Marianthi N. Pefkianaki, C. Zogogianni, E. Tatakis
{"title":"Investigation of the operational behavior of a DC/DC high step up R2P2 converter","authors":"Marianthi N. Pefkianaki, C. Zogogianni, E. Tatakis","doi":"10.1109/PACET.2017.8259957","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259957","url":null,"abstract":"In this paper, the operational behavior of a DC/DC high step up R2P2 converter is investigated. The main contribution of this paper is the theoretical analysis of the operation of this converter, in continuous conduction mode, for two alternative topologies, as well as the investigation of the voltage and current stresses of the semiconductor elements, for each topology, based on theoretical and experimental results obtained on a laboratory prototype.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"535 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116234148","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}
Fotis Kostarelos, George Charitopoulos, D. Pnevmatikatos
{"title":"Less is more: Increasing the scope of hardware debugging with compression","authors":"Fotis Kostarelos, George Charitopoulos, D. Pnevmatikatos","doi":"10.1109/PACET.2017.8259958","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259958","url":null,"abstract":"In this work we consider the slow and tedious phase of hardware debugging in FPGAs. The process of hardware debugging is normally done via Internal Logic Analyzer (ILA) circuits, which add user observability in internal FPGA signals. The user first defines the target for debugging signal and a triggering condition. Then the ILA stores traces of it in trace buffers, these traces are finally transferred to a host PC for the user to observe. The user also has to consider the limited FPGA memory resources, which result in small-sized trace buffers, an important restriction of hardware debugging. In this paper, we attempt to increase the scope of hardware tracing, i.e. the number of samples written on the trace buffers, with the use of compression. We use the LZW algorithm and find that we can increase the debugging signals number of recorded samples by 90%, i.e. have double the amount of useful data with the same memory usage. On the memory plane we conclude that, for the same number of recorded samples, our architecture uses less than half the resources compared to the standard Xilinx ILA block for signal tracing.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127533101","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 VHDL implementation of the Hummingbird cryptographic algorithm","authors":"Stavroula Mammou, D. Balobas, Nikos Konofaos","doi":"10.1109/PACET.2017.8259979","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259979","url":null,"abstract":"In this paper a VHDL implementation of the Hummingbird lightweight cryptographic algorithm is presented, with the initialization, encryption and decryption processes analyzed and simulated. All these processes include stream cipher and block cipher encryption or decryption techniques, such as transposition with linear transform and substitution with Substitution box (Sbox). These techniques are described in detail, and a full paradigm is presented. The Hummingbird algorithm exploits the extra safety provided by the Linear Feedback Shift Register (LFSR). Such a circuit is fully designed and analyzed, demonstrating a reliable and well performed system that can implement a successful encryption/decryption process. The analysis of both the forward and the reverse procedure are described together with a case study, using suitable programming via the Xilinx Design Suite. Following the analysis of the Hummingbird algorithm, the LFSR circuit and the whole decryption process circuit are designed from scratch. The results of the simulation proved the reliable execution of the algorithm.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121607671","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}
G. Mourgias-Alexandris, M. Moralis‐Pegios, N. Terzenidis, N. Pleros, K. Vyrsokinos
{"title":"Implementation of an all-optical buffer & TimeSlot-interchanger based on integrated SOI delay lines","authors":"G. Mourgias-Alexandris, M. Moralis‐Pegios, N. Terzenidis, N. Pleros, K. Vyrsokinos","doi":"10.1109/PACET.2017.8259961","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259961","url":null,"abstract":"The expected transition towards all-optical packet flow routers, that conform to the strict latency and bandwidth requirements of DataCenter applications, is closely related to the realization of integrated optical delay line buffers, as well as Time Slot Interchangers to provide the necessary contention resolution functions. However, existing delay line implementations, provide limited buffering time, or require large footprint, due to the technology platform. We present integrated Silicon-on-Insulator spiral waveguides as all-optical delay line buffer and time-slot-interchanger. The three different delay lines induce delays of 6.5nsec, 11.3nsec and 17.2nsec, respectively. Two differentially-biased SOA-MZI wavelength converters and integrated delay lines used for optical buffering from 6.5nsec up to 17.2nsec and successful time-slot rearrangement of three data packets, both achieving error-free operation at 10Gb/s.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122055297","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":"Towards an analytical description of a TaO memristor","authors":"A. Ascoli, R. Tetzlaff, V. Ntinas, G. Sirakoulis","doi":"10.1109/PACET.2017.8259948","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259948","url":null,"abstract":"Memristors promise to revolutionise the world of electronics in the years to come. Besides their most popular applications in the fields of non-volatile memory design and neuro-morphic system development, their ability to process signals and store data in the same physical location may allow the conception of novel mem-computing machines outperforming state-of-the-art hardware systems suffering from the Von Neumann bottleneck. The complexity of real-world memristor models, capturing the inherent nonlinearity of the switching kinetics of the nanodevices, is one of the obstacles towards an extensive exploration of the full potential of memristors in nanoelectronics. It is well-known, in fact, that serious convergence issues frequently arise in the numerical simulation of the differential algebraic equation sets modelling the dynamics of real-world memristors. In this work we propose a strategy to develop a general closed-form mathematical representation of a real-world voltage-controlled memristor manufactured by Hewlett Packard Enterprise. The study aims to derive an analytical formula for the memductance of the nano-device under a general voltage input, starting off from the DC case. This research should be of great benefit to circuit designers, which typically use analytical formulas for the first hands-on calculations in the search for circuit topologies satisfying a certain set of specifications.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126609387","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}
E. Chatzianagnostou, G. Dabos, D. Ketzaki, D. Tsiokos, N. Pleros
{"title":"Efficient coupling between thin-film plasmonic and SiN photonic waveguide","authors":"E. Chatzianagnostou, G. Dabos, D. Ketzaki, D. Tsiokos, N. Pleros","doi":"10.1109/PACET.2017.8259959","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259959","url":null,"abstract":"Bringing photonics and electronics into a common integration platform can unleash unprecedented performance capabilities in data communication and sensing applications. Plasmonics were proposed as the key technology that can merge ultra-fast photonics and low-dimension electronics due to their metallic nature and their unique ability to guide light at subwavelength scales. However, inherent high losses of plasmonics impede their practical deployment in PICs. To ameliorate this limitation, selective integration of individual nano-plasmonic devices on low-loss photonic platforms is considered, allowing for enhanced chip-scale functionalities with realistic power budgets. Likewise, highly-efficient and fabrication-tolerant optical interfaces for co-planar plasmonic and photonic waveguides become essential, bridging these two “worlds” and ease combined high-volume manufacturing. In this work, a TM-mode butt-coupled interface for stoichiometric Si3N4 and gold-based thin-film plasmonic waveguides is proposed aiming to be utilized for bio-sensing applications. Following a systematic design process, this new configuration has been analyzed through 3D FDTD numerical simulations demonstrating interface insertion losses of 2dB at the wavelength of 1550 nm, with increased fabrication tolerance compared to silicon based waveguide alternatives.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130086401","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 wireless three dimensional printer for printed circuit board applications","authors":"George Isaakidis, Antonis Spiropoulos, M. Drakaki","doi":"10.1109/PACET.2017.8259976","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259976","url":null,"abstract":"A three dimensional printer using step motors from 3.5-inch disk drives was built. An Arduino microcontroller was in charge of controlling the steppers through the DC drivers and a 3D pen was used as the printing unit. The program was created with the Arduino suite and the design of the drawing with the open source cncjs using g code. For the axes, three disk drives were reassembled to form the X, Y and Z levels. In this paper, the potential of the structure to be used for the creation of printed circuit boards has been explored. The 3D printer has been operated as a Computerized Numerical Control machine, whereas the 3D pen was replaced with a soldering iron for PCB applications. Moreover, the structure was integrated with wireless connectivity, enabled with a Wi-Fi module based on the IEEE 802.11n protocol. The 3D printer will be additionally be used for multi-purpose educational purposes. It provides an opportunity for students to experiment with electronics, learn more about robotic machines, and create one from scratch.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129788886","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}
Dimitris Baros, Konstantinos Bampouras, Parthena Apostolidou, Evangelos Ioannou, N. Papanikolaou
{"title":"Multilevel inverters for motor drives and wireless power transfer applications","authors":"Dimitris Baros, Konstantinos Bampouras, Parthena Apostolidou, Evangelos Ioannou, N. Papanikolaou","doi":"10.1109/PACET.2017.8259952","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259952","url":null,"abstract":"This paper focuses on the incorporation of multilevel inverters in motor drives and wireless power transfer (WPT) applications. The proposed topologies of multilevel inverters are analyzed along with their benefits in corresponding applications. In motor drive systems, the Neutral Point Clamped (NPC) or Diode Clamped topologies with Sinusoidal Pulse Width Modulation (SPWM) as well as Space Vector Pulse Width Modulation (SVPWM) techniques are considered to reduce the harmonic distortion of the output voltage. In addition, in WPT systems the Cascaded H-Bridge inverter (CHB) is considered and analytically described as means to reduce the dv/dt stresses on power switches and also to increase the total power level by exploiting independent generation units. A capacitance detuning method is introduced to achieve Zero Voltage Switching (ZVS) conditions and thus minimization of switching losses. Simulation and experimental results demonstrate the feasibility of the proposed schemes.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127877575","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. Boubaris, E. Karampasis, D. Voglitsis, N. Papanikolaou
{"title":"Experimental survey on active thermoelectric cooling driven by PWM techniques","authors":"A. Boubaris, E. Karampasis, D. Voglitsis, N. Papanikolaou","doi":"10.1109/PACET.2017.8259954","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259954","url":null,"abstract":"This paper presents an experimental survey on active thermoelectric cooling driven by PWM techniques. For this purpose, a test bench was constructed including a thermal closet and all the necessary automation for data acquisition and process. TEC operation is evaluated for various PWM patterns, switching frequencies and duty cycle values, concluding to important findings regarding the efficiency and the cooling capability optimization. Last but not least, EMI issues due to the high frequency operation are reported and discussed.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131918613","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}
D. Prousalis, C. Volos, I. Stouboulos, I. Kyprianidis, D. Frantzeskakis
{"title":"An extended study of extreme multistability in a memristive circuit","authors":"D. Prousalis, C. Volos, I. Stouboulos, I. Kyprianidis, D. Frantzeskakis","doi":"10.1109/PACET.2017.8259992","DOIUrl":"https://doi.org/10.1109/PACET.2017.8259992","url":null,"abstract":"In this paper, the complete study of the phenomenon of extreme multistability in an active BPF-based memristive circuit is presented. To some extent, this work revealed that the extreme multistability phenomenon of coexisting infinitely many attractors' behavior depends not only on memristor initial condition-dependent dynamics, as it has been reported in literature, but also on the rest of circuit's initial condition-dependent dynamics. The circuit's behavior is studied by using well-known tools of nonlinear theory, such as a bifurcation-like diagram, Lyapunov exponents and phase portraits.","PeriodicalId":171095,"journal":{"name":"2017 Panhellenic Conference on Electronics and Telecommunications (PACET)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132224607","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}