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2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)最新文献

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A 24 GHz IQ-demodulator with ultra-low amplitude and phase imbalance 一种超低幅相不平衡的24ghz iq解调器
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121035
Yaoshun Ding, S. Vehring, D. Maurath, S. Barbin, F. Gerfers, G. Boeck
{"title":"A 24 GHz IQ-demodulator with ultra-low amplitude and phase imbalance","authors":"Yaoshun Ding, S. Vehring, D. Maurath, S. Barbin, F. Gerfers, G. Boeck","doi":"10.1109/IMOC.2017.8121035","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121035","url":null,"abstract":"This paper describes a 24 GHz quadrature demodulator (IQ-demodulator) using 65 nm bulk CMOS technology. The proposed IQ-demodulator consists of two direct down conversion mixers and a polyphase filter for 90° phase shifting. The two mixers are matched to 50 ohm by an on-chip bias-tee matching network with ESD protection. The parasitic inductance compensation technique is used to minimize the IQ imbalance. The proposed IQ-demodulator is measured with 5 dBm LO power. Measurement results show a peak conversion gain of 7.3 dB with IQ phase and amplitude imbalances of 0.1 dB and 6 degree, respectively. The total power consumption of the demodulator is 16 mW. The active chip area is 0.42 mm2.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131797708","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
Fabrication and characterization of fiber Bragg grating based sensors for force measurements 基于光纤Bragg光栅的力测量传感器的制造与表征
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121045
M. Kamizi, Marcelo A. Pedroso, J. Fabris, M. Muller
{"title":"Fabrication and characterization of fiber Bragg grating based sensors for force measurements","authors":"M. Kamizi, Marcelo A. Pedroso, J. Fabris, M. Muller","doi":"10.1109/IMOC.2017.8121045","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121045","url":null,"abstract":"This work describes a study about encapsulation of fiber Bragg gratings in elastomer materials for sensing purposes. Sensors were tested in measurements of forces resulting from loads applied to the sensor within a measuring interval from 0 to 1500 grams. It was analyzed the influence of the elastomer composition in the sensor response. Results point to the possibility of adjusting the responses in order to adequate the sensors for specific applications. Metrological characteristics were evaluated regarding the sensors sensitivity, linearity, hysteresis and resolution. The silicone elastomer DOW CORNING® BX3-8001 stood out due to the possibility of changing its hardness and also due to the lower cure time, resulting in a sensor with sensitivity of (0.312 ± 0.002) pm/g, resolution of (1.6 ± 0.6) g, linearity of ± 4.19 % and hysteresis of ± 6.29 %.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130594667","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
Optimization of the parameters of a microstrip line for the construction of a hydrogen sensor 用于氢传感器结构的微带线参数优化
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121147
K.K.S. Santos, G. O. Cavalcanti, E. Fontana
{"title":"Optimization of the parameters of a microstrip line for the construction of a hydrogen sensor","authors":"K.K.S. Santos, G. O. Cavalcanti, E. Fontana","doi":"10.1109/IMOC.2017.8121147","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121147","url":null,"abstract":"This paper describes optimization of the constructive parameters of a high loss microstrip line using HFSS (High Frequency Structural Simulator) for the development of a hydrogen sensor. Palladium changes its conductivity with the absorption of H2. Thus, this work proposes the optimization of a high loss line of Pd for hydrogen detection. The detection is made considering the propagated signal variations along a microstrip conductor made out of palladium.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128863564","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
Vortex polymer optical fiber operating at a visible wavelength of 633 nm 涡旋聚合物光纤工作在633nm可见波长
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121113
José A Borda-Hernández, H. Hernández-Figueroa, Claudia M. Serpa-Imbett
{"title":"Vortex polymer optical fiber operating at a visible wavelength of 633 nm","authors":"José A Borda-Hernández, H. Hernández-Figueroa, Claudia M. Serpa-Imbett","doi":"10.1109/IMOC.2017.8121113","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121113","url":null,"abstract":"In this work, we present a numerical design of an air-core vortex polymer optical fiber in CYTOP that propagates modes with orbital angular momentum (OAM) at a visible wavelength of 633 nm. In this fiber, we show a stable propagation of up to 14 OAM states, even under perturbations such as changes in the circularity that leads to elliptic rings in the fabrication processes. Considering ellipticity less than 2%, we obtain charge weights lower than −38 dB between neighbor OAM modes, and around −0.25 dB for OAM modes of the same value, showing that OAM modes are uncoupled after perturbation like the ellipticity.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"17 15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130684124","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
A behaviour model for power amplifiers based on sum of products between one-dimensional polynomials and finite impulse response filters 基于一维多项式与有限脉冲响应滤波器乘积和的功率放大器行为模型
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121017
Carolina Luiza Rizental Machado, E. G. de Lima
{"title":"A behaviour model for power amplifiers based on sum of products between one-dimensional polynomials and finite impulse response filters","authors":"Carolina Luiza Rizental Machado, E. G. de Lima","doi":"10.1109/IMOC.2017.8121017","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121017","url":null,"abstract":"Power amplifier (PA) behaviour modelling is a crucial technique for the improvement of telecommunication systems because it constitutes the core of a linearisation circuit that allows for the amplifier to develop high efficiencies at the same time that it delivers a linear output signal to the load. Polynomial filters can be used in order to represent both the non-linearities of the PA and the memory effects caused by passive elements of the circuit. This work proposes a different structure for a PA polynomial behaviour model, using finite impulse response (FIR) filters and one-dimensional polynomials. The memory polynomial (MP) and the envelope memory polynomial (EMP) models were used not only as a foundation for the proposed model but also as references points for performance validation. All models were applied to a class AB GaN PA driven by a WCDMA envelope signal. Results shown an enhancement on performance for the proposed model when its accuracy was compared with the one obtained by the MP and EMP models. In contrast with the first one, the proposed model had an improvement of 4.1 dB in its normalized mean square error (NMSE), with the second one, the improvement was of 5.9 dB.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"87 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130863141","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
Horn antenna covered with an artificial dielectric structure 喇叭天线覆盖人造电介质结构
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121080
Antônio Tomaz, J. Barroso, P. J. Castro
{"title":"Horn antenna covered with an artificial dielectric structure","authors":"Antônio Tomaz, J. Barroso, P. J. Castro","doi":"10.1109/IMOC.2017.8121080","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121080","url":null,"abstract":"The present paper reports on the radiation properties of a horn antenna covered with a wire medium structure. This approach is an innovative application for the wire medium and horn antenna where the artificial structure changes the radiation patterns of the uncovered horn antenna, for which some strong effects are observed. The design and constructive details are presented together with full-wave electromagnetic simulations and experiments. Structural design and analysis are in the X band frequency range (8.2 to 12.4 GHz) whereby numerical simulation and experiment are presented and discussed along with wire medium electromagnetic theory.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132340897","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
Refining worst-case crosstalk models for the next generation broadband over copper 改进下一代铜缆宽带的最坏情况串扰模型
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121067
Diogo Acatauassu, J. C. Costa
{"title":"Refining worst-case crosstalk models for the next generation broadband over copper","authors":"Diogo Acatauassu, J. C. Costa","doi":"10.1109/IMOC.2017.8121067","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121067","url":null,"abstract":"Accurate parametric models capable of describing the electrical characteristics of short twisted-pair cables operating at relatively high frequencies are key elements for design the next generation broadband over copper. In this paper we present an experimental procedure for refining the parameters of a well-known 1% worst-case crosstalk model in order to better characterize these new transmission scenarios.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"48 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114039156","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
Some recent improvements in modeling of electromagnetic well-logging sensors via numerical mode-matching 基于数值模式匹配的电磁测井传感器建模新进展
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121048
M. Canabarro, Guilherme S. Rosa, J. Bergmann, F. Teixeira
{"title":"Some recent improvements in modeling of electromagnetic well-logging sensors via numerical mode-matching","authors":"M. Canabarro, Guilherme S. Rosa, J. Bergmann, F. Teixeira","doi":"10.1109/IMOC.2017.8121048","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121048","url":null,"abstract":"The numerical mode-matching (NMM) technique is a very efficient method to solve the electromagnetic problem of logging-while-drilling (LWD) sensors for geophysical prospecting. In this paper we present recent trends that have improved the numerical efficiency of the traditional NMM. Two NMM formulations are discussed here, with focus on its main relevant upgrades compared to previous approaches. We present numerical results for two case scenarios that demonstrate the accuracy of these new proposals to modeling typical well-logging tools used for oil and gas exploration.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116571982","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
16-QAM FPGA digital modulator and a tool to evaluate bit error rate 16-QAM FPGA数字调制器及误码率评估工具
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121170
A. C. Luiz, A. J. S. Marco, Á. A. M. Medeiros, Alexandre B. dos Santos, Thiago V. N. Coelho, Daniel D. Silveira
{"title":"16-QAM FPGA digital modulator and a tool to evaluate bit error rate","authors":"A. C. Luiz, A. J. S. Marco, Á. A. M. Medeiros, Alexandre B. dos Santos, Thiago V. N. Coelho, Daniel D. Silveira","doi":"10.1109/IMOC.2017.8121170","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121170","url":null,"abstract":"This article discusses the implementation of a wide band vectorial digital modulator and a tool to evaluate the Bit Error Rate. This modulator is capable of generate a wide band (up to 6.3 MHz) 16-QAM modulation in baseband. A second functionality programmed in the tool and reported in this article evaluates the Bit Error rate in order to measure the received signal quality. Results are validated using a Signal Analyzer.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116685548","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
Analysis of grounding problems using Interpolation Element-Free Galerkin method with reduction of computational domain 基于计算域缩减的无插值伽辽金法分析接地问题
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI: 10.1109/IMOC.2017.8121146
Maisa L. F. Oliveira, Rafael B. Macedo, U. C. Resende, R. Alípio
{"title":"Analysis of grounding problems using Interpolation Element-Free Galerkin method with reduction of computational domain","authors":"Maisa L. F. Oliveira, Rafael B. Macedo, U. C. Resende, R. Alípio","doi":"10.1109/IMOC.2017.8121146","DOIUrl":"https://doi.org/10.1109/IMOC.2017.8121146","url":null,"abstract":"In this work Interpolating Element-Free Galerkin Method (IEFGM) is presented as simple and accurate technique to investigate grounding problems. However, as IEFGM is a differential equation method, it is necessary to establish a boundary in order to limit the computational domain of the problem and where a specific boundary condition should be imposed. Thus, a new methodology, which reduces the computational domain for analysis of steady state ground problems, is proposed. To demonstrate the efficiency of the proposed method, the problem of a vertical electrode introduced in a homogeneous soil is investigated. The results of IEFGM is compared with Method of Moments results.","PeriodicalId":171284,"journal":{"name":"2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114606232","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
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