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2015 European Conference on Circuit Theory and Design (ECCTD)最新文献

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LNA noise parameter measurement LNA噪声参数测量
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300071
Bernhard Lehmeyer, Michael T. Ivrlac, J. Nossek
{"title":"LNA noise parameter measurement","authors":"Bernhard Lehmeyer, Michael T. Ivrlac, J. Nossek","doi":"10.1109/ECCTD.2015.7300071","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300071","url":null,"abstract":"Joint measurement of stochastic parameters of a low noise amplifier (LNA), based on output power measurement for input termination impedances is considered. As an advantage of this method the noise parameters can be determined in a quick way for narrow and broad band applications without special equipment. Knowing the noise parameters helps the user designing both matching networks for given low noise amplifiers and for optimizing amplifiers. Four real parameters characterize the amplifier with the noise figure as function of the matching network. About ten different values for input termination impedances also provide an estimation of sensitivity and accuracy of this new method.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"139 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":"126174451","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: 3
Phase noise spectrum of oscillators described by Itô stochastic differential equations 用Itô随机微分方程描述振荡器的相位噪声谱
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300103
M. Bonnin, F. Corinto, F. Bonani, F. Traversa
{"title":"Phase noise spectrum of oscillators described by Itô stochastic differential equations","authors":"M. Bonnin, F. Corinto, F. Bonani, F. Traversa","doi":"10.1109/ECCTD.2015.7300103","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300103","url":null,"abstract":"We present a description in terms of phase and amplitude fluctuations for nonlinear oscillators subject to white Gaussian noise, described by Itô stochastic differential equations. The equations derived for the amplitude and the phase are rigorous, and their validity is not limited to the weak noise limit. We show that using Floquet's theory, a partial decoupling between the amplitude and the phase is obtained. The decoupling can be exploited to describe the oscillator's dynamics solely by the phase variable. The resulting phase reduced model is analyzed, and the asymptotic values of probability density function, auto-correlation matrix and power spectral density are found.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"2010 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":"129998244","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 complete classification of memristor devices 忆阻器器件的完整分类
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300120
F. Corinto, P. Civalleri, L. Chua
{"title":"A complete classification of memristor devices","authors":"F. Corinto, P. Civalleri, L. Chua","doi":"10.1109/ECCTD.2015.7300120","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300120","url":null,"abstract":"Several physical and mathematical models have been proposed to describe all 2-terminal non-volatile memory devices based on resistance switching (i.e. memristors), regardless of the device material and physical operating mechanisms. A complete and precise classification of memristor, including memcapacitor and meminductors as well, is instrumental in matching model parameters to physical phenomena and in boosting applications of memristors in unconventional computing systems. The aim of the paper is to provide a theoretical approach to the various classes of mem-devices (i.e. memristors, memcapacitors and meminductors) as nonlinear dynamical systems whose characteristic curves (i.e. dynamic characteristics) are pinched at the origin when driven by bipolar excitations. This theory provides a practical tool to describe mem-devices developed for non-volatile memory applications and neuromorphic systems.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"6 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":"123909328","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
Reduction of harmonic balance equations through Galerkin's method 用伽辽金法还原谐波平衡方程
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300089
F. Bizzarri, A. Brambilla, L. Codecasa
{"title":"Reduction of harmonic balance equations through Galerkin's method","authors":"F. Bizzarri, A. Brambilla, L. Codecasa","doi":"10.1109/ECCTD.2015.7300089","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300089","url":null,"abstract":"Harmonic balance suffers of the main drawback of requiring prohibitive numerical resources when the simulated circuit leads to waveforms with very sharp variations, since a large number of harmonics has to be used. The main reason is due to the fact that the numerical effort increases as a polynomial function of the number of harmonics. This drawback can be mitigated if peculiar solvers that need to neither store nor LU-factorise the Jacobian matrix related to the harmonic balance problem are used (e.g., GMRES). Another approach is to adopt oversampling, i.e. still “well” evaluating the characteristics of the highly nonlinear devices while using a limited number of harmonics. This aspect is investigated in this paper and, by showing how the harmonic balance is a peculiar version of the more general Galerkin's method, a new version of the latter is introduced that potentially lowers the problem dimensionality. Furthermore it allows us to rigorously introduce and describe an oversampling technique that aids convergence by pushing aliasing effects to the high frequency portion of the spectrum. Its effectiveness is shown through a test circuit and numerical simulations.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"181 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":"123133009","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 fully integrated audio amplifier in flexible a-IGZO TFT technology for printed piezoelectric loudspeakers 用于印刷压电扬声器的柔性A - igzo TFT技术的完全集成音频放大器
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300067
R. Shabanpour, C. Carta, T. Meister, K. Ishida, B. K. Boroujeni, F. Ellinger, N. Münzenrieder, G. Salvatore, L. Petti, G. Tröster
{"title":"A fully integrated audio amplifier in flexible a-IGZO TFT technology for printed piezoelectric loudspeakers","authors":"R. Shabanpour, C. Carta, T. Meister, K. Ishida, B. K. Boroujeni, F. Ellinger, N. Münzenrieder, G. Salvatore, L. Petti, G. Tröster","doi":"10.1109/ECCTD.2015.7300067","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300067","url":null,"abstract":"This paper presents the design, implementation and characterization of an integrated power efficient cascode amplifier in a flexible a-IGZO thin-film transistors (TFTs) with minimum channel lengths of 25 μm. The circuit consists of a two-stage cascode amplifier for the audio baseband amplification and a source-follower as a buffer to drive printed loudspeakers. The proposed amplifier is fabricated on a 50 μm-thick flexible polyimide foil, and characterized with a 20 V dc supply voltage (VDD) and an output load capacitance of 15 pF. The measured voltage gain exceeds 15 dB from 4.5 kHz to 15 dB at 25 kHz. The measured 3 dB bandwidth of the unloaded audio amplifier spans from 2.2 kHz to 60 kHz. The amplifier consumes a dc power of 40 mW and delivers 10 dBV of output signal at the 1 dB compression point; this is sufficient to drive printed piezoelectric loudspeakers. The simulated frequency response of the loaded amplifier shows that the amplifier can drive a wide range of capacitive loads from 15 pF to 500 nF. The simulated 3 dB bandwidth of the amplifier loaded with the printed loudspeaker is 29 kHz.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"33 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":"115285669","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
Confidence intervals at multiconductor transmission lines with stochastic excitations: Stochastic differential equations approach 随机激励下多导体传输线的置信区间:随机微分方程方法
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300057
L. Brancík, E. Kolárová
{"title":"Confidence intervals at multiconductor transmission lines with stochastic excitations: Stochastic differential equations approach","authors":"L. Brancík, E. Kolárová","doi":"10.1109/ECCTD.2015.7300057","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300057","url":null,"abstract":"The paper deals with a method for determining confidence intervals of stochastic responses at multiconductor transmission line (MTL) models with stochastic excitations. It is based on the theory of stochastic differential equations (SDE), namely a linear SDE with the additive noise is formulated to describe the system responses. In place of previous approach in which the moments of stochastic processes were calculated via sample statistics of the sets of individual stochastic trajectories, herein, respective variances are calculated leading to substantial acceleration of the solution. To enable it, differential equations for obtaining first two moments of the stochastic responses are formulated and solved. The verification is done by comparing with the above stated approach, while the Student's t-distribution is utilized for calculating confidence intervals due to the additive noise considered. The simulation results have been obtained by means of the Matlab language.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"11 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":"132334292","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
Design consideration of recent advanced low-voltage CMOS boost converter for energy harvesting 新型能量收集用低压CMOS升压变换器的设计考虑
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300001
Y. Teh, P. Mok
{"title":"Design consideration of recent advanced low-voltage CMOS boost converter for energy harvesting","authors":"Y. Teh, P. Mok","doi":"10.1109/ECCTD.2015.7300001","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300001","url":null,"abstract":"With the emergence of nanoscale material-based energy harvesters such as thermoelectric generator and microbial fuel cells, energy-harvesting-assisted self-powered electronics systems are gaining popularity. The state-of-the-art low-voltage CMOS boost converter, a critical voltage converter circuit for low power energy harvesting sources will be reviewed in this paper. Fundamentals of the boost converter circuit startup problem are discussed and recent circuit solutions to solve this problem are compared and analyzed. Necessary design considerations and trade-offs regarding circuit topology, component and CMOS process are also addressed.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"103 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":"117289858","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: 7
Adaptive sparse matrix indexing technique for simulation of electronic circuits based on λ-calculus 基于λ-微积分的电子电路仿真自适应稀疏矩阵索引技术
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300054
D. Cerny, J. Dobes
{"title":"Adaptive sparse matrix indexing technique for simulation of electronic circuits based on λ-calculus","authors":"D. Cerny, J. Dobes","doi":"10.1109/ECCTD.2015.7300054","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300054","url":null,"abstract":"In this paper, a fundamentally new approach to computer-aided design and simulation of electrical circuits based on a use of λ-calculus for circuit device model representation and dynamic sizeable containers for sparse matrix simulation indexation indices is presented. This approach differs from traditional procedure where the entire simulation was performed over the matrix or matrix system assembled by modified nodal analysis (MNA). Turning device model definitions using λ-calculus to functionals allowed to reduce an effort required for their specification and opened new possibilities for simulation evaluation. Considering MNA matrix as second-order tensor system holding the functional definition of original sparse matrix entries allows to imagine these dependencies as chains with respect to a model definition and global dependencies between their defining inner functions. In this particular case, standard indexing methods would be a waste of memory during a computation, this problem occurs when huge sparse matrices enter the simulation. Therefore, new optimized indexing technique for non-zero matrix entries and variable size container types for those indexation vectors is proposed.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"23 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":"116745697","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
A 100-MHz radio-frequency energy harvester for passively powered devices 用于被动供电设备的100 mhz射频能量采集器
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300087
Chih-Hsien Chou, Ping-Hsuan Hsieh
{"title":"A 100-MHz radio-frequency energy harvester for passively powered devices","authors":"Chih-Hsien Chou, Ping-Hsuan Hsieh","doi":"10.1109/ECCTD.2015.7300087","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300087","url":null,"abstract":"A 100-MHz radio-frequency energy harvester is designed and implemented for passively powered devices. The proposed design achieves high power conversion efficiency over wide input power range by adjusting the effective loading and setting the rectifier's output voltage adaptively. Reconfigurable structure further extends the operating range. As a self-contained energy harvester, the sensitivity is simulated to be -23 dBm which supplies an output voltage of 1.8 V over a 10-Mohm load. More than 30% of power conversion efficiency can be achieved for input available power from -20 dBm to 0 dBm.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"119 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":"116315682","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: 3
Narrowest band-pass digital FIR filters 最窄带通数字FIR滤波器
2015 European Conference on Circuit Theory and Design (ECCTD) Pub Date : 2015-10-19 DOI: 10.1109/ECCTD.2015.7300070
P. Zahradnik, B. Simák, Michal Susta, M. Vlcek
{"title":"Narrowest band-pass digital FIR filters","authors":"P. Zahradnik, B. Simák, Michal Susta, M. Vlcek","doi":"10.1109/ECCTD.2015.7300070","DOIUrl":"https://doi.org/10.1109/ECCTD.2015.7300070","url":null,"abstract":"A closed form design of narrowest possible bandpass finite impulse response filters is presented. The underlaying generating polynomial has equiripple behaviour in two separate intervals. A novel degree equation is introduced. One example demonstrates the functionality of the design procedure.","PeriodicalId":148014,"journal":{"name":"2015 European Conference on Circuit Theory and Design (ECCTD)","volume":"144 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":"132123801","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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