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Negative resistance circuit for damping an array of coupled FitzHugh-Nagumo oscillators 用于阻尼耦合FitzHugh-Nagumo振荡器阵列的负阻电路
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300082
A. Tamasevicius, E. Adomaitienė, S. Bumelienė, G. Mykolaitis, E. Lindberg
{"title":"Negative resistance circuit for damping an array of coupled FitzHugh-Nagumo oscillators","authors":"A. Tamasevicius, E. Adomaitienė, S. Bumelienė, G. Mykolaitis, E. Lindberg","doi":"10.1109/ECCTD.2015.7300082","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300082","url":null,"abstract":"An analog circuit, based on a negative impedance converter and a capacitor, for damping oscillations in an array of mean-field coupled neuronal FitzHugh-Nagumo (FHN) type oscillators is described. The circuit is essentially a two-terminal feedback controller. When coupled to an array of the FHN oscillators, it stabilizes their unstable steady states. Both, numerical simulations and hardware experiments with the analog electronic circuits have been performed. The results for an array, composed of three mean-field coupled FHN oscillators, are presented.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122158250","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
Realistic path loss estimation for capacitive body-coupled communication 电容体耦合通信的实际路径损耗估计
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300105
Muhammad Irfan Kazim, M. I. Kazim, J. Wikner
{"title":"Realistic path loss estimation for capacitive body-coupled communication","authors":"Muhammad Irfan Kazim, M. I. Kazim, J. Wikner","doi":"10.1109/ECCTD.2015.7300105","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300105","url":null,"abstract":"Realistic estimation of path loss is vital for designing an effective capacitive body-coupled communication system. The estimation based on simplified analytical models, however, results in errors as they do not model capacitive couplers accurately and different body positions. The proposed efficient full-wave electromagnetic (EM) model takes into account the effect of capacitive coupler, electro-physiological properties of tissues in human body, different body positions and environment all together to realistically predict the path loss. A comparison of both approaches is made in this paper, showing the superior performance of the proposed model.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126432302","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: 5
Techniques for reliable and accurate numerical solutions of memristor models 可靠和精确的忆阻器模型数值解的技术
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300123
A. Ascoli, R. Tetzlaff, Zdeněk Biolek, D. Biolek, V. Biolková, Z. Kolka
{"title":"Techniques for reliable and accurate numerical solutions of memristor models","authors":"A. Ascoli, R. Tetzlaff, Zdeněk Biolek, D. Biolek, V. Biolková, Z. Kolka","doi":"10.1109/ECCTD.2015.7300123","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300123","url":null,"abstract":"This work presents techniques for an accurate numerical simulation of memristor models. In physics-based models of extended memristors under indirect excitation, the solution of the state equations is constrained to lie on specific manifolds at all times. A possible algorithm for the determination of numerical solutions to the algebraic differential equation set typical of these systems consists of augmenting the state vector with a novel variable which is invariant on the manifold. Solving the resulting ordinary differential equation problem simplifies the simulation since the algebraic constraint is embedded into the state equations. Regarding mathematical descriptions of generic memristors, where the state may only lie within a closed set, a procedure identifying each undesired event where the state either exceeds the upper bound or goes below the lower one, stopping the current simulation, starting a new one with initial condition set to the violated limit, and finally concatenating the time series of the various simulation sections, ensures a well-behaved simulation run, and, consequently, a reliable numerical solution. Examples from a number of case studies demonstrate that the adoption of the proposed techniques prevents possible issues emerging in classical numerical integration methodologies, resulting in well-behaved state solutions, thus allowing a meaningful exploration of the full potential of memristors in electronic circuit design.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"10575 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127984501","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 power continuous-time delta-sigma ADC with current output DAC 具有电流输出DAC的低功率连续δ - σ ADC
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300096
Niels Marker-Villumsen, I. Jørgensen, E. Bruun
{"title":"Low power continuous-time delta-sigma ADC with current output DAC","authors":"Niels Marker-Villumsen, I. Jørgensen, E. Bruun","doi":"10.1109/ECCTD.2015.7300096","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300096","url":null,"abstract":"The paper presents a continuous-time (CT) Delta-Sigma (ΔΣ) analog-to-digital converter (ADC) using a current output digital-to-analog converter (DAC) for the feedback. From circuit analysis it is shown that using a current output DAC makes it possible to relax the noise requirements of the 1st integrator of the loopfilter, and thereby reduce the current consumption. Furthermore, the noise of the current output DAC being dependent on the ADC input signal level, enabling a dynamic range that is larger than the peak signal-to-noise ratio (SNR). The current output DAC is used in a 3rd order multibit CT ΔΣ ADC for audio applications, designed in a 0.18 μm CMOS process, with active-RC integrators, a 7-level Flash ADC quantizer and current output DAC for the feedback. From simulations the ADC achieves a dynamic range of 95.0 dB in the audio band, with a current consumption of 284 μA for a 1.7 V supply voltage; the resulting figure-of-merit is 262 fJ/conversion.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116357590","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: 6
Use of GPUs in the LHCb trigger 在LHCb触发器中使用gpu
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300055
N. Neufeld, A. Badalov
{"title":"Use of GPUs in the LHCb trigger","authors":"N. Neufeld, A. Badalov","doi":"10.1109/ECCTD.2015.7300055","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300055","url":null,"abstract":"The current strategy to incorporate Graphical Processing Units (GPU) in the LHCb trigger system, with a view on the upgrade of the detector, is presented. Two main aspects are described: the strategy to fit GPUs in the current software framework and the performance of a particular algorithm.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127429622","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 65 nm standard cell library for ultra low-power applications 超低功耗应用的65nm标准电池库
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300041
M. Vohrmann, Saikat Chatterjee, Sven Lütkemeier, T. Jungeblut, Mario Porrmann, U. Rückert
{"title":"A 65 nm standard cell library for ultra low-power applications","authors":"M. Vohrmann, Saikat Chatterjee, Sven Lütkemeier, T. Jungeblut, Mario Porrmann, U. Rückert","doi":"10.1109/ECCTD.2015.7300041","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300041","url":null,"abstract":"This paper describes the development of a 65nm standard cell library designed for building highly energy-efficient digital circuits. In total 43 logic cells and 19 special cells for clock-tree synthesis and place and route purposes are implemented using a commercial 65 nm bulk technology. As a result full-chip implementation of low-power systems operating at ultra-low voltage is feasible. The benefits of this subthreshold cell design are demonstrated by synthesis and analysis of a sample circuit for supply voltages from 250 mV to 1.2 V. Power analysis at gate-level shows an improvement in energy consumption by a factor of 9.25 with a total energy consumption of 11.7pJ per clock cycle in the subthreshold domain.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129888952","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: 9
A least squares method applied to multiphase switched capacitor converters 多相开关电容变换器的最小二乘法
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300043
A. Kushnerov, A. Yakovlev
{"title":"A least squares method applied to multiphase switched capacitor converters","authors":"A. Kushnerov, A. Yakovlev","doi":"10.1109/ECCTD.2015.7300043","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300043","url":null,"abstract":"The paper proposes a new approach to improve the performance of multiphase switched capacitor converters (SCC). It is based on the use of redundant SCC topologies, which are switched forward and backward. The performance is improved by increasing the efficiency and simultaneous reducing the output current ripple. The SCC is considered as an analog computer that solves the system of linear equations by an iterative method. The SCC output voltage is assumed to be constant. This means that the corresponding system has no solution. It is shown that under this condition, the SCC operating in the no-charge mode solves the system by a least-squares method. This allows finding the average current in each SCC topology and consequently, an analytical expression for the equivalent resistance. The obtained theoretical results agree well with the results of simulations.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132507150","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
Reliability schemes for nano-communications 纳米通信的可靠性方案
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300038
Valeriu Beiu, L. Dăuş
{"title":"Reliability schemes for nano-communications","authors":"Valeriu Beiu, L. Dăuş","doi":"10.1109/ECCTD.2015.7300038","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300038","url":null,"abstract":"In this paper we consider consecutive systems as a possible match for certain nano-technologies, as communicating at the nanoscale will need very reliable schemes (for achieving low transmission bit error rates). In fact, nano-technologies like, e.g., molecular, nano-fluidic, nano-magnetic (and even FinFETs), might be used for mapping consecutive systems. We shall start by mentioning previous results for 1D consecutive systems, before focusing on 2D ones. After introducing 2D consecutive systems, the paper will present bounds for estimating their reliability. Simulation results for particular 2D consecutive cases will show that some of the bounds are in fact exact. Finally, comparisons of classical and consecutive schemes will show their advantages, and will be followed by conclusions and future directions of research.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132277278","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 fully-differential OTA in 28 nm UTBB FDSOI CMOS for PGA applications 用于PGA应用的28纳米UTBB FDSOI CMOS全差分OTA
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300114
P. Harikumar, J. Wikner, A. Alvandpour
{"title":"A fully-differential OTA in 28 nm UTBB FDSOI CMOS for PGA applications","authors":"P. Harikumar, J. Wikner, A. Alvandpour","doi":"10.1109/ECCTD.2015.7300114","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300114","url":null,"abstract":"This paper presents a fully-differential operational transconductance amplifier (OTA) designed in a 28 nm ultra-thin box and body (UTBB) fully-depleted silicon-on-insulator (FDSOI) CMOS process. An overview of the features of the 28 nm UTBB FDSOI process which are relevant for the design of analog/mixed-signal circuits is provided. The OTA which features continuous-time CMFB circuits will be employed in the programmable gain amplifier (PGA) for a 9-bit, 1 kS/s SAR ADC. The reverse body bias (RBB) feature of the FDSOI process is used to enhance the DC gain by 6 dB. The OTA achieves rail-to-rail output swing and provides DC gain = 70 dB, unity-gain frequency = 4.3 MHz and phase margin = 68° while consuming 2.9 μW with a Vdd = 1 V. A high linearity > 12 bits without the use of degeneration resistors and a settling time of 5.8 μs (11-bit accuracy) are obtained under nominal operating conditions. The OTA maintains satisfactory performance over all process corners and a temperature range of [-20°C +85°C].","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132557230","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
CNN modeling of nano-structures 纳米结构的CNN建模
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300116
A. Slavova, M. Markova
{"title":"CNN modeling of nano-structures","authors":"A. Slavova, M. Markova","doi":"10.1109/ECCTD.2015.7300116","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300116","url":null,"abstract":"Piezoelectrical material with heterogeneities of nano-inclusions is considered in the case when it is subjected to time harmonic electro-mechanical load. The model is defined by the system of two partial differential equations and the boundary conditions for the generalized stress. On the exterior boundary, boundary conditions prescribe traction on the part of the boundary and prescribe displacement on the complemented part. We construct Cellular Nonlinear/Nanoscale Network (CNN) architecture for the boundary value problem. The dynamics of the obtained CNN model is studied via harmonic balance method. Traveling wave solutions are obtained numerically. The simulations are provided which illustrate the theoretical results. The obtained results are applicable in the field of non-destructive testing and fracture mechanics of multi-functional materials and structural elements based on them.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133786119","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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