Iulia–Eliza Ţinca, I. Ailinei, A. Silaghi, Ciprian Bleoju, A. Davidescu, L. Marșavina
{"title":"Evaluation of Finite Element Modelling Techniques of Printed Circuit Boards under Dynamic and Static Loading and Validation with Experimental Data","authors":"Iulia–Eliza Ţinca, I. Ailinei, A. Silaghi, Ciprian Bleoju, A. Davidescu, L. Marșavina","doi":"10.1109/SIITME53254.2021.9663724","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663724","url":null,"abstract":"When modeling the Printed Circuit Boards (PCBs) for structural analysis, we usually trade complexity for inaccuracy due to the PCB composite nature and data unavailability. This paper presents an extensive survey of innovative Finite Element (FE) techniques for numerical modeling of the PCBs in static and dynamic conditions. We aim for an optimal FE modeling approach that captures the global effects and correct stiffness behavior. We use ANSYSTM Workbench, ANSYSTM Material Designer, and ANSYSTM Sherlock and analyze the FE model with OptiSLangTM. In addition, we model a PCB assembly as well.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123780123","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}
{"title":"3D Helmholtz Coil System Design for Measuring the Thermal Conductivity of Magnetic Nanofluids","authors":"R. Alsangur, S. Doğanay, A. Turgut, L. Çetin","doi":"10.1109/SIITME53254.2021.9663711","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663711","url":null,"abstract":"Magnetic nanofluids are special colloids that have many potential application areas because their thermophysical properties can be tuned under an applied magnetic field. One of the thermophysical properties that can be tuned using an external magnetic field is the thermal conductivity of these fluids. The studies on the measurement of the thermal conductivity of the magnetic nanofluids put emphasis on the direction and the uniformity of the magnetic field applied to the fluid. The measurement results show that thermal conductivity results change when the external magnetic field is applied parallel or perpendicular to the temperature gradient of the thermal conductivity measurement probe. Permanent magnets and electromagnets are commonly employed in these studies. The proposed design of 3D Helmholtz coil system as the magnetic field generator enables to measure the thermal conductivity of the magnetic nanofluids under uniform and rotating magnetic field. By using the rotating magnetic field, the external magnetic field can be applied in any desired direction to the temperature gradient. The rotating of the magnetic field was demonstrated in this study by changing the current values of the coil pairs. The simulation results of the study show that the proposed 3D Helmholtz coil system can generate a uniform magnetic field in the measurement area and the field direction can be altered by only controlling the current values without any mechanical adjustments.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115497626","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}
{"title":"Activation of the polyvalent functionality for the optical filters using metamaterials","authors":"D. Ionescu, G. Apreotesei","doi":"10.1109/SIITME53254.2021.9663657","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663657","url":null,"abstract":"A multifunctional filtering structure has been obtained, where the filter character can be changed by redirecting the propagating wave through one path of the module or another. A metamaterial with constituents of tens to hundreds of nanometers for filtering in visible and infrared range was used, where commutation was done by interchanging the module pins of the filter connected to a multimode optical fiber. Metamaterial structure was synthesized using simulation methods with HFSS. Structure was reproduced at nanoscopic level in order to model the resonant propagation phenomena of the plasmons. Metal / dielectric constituents have been considered, in complementary geometrical configurations. The S parameters at the field propagation have been obtained in a range of 400 – 1000 nm. Different domains of their evolution in function of wavelength can be extended by adjusting the geometrical parameters of the structure. The optimal geometry for a specific filtering effect (broadband / narrow band / stop band) was set. The Drude-Lorentz model was used to calculate the resonant frequency of the filter with periodic spatial structure. A more reliable model for the real sample has been exploited for simulations","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122380784","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}
Ionelia-Bianca Brezeanu, Cătălin Botezatu, A. Vasile, G. Brezeanu
{"title":"The Impact of the Sub-circuits Parameters on the Efficiency of a Charge Pump","authors":"Ionelia-Bianca Brezeanu, Cătălin Botezatu, A. Vasile, G. Brezeanu","doi":"10.1109/SIITME53254.2021.9663632","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663632","url":null,"abstract":"This paper targets to provide insights into the topic of integrated charge pump DC-DC converters. Concretely, we analyze the impact of the internal sub-blocks’ characteristics on the efficiency of a charge pump converter. The blocks under discussion are the charge pump core, the oscillator, and the bias generator with an operational amplifier. For this purpose, a charge pump converter, able to meet very high values for efficiency - over 80%, was designed in a CMOS technology. SPICE simulations are used to confirm the theoretical design considerations.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114544599","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}
{"title":"Effective Modeling of Interconnects with Domain Partitioning and Model Order Reduction","authors":"G. Ciuprina, D. Ioan","doi":"10.1109/SIITME53254.2021.9663679","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663679","url":null,"abstract":"This paper is a commented review of our contributions related to the modelling and simulation of interconnects, presented throughout the years in scientific communities that belong mainly to electrical engineering and mathematics. The emphasis is on important topics that we feel that are not yet much used by the electronics packaging community, such as the electric circuit element boundary conditions in the electromagnetic field formulation as well as complexity reduction techniques throughout the modelling flow.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128584007","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}
{"title":"Study on Techniques for the Increase of the Current Carrying Capability of the PCB Tracks","authors":"A. Drumea, C. Marghescu","doi":"10.1109/SIITME53254.2021.9663645","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663645","url":null,"abstract":"The paper investigates some techniques for the increase of the current carrying capabilities of PCB tracks – tinning and soldering of copper wires onto tracks. Such sample boards with tracks of different widths and enhancements were tested at different currents and electrical and thermal measurements were performed. The increase of the current carrying capability and thermal behavior of the PCB tracks are analyzed and some conclusions are presented.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123650235","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}
{"title":"Rechargeable portable battery differentiation based on electrical characterization","authors":"A. Fazakas, M. Purcar","doi":"10.1109/SIITME53254.2021.9663641","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663641","url":null,"abstract":"The collected portable battery waste contains any of alkaline, zinc-carbon or rechargeable Ni-MH batteries. Separating and sorting batteries of different chemistries is an essential part of the recycling process to obtain reduced costs of raw mineral recovery processes and higher purity minerals. This paper presents the extension of the work previously done, where zinc-carbon and alkaline batteries were separated using electrical characterization [1]. The study is extended to differentiate rechargeable Ni-MH batteries from non-rechargeable alkaline and Zinc-Carbon batteries. The work focuses on two approaches: Impedance analysis and charge – self discharge techniques, highlighting the advantages and disadvantages of the two methods","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125606581","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}
A. Mazare, Laurențiu Mihai Ionescu, I. Lita, G. Serban, N. Belu
{"title":"New FPGA design solution using quantum computation concepts","authors":"A. Mazare, Laurențiu Mihai Ionescu, I. Lita, G. Serban, N. Belu","doi":"10.1109/SIITME53254.2021.9663653","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663653","url":null,"abstract":"Quantum computer emulators implemented on FPGA are generally designed to illustrate possible applications in which these concepts can be used - as a method of functional testing of possible applications involving quantum computing. In this paper we try to present another possible use of a quantum computation emulator, proposed by the authors, for the synthesis of circuits in FPGA with superior performance to conventional or parallel design methods. The paper presents a synthesis solution of parallel structures based on concepts from quantum computation emulated on FPGA. As will be seen in the paper, using the solution improves the computation time compared to the conventional method and reduces the number of resources allocated compared to the parallel solution. So, the solution which we propose is somewhere between conventional sequential logic circuit design methods - it has a shorter response time than these and parallel circuit design methods - it provides a smaller number of resources than these. In order to show the advantages of the proposed solution, we presented the implementation of a circuit for determining the parity of a binary function. The solution was implemented using the conventional solution, the parallel solution and the proposed solution using quantum computing concepts. It will show the performance of the proposed solution compared to the other design models.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129370232","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}
R. Negroiu, P. Svasta, M. Buga, A. Spinu Zaulet, C. Ungureanu
{"title":"Realization and Testing of Electrodes for Supercapacitors based on MOFs and Activated Carbon","authors":"R. Negroiu, P. Svasta, M. Buga, A. Spinu Zaulet, C. Ungureanu","doi":"10.1109/SIITME53254.2021.9663655","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663655","url":null,"abstract":"Nanomaterials are the reliable alternative of the future, with great results in industrial applications due to the capabilities they have on the very small particle size, these being of the order of nanometers (up to 100 nm). This small particle size leads to an increase in the active surface, which is quite sought in the development of many industrial applications today. This category of nanomaterials also includes most of the active materials used for making supercapacitor electrodes because having such a small particle size provides a very large active surface allowing storage of a large quantity of electrical charge, but to take advantage of very large active surface of these materials we should take into account a number of parameters regarding the realization conditions of the respective electrodes. Therefore, in this paper we aim to make electrodes with different mass loadings and through different deposition methods. The methods we will use are: spray deposition for thin electrodes and roll-to-roll deposition for thicker electrodes. These methods influence the quality of the electrode obtained and when we talk about quality, we consider that the performance of the material used can be improved by finding a balance on the main aspects mentioned above.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127353156","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}
{"title":"A Non-invasive Diagnosis Tool Based on Hepatorenal Index For Hepatic Steatosis","authors":"G. Simion, Ecaterina Mihailov","doi":"10.1109/SIITME53254.2021.9663680","DOIUrl":"https://doi.org/10.1109/SIITME53254.2021.9663680","url":null,"abstract":"Hepatic steatosis, also known as fatty liver disease (FLD), a condition caused by the fat cells build-up in the liver, is considered one of the most frequent liver abnormalities. Being diagnosed in the early stages can help avoid some serious illnesses like fibrosis, cirrhosis, and hepatocellular carcinoma. Up to this day, the most precise method to detect steatosis is by performing a biopsy of hepatic tissue samples. This paper presents a non-invasive method to detect liver steatosis, by calculating a Hepatorenal Index in the B-Mode Ultrasound images. The results obtained applying the Hepatorenal Index method on a dataset with 55 patients using our developed tool are 94.44% for sensitivity, 100% for specificity, and an overall accuracy of 96,36%.","PeriodicalId":426485,"journal":{"name":"2021 IEEE 27th International Symposium for Design and Technology in Electronic Packaging (SIITME)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114601637","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}