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Effect of driver size and number of shells on propagation delay in MWCNT interconnects

Effect of driver size and number of shells on propagation de...

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International Conference on Devices and Communications

作者： Duksh, Yograj Singh Kaushik, Brajesh Kumar Sarkar, Sankar Singh, Raghuvir Deptt. of Electronics and Instrumentation Engg. Faculty of Engg. and Tech. M.J.P. Rohilkhand University Bareilly India Department of Electronics and Computer Engineering Indian Institute of Technology Roorkee India School of Electronics Engineering Shobhit University Meerut India

ISBN: (纸本)9781424491902

This paper analyzes the effect of driver size and number of shells on propagation delay for Multi-Walled Carbon Nanotubes (MWCNT) interconnect at 22nm technology node. An equivalent circuit model of MWCNT is used for estimation and analysis of propagation delay. The delay through MWCNT and Cu interconnects are compared for various driver sizes and number of MWCNT shells. The SPICE simulation results show that the MWCNT interconnect has lower propagation delay than Cu interconnects. The delay ratio of MWCNT to Cu decreases with increase in length for different driver size and number of MWCNT shells. However, the delay ratio increases with reduction in number of MWCNT shells. MWCNT is considered to be potential alternative to copper interconnects in future. MWCNT provides significant improvement in propagation delay performance over Copper for long (global) interconnects. © 2011 IEEE.

关键词： Copper

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Optimization of the perimeter doping of ultrashallow p+-n --n- photodiodes

Optimization of the perimeter doping of ultrashallow p+-n --...

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作者： Knežević, T. Suligoj, T. Šakić, A. Nanver, L.K. Department of Electronics Microelectronics Computer and Intelligent Systems Faculty of Electrical Engineering and Computing University of Zagreb Croatia ECTM-DIMES Delft University of Technology Netherlands

ISBN: (纸本)9789532330670

Ultrashallow p+-n--n- silicon photodiodes, fabricated by a pure boron deposition technology, show excellent performance for detection of Deep Ultra Violet (DUV) radiation due to the nanometer deep pn-junctions. The dark current of photodiode is degraded by the damage of the silicon/oxide interface at the diode perimeter region caused by DUV radiation. Reducing the depletion region width across the p+-n --n- junction at the silicon/oxide interface will also invariably increase the electric field, reducing the breakdown voltage and increasing the perimeter component of the junction capacitance. In this paper, the trade-off between the depletion region width, breakdown voltage and junction capacitance is examined for ultrashallow p+-n--n - photodiodes where an additional ultrashallow doped p-region is introduced as an extension to the p-type guard rings. An optimal doping profile is proposed for the added p-region to obtain minimal degradation of electric characteristics for peak doping of 1018 cm3, 5 10 18 cm3 and 5 1019 cm3 at junction depths of 50 nm, 10 nm and 2 nm, respectively, and a distance of 0.5 m between the added p-region and the surrounding n- channel stop. © 2011 MIPRO.

关键词： Photodiodes

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Tuning the low cut-off frequency in multichannel neural recording amplifiers by the on-chip correction DACs

Tuning the low cut-off frequency in multichannel neural reco...

引用

2011 20th European Conference on Circuit Theory and Design, ECCTD 2011

作者： Kmon, P. Grybos, P. Szczygiel, R. Zoladz, M. AGH University of Science and Technology Faculty of Electrical Engineering Automatics Computer Science and Electronics Department of Measurement and Instrumentation al. A. Mickiewicza 30 30-059 Krakow Poland

ISBN: (纸本)9781457706189

This paper presents a design and measurements of multichannel integrated circuits dedicated to recording of neurobiological signals. 64 recording channels have been implemented in a single chip using a commercially available CMOS 180 nm process. A single recording amplifier consumes only 25 μW from 1.8 V supply and occupies 0.13 mm2 of the silicon area. Its main parameters such as the low/high cut off frequencies and the voltage gain are controlled thanks to the on-chip register. User is able to change the low cut off frequency in the 60 mHz - 100 Hz range in each channel independently while the high cut off frequency and the voltage gain can be set to 4.7 kHz / 12 kHz and 139 V/V / 1100 V/V respectively. The input referred noise depends on the bandwidth of the recording channel and is equal to 3.7 μV (100 Hz - 12 kHz) or to 7.6 μV (3 Hz - 12 kHz). This paper deals with problems that are present in a multichannel integrated recording electronics for neurobiology experiments such as: ability to record input signals in the frequency range below a single Hz, and the spread of the cut off frequencies from channel to channel in such systems. Up to our knowledge the solution presented in this paper is the first one reporting the multichannel IC that is able both to record extremely low frequency signals in each channel with a small spread of this parameter from channel to channel. © 2011 IEEE.

关键词： Gain measurement

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Extraction of mobility degradation, effective channel length and total series resistance of NMOS at elevated temperature

Extraction of mobility degradation, effective channel length...

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International Conference on Electrical engineering/electronics, computer, Telecommunications and Information technology

作者： Kiddee, Kunagone Ruangphanit, Anucha Niemcharoen, Surasak Atiwongsangthong, Narin Muanghlua, Rangson National Electronics and Computer Technology Center 112 Thailand Science Park Phahon Yothin Road Klong 1 Klong Luang Pathumthani 12120 Thailand Department of Electronics Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Chalongkrung Rd. Ladkrabang Bangkok 10520 Thailand

ISBN: (纸本)9781457704246

This article describes the extraction of total series resistance, effective channel length and low field effective channel mobility degradation parameter at temperature in the range of 25°C-125°C of NMOS device. The relation of IDS and VGS in a linear region was used with a different of channel length. The procedure is based on the measurement of the transconductance characteristics of MOSFET in the linear region. The transconductance characteristics is determine for the several devices of difference drawn channel length. The results shows that, the effective channel length is increased in a range of 5×10-10 m/°C. The low field mobility degradation parameter is decreased by the factor of 0.733. The total series resistance is increased in the range of 1.4 Ω-μm/°C. The errors between the predicted model and measured of IDS&V GS in linear region is approximately 3%. © 2011 IEEE.

关键词： Transconductance

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X-ray, AFM, UV-VIS-IR analysis of a-Si:H/μc-Si:H supperlattice structure

X-ray, AFM, UV-VIS-IR analysis of a-Si:H/μc-Si:H supperlatt...

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作者： Kolodziej, Andrzej Baranowski, Witold Kusior, Edward Kanak, Jaroslaw Faculty of Electrical Engineering Automatics Computer Science and Electronics AGH University of Science and Technology al. Mickiewicza 30 30-059 Kraków Poland

The use of the cyclic method of the deposition of multilayer amorphous and microcrystalline silicon films, based on the knowledge of a phase transient algorithm for silicon in low temperature conditions (below 250 °C), can give a possibility of creating silicon quantum dot structures. The thickness, crystallographic structure, optical gap as well as film and interface roughnesses of the amorphous Si:H and μc-Si:H dot layer on glass and multicrystalline substrate were systematically studied by atomic force microscopy (AFM), small angle X-ray and UV-VIS-IR technique. It was developed on the base of these measurements that there is the phase transition from amorphous a-Si:H to multinanocrystalline Si structure with 4-15 nm crystallites.

关键词： Atomic force microscopy

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Design of fractional order PID controller using sobol mutated artificial bee colony alogrithm

Design of fractional order PID controller using sobol mutate...

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2011 11th International Conference on Hybrid Intelligent Systems, HIS 2011

作者： Rajasekhar, Anguluri Abraham, Ajith Pant, Millie Department of Electrical and Electronics Engineering National Institute of Technology-Warangal Andhra Pradesh India Faculty of Computer Science and Electrical Engineering VSB - Technical University of Ostrava Czech Republic United States Department of Paper and Pulp Technology Indian Institute of Technology-Roorkee Roorkee 247667 India

ISBN: (纸本)9781457721502

Now-a-days fractional order controllers are replacing integer order controllers in various applications due to their robust mechanism in enhancing the system performance. The only complexity using fractional order controllers is to determine the gain parameters, followed by integral and derivative constant. This article describes the design of Fractional-Order Proportional-Integral-Derivative (FOPID) controller using a newly developed variant of ABC known as Sobol Mutated Artificial Bee Colony (S-ABC). The mutation component of S-ABC is based on quasi random Sobol sequence. Controller synthesis is obtained by minimizing Integral Time Absolute Error (ITAE) criterion. In order to digitally realize the FOPID controller Tustin operator based continuous fraction approximation (CFE) method is used. Simulation results for some real life plants and comparison with other state of art optimization techniques over same problems demonstrate the superiority of proposed approach. © 2011 IEEE.

关键词： Three term control systems

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Fractinal order speed control of DC motor using levy mutated artificial bee colony algorithm

Fractinal order speed control of DC motor using levy mutated...

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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Rajasekhar, Anguluri Kunathi, Pratap Abraham, Ajith Pant, Millie Department of Electrical and Electronics Engineering National Institute of Technology-Warangal Andhra Pradesh India Faculty of Computer Science and Electrical Engineering VSB - Technical University of Ostrava Czech Republic Department of Paper and Pulp Technology Indian Institute of Technology-Roorkee Roorkee 247667 India United States

ISBN: (纸本)9781467301251

In this paper we propose a new technique for designing feedback control of a DC motor speed using fractional order proportional-integral-derivative (FOPID controller). DC motor is often used in robotics and other fields of control and therefore speed control is very important. FOPID controller's parameters are composed of the proportionality constant, integral constant, derivative constant, derivative order and integral order, and its design is more complex than that of conventional integer-order proportional-integral-derivative (PID) controllers. Here the controller synthesis is formulated as a single objective optimization problem and based on Integral Time Absolute Error (ITAE) criterion. A modified Artificial Bee Colony Algorithm is been used to tune the FOPID controller parameters. © 2011 IEEE.

关键词： Probability distributions

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Semi-adaptive feedback active control of MRI noise

Semi-adaptive feedback active control of MRI noise

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40th International Congress and Exposition on Noise Control engineering 2011, INTER-NOISE 2011

作者： Meller, Michal Niedzwiecki, MacIej Tetsu, Hirofumi Kajikawa, Yoshinobu Faculty of Electronics Telecommunications and Computer Science Department of Automatic Control Gdansk University of Technology ul. Narutowicza 11/12 Gdansk Poland Department of Electrical and Electronic Engineering Faculty of Engineering Science Kansai University Suita-shi Osaka 564-8680 Japan

A feedback controller is proposed for cancellation of magnetic resonance imaging (MRI) noise. The design of the controller takes into account specific features of the MRI noise signal. Simulation results show that a c... 详细信息

ISBN: (纸本)9781618392800

关键词： Magnetic resonance imaging

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A parallel Ray Tracing architecture suitable for application-specific hardware and GPGPU implementations

A parallel Ray Tracing architecture suitable for application...

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2011 14th Euromicro Conference on Digital System Design: Architectures, Methods and Tools, DSD 2011

作者： Nery, Alexandre S. Nedjah, Nadia Franca, Felipe M.G. Jozwiak, Lech LAM - Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal Rio de Janeiro Brazil Department of Electronics Engineering and Telecommunications Faculty of Engineering Universidade do Estado Rio de Janeiro Brazil Department of Electrical Engineering - Electronic Systems Eindhoven University of Technology Netherlands

ISBN: (纸本)9780769544946

The Ray Tracing rendering algorithm can produce high-fidelity images of 3-D scenes, including shadow effects, as well as reflections and transparencies. This is currently done at a processing speed of at most 30 frames per second. Therefore, actual implementations of the algorithm are not yet suitable for interactive real-time rendering, which is required in games and virtual reality based applications. Fortunately, the algorithm allows for massive parallelization of its computations. In this paper, we present a parallel architecture for ray tracing based on a uniform spatial subdivision of the scene and exploiting an embedded computation of ray-triangle intersections. This approach allows for a significant acceleration of intersection computations, as well as, a reduction of the total number of the required intersections checks. Furthermore, it allows for these checks to be performed in parallel and in advance for each ray. In this paper we discuss and analyze an ASIP-based implementation using FPGAs and a GPGPU-based parallel implementation of the proposed architecture. The performance of both implementations are reported and compared." © 2011 IEEE.

关键词： Ray tracing

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Set-point control for folded posture of 3-link underactuated gymnastic planar robot: Beyond the swing-up control

Set-point control for folded posture of 3-link underactuated...

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作者： Xin, Xin Liu, Yannian She, Jinhua Guo, Lei Faculty of Computer Science and System Engineering Okayama Prefectural University Okayama 719-1197 Japan School of Computer Science Tokyo University of Technology Hachioji Tokyo 192-0982 Japan School of Instrument Science and Opto-Electronics Engineering Beihang University Beijing 100191 China

ISBN: (纸本)9783902661937

This paper concerns a set-point control for a folded posture of a 3-link gymnastic planar robot moving in the vertical plane with the first joint being passive and the others being active. To realize the goal posture of the kip motion of a gymnast on the high bar, the control objective is to drive the robot from any arbitrary initial state to any arbitrarily small neighborhood of the up-down-down equilibrium point and then balance the robot about that point, where the first link is in the upright position and the second and third links are in the downward position. This paper uses the energy-based control approach and the notion of virtual composite link to design a controller and provides a global motion analysis of the robot. This paper shows that the control toward such a folded posture is different from the swing-up control problem, for which all three links are fully stretched out in the upright position at the goal posture. A new result of this paper is that in addition to some conditions on the control parameters, a constraint on the mechanical parameters of the robot is needed for achieving the set-point control of the folded posture. The simulation results for two 3-link robots are provided to validate the effectiveness of the proposed control law and the necessity of the constraint. © 2011 IFAC.

关键词： Motion analysis

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