMOC43827.2019.9317421","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317421","url":null,"abstract":"It is predicted that 5G reaches the market in 2020 and to fulfil its expectations there will be a great demand for lower latency, higher data rates and better energy efficiency. Taking in consideration the bands allocated for 5G in Europe, a compact millimeter wave dual-band 28/38 GHz antenna is presented. The structure is based on a dual-band printed monopole, with a feeding network that efficiently guarantees the matching along both frequencies of operation. Additionally, this antenna has acceptable bandwidths making it adequate to use in 5G communications, integrated in IoT sensor networks.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121101390","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
Fiber Bragg Gratings in Visible Spectrum Range With Different Writing Times Followed by Regeneration Heating 可见光范围内不同写入时间的光纤布拉格光栅
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317650
C. C. de Moura, Patrícia Inácio Loren, I. Chiamenti, H. Kalinowski, V. de Oliveira
{"title":"Fiber Bragg Gratings in Visible Spectrum Range With Different Writing Times Followed by Regeneration Heating","authors":"C. C. de Moura, Patrícia Inácio Loren, I. Chiamenti, H. Kalinowski, V. de Oliveira","doi":"10.1109/IMOC43827.2019.9317650","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317650","url":null,"abstract":"This work describes the hydrogenation, writing and thermal treatment process of seed fiber Bragg gratings – FBG, written with spectra in the visible range by an Ion argon laser. Those gratings have different writing times. After writing, those FBGs are submitted to thermal treatment to induce regeneration. The processes are followed to compare the spectral parameters.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125559194","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
Low Threshold and Highly Efficient All Fiber Brillouin Laser 低阈值、高效率全光纤布里渊激光器
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317648
Eduarda Pedruzzi da Silva, Katiuski Pereira, G. Martins, Vantuir Nascimento Junior, Lucas Baldim dos Reis, C. E. Castellani
{"title":"Low Threshold and Highly Efficient All Fiber Brillouin Laser","authors":"Eduarda Pedruzzi da Silva, Katiuski Pereira, G. Martins, Vantuir Nascimento Junior, Lucas Baldim dos Reis, C. E. Castellani","doi":"10.1109/IMOC43827.2019.9317648","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317648","url":null,"abstract":"Using a simple ring cavity experimental setup, a low threshold and highly efficient all fiber Brillouin laser has been demonstrated. Three fibers with different characteristics were tested as the Brillouin gain media. A Non-Zero Dispersion-Shifted Fiber (NZDSF) of 25 km, a Highly Non-linear Fiber (HNLF) of 2 km and a 15 km Dispersion Compensating Fiber (DCF). A laser with bandwidth of 1kHz at a central wavelength of 1565 nm and 14 mW maximum optical power was used as a pump source. Spectral analysis was done using a very high-resolution Optical Spectrum Analyzer (OSA) of 1.12 pm resolution. Even using reasonably low pump powers, laser efficiencies as high as 49.43% were obtained. Additionally, contrarily to most Brillouin fiber lasers, very low thresholds with values around 1.15 mW were experimentally demonstrated.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"480 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116169518","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
Reconfigurable Microwave Coupled Resonator Band-pass Filter and Diplexer 可重构微波耦合谐振器带通滤波器和双工器
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317649
Lidiane da Silva Araújo, A. D. de Oliveira, I. Llamas-Garro, F. Mira, M. Lancaster
{"title":"Reconfigurable Microwave Coupled Resonator Band-pass Filter and Diplexer","authors":"Lidiane da Silva Araújo, A. D. de Oliveira, I. Llamas-Garro, F. Mira, M. Lancaster","doi":"10.1109/IMOC43827.2019.9317649","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317649","url":null,"abstract":"This paper presents the design, simulation and experimental results of a reconfigurable microstrip band-pass filter formed by two square open-loop resonators. A reconfigurable diplexer designed with four square spiral resonators is also proposed and preliminary simulation results are reported. The devices are designed to operate at S-band, and the reconfiguration is achieved using PIN diodes.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116173066","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
Constrained Shell Mapping for Geometric Optimization of Multilevel 4D Modulations 基于约束壳映射的多层四维调制几何优化
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317685
F. A. Rodrigues, G. Temporão, J. P. von der Weid
{"title":"Constrained Shell Mapping for Geometric Optimization of Multilevel 4D Modulations","authors":"F. A. Rodrigues, G. Temporão, J. P. von der Weid","doi":"10.1109/IMOC43827.2019.9317685","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317685","url":null,"abstract":"In this work we demonstrate the design and numerical analysis of uncoded multilevel four-dimensional modulations defined by the constrained shell mapping over the discrete Hopf fibration. Employing a two-way map between spheres defined over respectively R4 and R3, the resulting modulations presents spatiotemporal distributions resembling both geometric and probabilistic shaping. To demonstrate effectiveness, some results are provided in the geometry and mutual information performance.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122408398","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
Refractive index sensor based on a D-shaped Photonic Crystal Fiber with a gold layer coated by a graphene sheet 折射率传感器的d形光子晶体光纤与金层涂覆石墨烯片
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317562
M. P. Cardoso, J. Costa, A. Silva, P. Gaia, A. F. Romeiro
{"title":"Refractive index sensor based on a D-shaped Photonic Crystal Fiber with a gold layer coated by a graphene sheet","authors":"M. P. Cardoso, J. Costa, A. Silva, P. Gaia, A. F. Romeiro","doi":"10.1109/IMOC43827.2019.9317562","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317562","url":null,"abstract":"The investigation of a graphene-based D-shaped photonic crystal fiber sensor for operation at the visible and infrared spectra is presented. The cross section of the proposed sensor is designed by polishing a PCF with hexagonal array of air holes. A gold layer covered by a thin graphene film is deposited on the flat surface of the fiber while the analyte to be sensed can be dropped on the top of this coating. The sensing properties arise from the surface plasmon resonances (SPR) at the interface between the fiber core and the conducting slab. The sensor can reach an average sensitivity of 2815 nm/RIU for the case without graphene and 4061.8 nm/RIU when the graphene film is deposited on the top of the gold layer, allowing a resolution of 2.46x10-5 RIU for an optical spectrum analyzer with resolution of 0.1 nm. Moreover, the sensitivity can reach 7900 nm/RIU for analytes with refractive index greater than 1.37.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122410830","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 Compact and Highly Efficient SOI Polarization Splitter and Rotator based on a Bow-tie Structure 一种基于领结结构的紧凑高效SOI偏振分路器及旋转器
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317560
Yesica R. R. Bustamante, G. Farias, H. Hernández-Figueroa
{"title":"A Compact and Highly Efficient SOI Polarization Splitter and Rotator based on a Bow-tie Structure","authors":"Yesica R. R. Bustamante, G. Farias, H. Hernández-Figueroa","doi":"10.1109/IMOC43827.2019.9317560","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317560","url":null,"abstract":"We propose a compact and highly-efficient polarization splitter and rotator based on a new bow-tie converter (TM<inf>0</inf>. to TE<inf>1</inf>). It is composed by a directional coupler, a TM<inf>0</inf> to TE<inf>1</inf> and a TE<inf>1</inf> to TE<inf>0</inf> mode converters. Simulation results predict an insertion loss of $0.6 mathrm{~dB}$, a polarization conversion loss of 0.4 dB and a crosstalk level lower than $-22 mathrm{~dB}$ for the $1528-1570 mathrm{nm}$ wavelength range, for a compact device $(55 mu mathrm{m})$","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114492272","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
Use of smartphone for alimentary liquids qualitative analysis 利用智能手机对消化道液体进行定性分析
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2019-11-10 DOI: 10.1109/IMOC43827.2019.9317672
Tiago Cunha, P. André, P. Correia
{"title":"Use of smartphone for alimentary liquids qualitative analysis","authors":"Tiago Cunha, P. André, P. Correia","doi":"10.1109/IMOC43827.2019.9317672","DOIUrl":"https://doi.org/10.1109/IMOC43827.2019.9317672","url":null,"abstract":"The process of color recognition plays a central role in extracting information from the surrounding environment. In this work, we present a simple solution to use the smartphone as colorimetric sensor for colorimetric quality analysis of daily life liquids. The colorimeter contains a 3-D printed attachment combined with an optical plastic fiber, fixed to the smartphone. The fixed optical fiber allows to create an optical circuit between the smartphone’s flashlight and the camera, which are used to analyze the sample under test. To demonstrate that the implemented solution can be applied in quality control, colorimetric studies were carried out with coffee powder, red fruits juices, and wine samples.","PeriodicalId":175865,"journal":{"name":"2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114605417","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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