Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803212
V. Tsakiris, E. Enescu, A. Radulian, M. Lucaci, M. Lungu, N. Mocioi, L. Leonat, D. Cirstea, A. Caramitu
Electrical contact materials WC-based to be used as electrical contacts for vacuum contactors were developed by spark plasma sintering process. The electrical contact materials were developed from homogenized powder composite mixtures of WC-Cu (60-40) and WC-Co-Cu (59.5-0.5-40), which were spark plasma sintered in vacuum, in the interval of temperatures of 1015-1045 °C, under 50 MPa pressure and a dwell time of 300 s, at a heating rate and a cooling rate of 100°C/min. The obtained electrical contact pieces of 20.5 mm in diameter and 3 mm in height were investigated from the physical, microstructural, electrical, mechanical and functional properties point of view. At optimal sintering temperatures (1035°C-1045°C) and the same dwell time (300 s), we have obtained electrical contact pieces with homogeneous microstructures and excellent physical and mechanical properties for both studied systems. We have obtained best performances on the electrical contacts from WC-Cu with 40 wt.% Cu which had low degree of porosity (5.16 %), high value of Vickers hardness (226±5 HV), high value of Young's modulus (160±2 GPa) and the lowest values for electrical resistivity (4.35 μΩ×cm), chopped current (1.76 A) and standard deviation (0.37%). A small amount of sintering additive (0.5 wt%Co) to the WC-40wt% is helping to increase the densification degree and mechanical properties but decreases electrical properties and also, increases the functional parameters. Thus, in compare with the WC-40wt.%Cu electrical contacts, the chopped current for the WC-0.5wt.%Co-40wt.%Cu is increasing with 16%.
{"title":"WC-Cu electrical contacts developed by spark plasma sintering process","authors":"V. Tsakiris, E. Enescu, A. Radulian, M. Lucaci, M. Lungu, N. Mocioi, L. Leonat, D. Cirstea, A. Caramitu","doi":"10.1109/ISFEE.2016.7803212","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803212","url":null,"abstract":"Electrical contact materials WC-based to be used as electrical contacts for vacuum contactors were developed by spark plasma sintering process. The electrical contact materials were developed from homogenized powder composite mixtures of WC-Cu (60-40) and WC-Co-Cu (59.5-0.5-40), which were spark plasma sintered in vacuum, in the interval of temperatures of 1015-1045 °C, under 50 MPa pressure and a dwell time of 300 s, at a heating rate and a cooling rate of 100°C/min. The obtained electrical contact pieces of 20.5 mm in diameter and 3 mm in height were investigated from the physical, microstructural, electrical, mechanical and functional properties point of view. At optimal sintering temperatures (1035°C-1045°C) and the same dwell time (300 s), we have obtained electrical contact pieces with homogeneous microstructures and excellent physical and mechanical properties for both studied systems. We have obtained best performances on the electrical contacts from WC-Cu with 40 wt.% Cu which had low degree of porosity (5.16 %), high value of Vickers hardness (226±5 HV), high value of Young's modulus (160±2 GPa) and the lowest values for electrical resistivity (4.35 μΩ×cm), chopped current (1.76 A) and standard deviation (0.37%). A small amount of sintering additive (0.5 wt%Co) to the WC-40wt% is helping to increase the densification degree and mechanical properties but decreases electrical properties and also, increases the functional parameters. Thus, in compare with the WC-40wt.%Cu electrical contacts, the chopped current for the WC-0.5wt.%Co-40wt.%Cu is increasing with 16%.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132457184","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803230
M. Taciuc
This paper presents an electronic system for testing photovoltaic (PV) modules by tracing their I-V and P-V characteristics in real meteorological test conditions. It consists of an electronic fast varying load based on power MOSFETs controlled by means of a sweeping gate-source voltage, and an appropriate computer-based instrumentation system for the characterization of the PV panels energy conversion. The developed electronic circuit has the advantages of low cost and simplicity. Experimental results obtained with the designed electronic circuit are presented.
{"title":"An experimental system for measuring the PV panel characteristics curves under real operation conditions","authors":"M. Taciuc","doi":"10.1109/ISFEE.2016.7803230","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803230","url":null,"abstract":"This paper presents an electronic system for testing photovoltaic (PV) modules by tracing their I-V and P-V characteristics in real meteorological test conditions. It consists of an electronic fast varying load based on power MOSFETs controlled by means of a sweeping gate-source voltage, and an appropriate computer-based instrumentation system for the characterization of the PV panels energy conversion. The developed electronic circuit has the advantages of low cost and simplicity. Experimental results obtained with the designed electronic circuit are presented.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130584919","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803176
L'Hocine Mouas, H. Mohellebi, S. H. Ould Ouali
This work concerns the modeling by finite element method of magnetostatic's phenomena occurring in ferromagnetic material and governed by the 2D non-linear equation. It deals with magnetic interaction between the magnetic field produced by an independent source field (land) and ferromagnetic material representing the hull of a ship. The latter is represented by the magnetic curve B(H) deduced from the Rayleigh hysteresis model. The magnetic hysteresis was successfully integrated into the finite element calculation of the field produced by the ferromagnetic shell through the Rayleigh model. A distribution of the magnetic field at any point of the domain resolution is thus obtained and in particular at the vicinities of the ferromagnetic shell. The results of simulation obtained for various orientations of magnetic magnetization were compared, a good agreement was found with the literature.
{"title":"Modeling of nonlinear electromagnetic phenomena of ship's magnetism","authors":"L'Hocine Mouas, H. Mohellebi, S. H. Ould Ouali","doi":"10.1109/ISFEE.2016.7803176","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803176","url":null,"abstract":"This work concerns the modeling by finite element method of magnetostatic's phenomena occurring in ferromagnetic material and governed by the 2D non-linear equation. It deals with magnetic interaction between the magnetic field produced by an independent source field (land) and ferromagnetic material representing the hull of a ship. The latter is represented by the magnetic curve B(H) deduced from the Rayleigh hysteresis model. The magnetic hysteresis was successfully integrated into the finite element calculation of the field produced by the ferromagnetic shell through the Rayleigh model. A distribution of the magnetic field at any point of the domain resolution is thus obtained and in particular at the vicinities of the ferromagnetic shell. The results of simulation obtained for various orientations of magnetic magnetization were compared, a good agreement was found with the literature.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130752222","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803174
Bogdan Dumitrescu, Sorin Adrian Ciureanu, H. Gavrilă
The paper presents a comparative study of two magnetic materials: Co-rich nanocrystalline and amorphous films of the same compositions, obtained by electroplating at different current density. The electrodeposited Co-rich alloys formed at 20-30 mA/cm2 are nanocrystalline and have the same magnetic behavior and a good stability.
{"title":"Magnetic properties of nanocrystalline films and amorphous Co-rich alloys","authors":"Bogdan Dumitrescu, Sorin Adrian Ciureanu, H. Gavrilă","doi":"10.1109/ISFEE.2016.7803174","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803174","url":null,"abstract":"The paper presents a comparative study of two magnetic materials: Co-rich nanocrystalline and amorphous films of the same compositions, obtained by electroplating at different current density. The electrodeposited Co-rich alloys formed at 20-30 mA/cm2 are nanocrystalline and have the same magnetic behavior and a good stability.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126506023","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803199
B. Florea
Multilevel converters are a special type of power converters, which can be classified as hybrid systems. This means that their model contains both continuous and discrete variables, which pose a challenge for the controller. However, this type of power converter has certain advantages, such as improved switching frequency, reduced output ripple and modularity. Petri nets are ideal for representing hybrid systems. In this paper, a Petri net controller will be developed for a series flying capacitor converter. The proposed control strategy will use a state observer in order to estimate the flying capacitor voltages.
{"title":"Petri net control strategy for series multilevel converters using a state observer","authors":"B. Florea","doi":"10.1109/ISFEE.2016.7803199","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803199","url":null,"abstract":"Multilevel converters are a special type of power converters, which can be classified as hybrid systems. This means that their model contains both continuous and discrete variables, which pose a challenge for the controller. However, this type of power converter has certain advantages, such as improved switching frequency, reduced output ripple and modularity. Petri nets are ideal for representing hybrid systems. In this paper, a Petri net controller will be developed for a series flying capacitor converter. The proposed control strategy will use a state observer in order to estimate the flying capacitor voltages.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125208602","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803190
C. Popescu, I. Hantila, G. Vasilescu, M. Maricaru
The paper proposes a method for the analysis of electromagnetic shielding in the case of perforated screens. The screen is modeled by an electric circuit on which loop analysis is performed. The equations coefficients are obtained from the resistances, self-inductances and mutual inductances of the screen sectors. These parameters are determined by integration, assuming a simplified model for the distribution of the magnetic potential and the current density. In order to minimize the computational error, the integration expressions are selected based on the distance between the screen sectors. A two-dimensional field computational model is employed.
{"title":"Analyzing electromagnetic shielding of perforated screens","authors":"C. Popescu, I. Hantila, G. Vasilescu, M. Maricaru","doi":"10.1109/ISFEE.2016.7803190","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803190","url":null,"abstract":"The paper proposes a method for the analysis of electromagnetic shielding in the case of perforated screens. The screen is modeled by an electric circuit on which loop analysis is performed. The equations coefficients are obtained from the resistances, self-inductances and mutual inductances of the screen sectors. These parameters are determined by integration, assuming a simplified model for the distribution of the magnetic potential and the current density. In order to minimize the computational error, the integration expressions are selected based on the distance between the screen sectors. A two-dimensional field computational model is employed.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115416333","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803177
G. Păltânea, V. Manescu, H. Gavrilă, I. Peter, D. Popovici
Water jet technology that uses abrasive particles is an efficient cutting method, for electrical steels and it has many advantages, by comparison with the classical punching. During the cutting process there are not any heating phenomena and the method has a high versatility with a minimum applied stress on the work piece. There were tested strip samples of M400-50A, M400-65A, M700-50A and M700-65A electrical steel grades cut through water jet technology. The samples' length is equal to 300 mm and their width is set to 30, 15, 10, 7.5 and 5 mm. The magnetic property measurements were performed with a laboratory single strip tester (SST), which can characterize only samples with an area of 300 mm × 30 mm. Thus, to reconstruct the standard width of 30 mm, there were put side by side 2, 3, 4 and 6 pieces with the same width. The magnetic quantities were investigated at 1000 mT in the frequency range 10 ÷ 100 Hz. This type of non-conventional cutting method proves to have a low influence on the energy losses with respect to the increase of the cutting perimeter, because during the cutting process the edge damage is limited to a very narrow width.
利用磨料颗粒的水射流技术是一种高效的电工钢切削方法，与传统的冲孔切削相比，具有许多优点。在切割过程中没有任何加热现象，该方法具有高通用性，对工件施加的应力最小。通过水射流切割技术，测试了M400-50A、M400-65A、M700-50A和M700-65A电工钢等级的带钢样品。样品的长度为300mm，宽度设置为30,15,10,7.5和5mm。磁性能测量采用实验室单条测试仪(SST)进行，该测试仪只能表征面积为300 mm × 30 mm的样品。因此，为了重建30mm的标准宽度，将相同宽度的2、3、4、6片并排放置。在10 ~ 100 Hz的频率范围内，对1000 mT的磁量进行了研究。由于在切割过程中，边缘损伤被限制在一个非常窄的宽度内，因此这种类型的非常规切割方法对能量损失的影响相对于切割周长的增加来说很小。
{"title":"Magnetic property analysis in non-oriented silicon iron steels cut through water jet technology","authors":"G. Păltânea, V. Manescu, H. Gavrilă, I. Peter, D. Popovici","doi":"10.1109/ISFEE.2016.7803177","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803177","url":null,"abstract":"Water jet technology that uses abrasive particles is an efficient cutting method, for electrical steels and it has many advantages, by comparison with the classical punching. During the cutting process there are not any heating phenomena and the method has a high versatility with a minimum applied stress on the work piece. There were tested strip samples of M400-50A, M400-65A, M700-50A and M700-65A electrical steel grades cut through water jet technology. The samples' length is equal to 300 mm and their width is set to 30, 15, 10, 7.5 and 5 mm. The magnetic property measurements were performed with a laboratory single strip tester (SST), which can characterize only samples with an area of 300 mm × 30 mm. Thus, to reconstruct the standard width of 30 mm, there were put side by side 2, 3, 4 and 6 pieces with the same width. The magnetic quantities were investigated at 1000 mT in the frequency range 10 ÷ 100 Hz. This type of non-conventional cutting method proves to have a low influence on the energy losses with respect to the increase of the cutting perimeter, because during the cutting process the edge damage is limited to a very narrow width.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122943067","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803197
K. Khandakji
In this paper the performance of inductor alternator operating with variable speed is analyzed; the effect of loading the generator on the distortion of the shape of the terminal voltage is experimentally investigated. Experimental results show that increasing the load on the generator increases the distortion of the generated voltage shape from sinusoidal. The relationship between the generated voltage and the excitation current at different operating speeds is analyzed; analysis shows that when the generator runs at the minimum speed (750 rpm), the rectified voltage at the terminals of the dc link cannot be maintained at its nominal value even with the maximum field current, the reason of that is the high distortion of the generated ac voltage which leads to significant reduction of the rectified voltage. Recommendations about reconsidering the real value of the generator gain at the design stage of the closed-loop voltage control system are given.
{"title":"Experimental analysis of load variation on inductor alternator operating with variable speed","authors":"K. Khandakji","doi":"10.1109/ISFEE.2016.7803197","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803197","url":null,"abstract":"In this paper the performance of inductor alternator operating with variable speed is analyzed; the effect of loading the generator on the distortion of the shape of the terminal voltage is experimentally investigated. Experimental results show that increasing the load on the generator increases the distortion of the generated voltage shape from sinusoidal. The relationship between the generated voltage and the excitation current at different operating speeds is analyzed; analysis shows that when the generator runs at the minimum speed (750 rpm), the rectified voltage at the terminals of the dc link cannot be maintained at its nominal value even with the maximum field current, the reason of that is the high distortion of the generated ac voltage which leads to significant reduction of the rectified voltage. Recommendations about reconsidering the real value of the generator gain at the design stage of the closed-loop voltage control system are given.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125104384","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803172
Ching-Hwa Cheng, Peng-Hsiung Lin
This paper presents a wireless four-camera, lesion-track panoramic-vision system design for microscopic surgery. The proposed low-power, small-volume, four-camera, wide-vision microscope makes in-vivo laser treatment becomes feasible. The lesion-tracking function uses a hue-saturation value to trail micro-tumor and allows a laser beam treatment onto a tumor while the patient is breathing.
{"title":"Implementing a wireless four-camera panoramic-vision with lesion-tracking for in-vivo laser treatment microscopic surgery","authors":"Ching-Hwa Cheng, Peng-Hsiung Lin","doi":"10.1109/ISFEE.2016.7803172","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803172","url":null,"abstract":"This paper presents a wireless four-camera, lesion-track panoramic-vision system design for microscopic surgery. The proposed low-power, small-volume, four-camera, wide-vision microscope makes in-vivo laser treatment becomes feasible. The lesion-tracking function uses a hue-saturation value to trail micro-tumor and allows a laser beam treatment onto a tumor while the patient is breathing.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121385579","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}
Pub Date : 2016-06-01DOI: 10.1109/ISFEE.2016.7803193
M. Marin, F. Constantinescu, Catalin Brinzei, A. Gheorghe
A new calibration method for digital to analog converters (DAC) is verified, measuring a set of chips, each containing a 8 bit current steering DAC with a 5+3 segmented architecture. For a sampling frequency of 500MHz and a bandwidth of 5MHz all tested circuits exhibited, after calibration, a Spurious Free Dynamic Range (SFDR) better than 50dB. For a sampling frequency of 1GHz and a bandwidth of 10MHz, a SFDR better than 40dB resulted for all tested cases. These last results could be explained by a degradation of the digital signal supplied by the FPGA board, which has a maximum reliable clock frequency of 600MHz, and by the influence of the parasitic elements introduced by the PCB traces. In all measured cases an improvement of 2-4dB of the SFDR value has been obtained using the proposed calibration method.
{"title":"Verification of a calibration method for digital to analog converters","authors":"M. Marin, F. Constantinescu, Catalin Brinzei, A. Gheorghe","doi":"10.1109/ISFEE.2016.7803193","DOIUrl":"https://doi.org/10.1109/ISFEE.2016.7803193","url":null,"abstract":"A new calibration method for digital to analog converters (DAC) is verified, measuring a set of chips, each containing a 8 bit current steering DAC with a 5+3 segmented architecture. For a sampling frequency of 500MHz and a bandwidth of 5MHz all tested circuits exhibited, after calibration, a Spurious Free Dynamic Range (SFDR) better than 50dB. For a sampling frequency of 1GHz and a bandwidth of 10MHz, a SFDR better than 40dB resulted for all tested cases. These last results could be explained by a degradation of the digital signal supplied by the FPGA board, which has a maximum reliable clock frequency of 600MHz, and by the influence of the parasitic elements introduced by the PCB traces. In all measured cases an improvement of 2-4dB of the SFDR value has been obtained using the proposed calibration method.","PeriodicalId":240170,"journal":{"name":"2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123386807","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}
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