The 10th WSEAS International Conference on CIRCUITS is Sponsored by WSEAS and WSEAS Transactions and is Supported by the WSEAS International Working Group on Circuits and Systems, the WSEAS International Working Group on Automatic Control, the WSEAS International Working Group on Power Systems, the WSEAS International Working Group on Electronics, the WSEAS International Working Group on Network Theory.

Monday, July 10, 2006

PLENARY LECTURE 1

Superlattices and High Quality p-i-n a-Si Solar Cells via Superlattice Structures

Professor Argyrios C. Varonides
University of Scranton, USA

[email protected]

Abstract: Amorphous silicon/alloy superlattices provide advantages in solar cell design, such as (a) effective band-gap widening (b) effective mass separation (c) increased open-circuit voltage. The latter increases via Fermi level control, due to p-doping of potential barriers, pushing EF towards the valence bands, with simultaneous widening of the effective band gap, thus leading to potentially higher collection incident wavelengths. The density of gap states in the heavily doped layer is modeled as an exponential whose parameter kT* can be varied by the doping concentrations, while its activation energy saturates at some value. This communication provides (i) a general formulation of the problem at finite temperatures as well as numerical results for specific realizable contacts (ii) detailed treatment of gap states (iii) the neutrality condition (iv) a relation between Fermi level position and open-circuit voltage in the nitride region (superlattice p-region). For a p-(a-SiN: H/a-Si: H)-i (a-Si: H)-n (a-Si: H) sample, we compute the Fermi level position relative to the a-Si: H valence band edge. For low and wide gap thin layers of the order of 2.5 to 3.5 nm, open circuit voltage values are predicted in excess of 1.05 V, and efficiencies are predicted in excess of 12%.

PLENARY LECTURΕ 2:

Intelligent Signal Processing Applied to Recognition and Classification of One and Multidimensional SignalsNetwork

Prof. Wasfy B. Mikhael

School of Electrical Engineering and Computer Science

College of Engineering and computer science

University of Central Florida

Orlando, FL.

USA

[email protected]

Abstract: Recently, due to emerging critical applications such as biomedical, and security applications, the area of intelligent signal processing has been receiving considerable attention. In this lecture, we present an intelligent signal processing system applied to signal recognition and classification. The system employs different structures, multicriteria and multitransform . In addition, principal component analysis in the transform domain is developed which result in further improvement in the recognition accuracy and dimensionality reduction. Experimental results are given which confirm the excellent properties of the proposed approaches.

PLENARY LECTURΕ 3:

Ultrafast All-Optical Signal Processors: Fundaments and Applications

Prof. José Azaña

Institut National de la Recherche Scientifique (INRS)

Montreal, Quebec, CANADA

[email protected]

Abstract: The use of photonic technologies for processing spatial or temporal information in the all-optical domain is a field of growing importance, with a strong potential for interesting applications in such diverse areas as ultrahigh-speed optical telecommunications, ultrafast metrology, optical sensing, microwave engineering, image processing and optical computing, to name only a few. Advantages of processing the information in the alloptical domain include the tremendous available bandwidth and the parallelism intrinsic to the optical approach, which translate into ultrahigh processing speeds that otherwise are not possible. The broad field of Optical Signal Processing is becoming today one of the most active research areas in optics and photonics. Research in this field will have an important impact far beyond the conventional frontiers of photonic technologies. This presentation will provide the audience with an overview of some remarkable recent theoretical and experimental developments in this increasingly important field. The focus of this talk will be on fundamental technologies and techniques for processing and manipulating optical temporal waveforms with features as short as a few hundreds of femtoseconds (corresponding bandwidths of a few terahertz). The recent progress on fiber-based optical pulse shaping technologies, of interest for ultrahigh-speed pulse sequence generation, ultrafast coding/decoding, and all-optical switching, will be reviewed. Recent demonstrations on experimental prototypes of fundamental signal processing blocks, such as real-time optical Fourier transformers or ultrafast optical differentiators, will be also discussed. Applications of some of these all-optical techniques in other fields, e.g. for broadband microwave signal generation and control, will be covered as well. The advantages, current limitations and expected future impact of all-optical information processing technologies will be stressed throughout this presentation.

PLENARY LECTURΕ 4:

Kernel Methods and Applications

Prof. Theodore B. Trafalis

University of Oklahoma School of Industrial Engineering 202 West Boyd, Room 124, Norman, OK 73019, USA
http://www.lois.ou.edu
[email protected]

Abstract: The main objective of this talk is to present the theory of kernel methods and Support Vector Machines and apply those techniques in several areas with special emphasis to severe weather prediction. I will also discuss how kernel methods and neural networks can be used to uncover physically meaningful, predictive patterns in weather radar data that alert to severe weather before the severe weather occurs. Specific indices related to the analysis of severe weather data using kernel methods for rainfall estimation and tornado prediction will be also presented. Results of a recent NSF-ITR multidisciplinary research project under the title: “ A Real Time Mining of Integrated Weather Data” will be also discussed.

SESSION: Circuits and MOS Transistors

Chair : Valeri Mladenov, Argyrios Varonides,

Parametric fault model for rtd based threshold logic gates

Spyros Tragoudas, Manoj Goparaju

534-931

Amorphous Silicon Superlattice Solar cells

Argyrios Varonides

534-801

A New Biasing Technique for the MOS Transistor

Munir A. Al-Absi

534-563

Flexible Digital Scrambler/De-Scrambler System

Munir A. Al-Absi

534-507

Inductive heating facility of half-bridge inverter structure

Hsu Chun-Liang, Chen Cheng-Chuan, Huang Li-Chan Chuang Shieh-Chang

534-242

Chip Level Charge Recovery

Ashish Kumar, Vivek Asthana

534-256

A Low Voltage Low Power 5.7 GHz Variable Gain LNA in 0.18 um CMOS Technology

Hamed Elsimary

534-304

SESSION : Digital Circuits and Reconfigurable Hardware

Chair: Argyrios Varonides, Tomas Dostal

Design of an Ultra Low leakage Buffer Chain

Ashish Kumar

534-255

The Modulo-10 Partition Counter

Serafim Poriazis

534-573

About the FPGA implementation in the electronic equipment for the movement properties telemetry

Mihail Eugen Tanase, Ioan Lie, Dan Lascu, Mihaela Lascu

534-528

RF on-chip test by reconfiguration technique

Jerzy Dabrowski

534-386

Rapid-Prototyping Emulation System using a SystemC Control System Environment and Reconfigurable Multimedia Hardware Development Platform

Dave Carroll, Richard Gallery

534-907

Synchronous design flow for globally asynchronous locally synchronous systems

Jonas Carlsson, Kent Palmkvist, Lars Wanhammar

534-284

State-Space Analytical Modelling for on-Chip Coupling Effects

H J Kadim

534-460

SESSION : Circuits, Systems and CMOS Technologies

Chair: Jerzy Dabrowski, Ioan Lie

Solving the Maximum Subsequence Problem with a Hardware Agents-based System

Octavian Creţ, Zsolt Mathe, Cristina Grama, Lucia Văcariu, Flaviu Roman, Adrian Dărăbant

534-241

Role of Parasitic Capacitors of MOS Transistors in cryptographers

Mohsen Hayati and Seyed Mohsen Yaghoubi

534-247

Low Voltage Low Power CMOS Image Sensor with A New Rail-to-Rail Readout Circuit

Hwang-Cherng Chow and Jen-bor Hsiao

534-495

Bolted Busbar Connections with Slotted Bolt Holes

Raina Tzeneva, Yanko Slavtchev, Valeri Mladenov

534-205

A New Phase-Locked Loop with High Speed Phase Frequency Detector and Enhanced Lock-in

Hwang-Cherng Chow and Nan-liang Yeh

534-517

Noise Characterization of CMOS Image Sensors

Feruglio Sylvain, Pinna Andrea, Chay Cedric, Llopis Olivier, Granado Bertrand, Alexandre Annick, Garda Patrick, Vasilescu Gabriel

534-204

1.5 V Rail-to-Rail Constant Gm CMOS Differential Amplifier

Mirjana Banjevic, Niksa Tadic

534-635

Canonical structures of ARC biquad based on single transimpedance operational amplifiers

Tomas Dostal

534-203

Tuesday, July 11, 2006

PLENARY LECTURΕ 5:

Networked Control Systems: Current Research and Future

Dr T. C. Yang

University of Sussex, England

http://www.sussex.ac.uk/Users/taiyang/

Abstract: Research in Networked Control Systems (NCSs) is motivated by wide applications of NCS, as well as "Future Directions of Control, Dynamics, and Systems" identified in a control expert panel report. Current research activities can be divided into three categories: (1) studies that focus on NCS control system analysis and design, (2) network architecture, protocol and scheduling; and (3) experimental and simulation studies. These research activities and the impact of NCSs on traditional large-scale system control methodologies are briefly reviewed in this presentation. In addition, some possible future research is proposed. NCS is a multi-discipline, very challenging and promising research area.

SESSION : Circuits Systems - Simulations and Implementations

Chair: Ioannis Kyprianidis, T. C. Yang

Some insight into the implementation of a trans-impedance amplifier in CMOS technology using two-port network parameters

Rabin Raut

534-102

A Review of Chaotic circuits, Simulation and Implementation

Cherif Aissi and Demetrios Kazakos

534-727

Robust Companders

Demetrios Kazakos, Kami S. Makki

534-739

Simulation of a Novel Bipolar-FET Negative Differential Resistance Circuits

Mohsen Hayati - Mazdak Rad Malkeshahi

534-200

Organization of a circuit simulator based on waveform - relaxation method

Mohsen Hayati - Mazdak Rad Malekshahi

534-199

Simulation of Electro-Thermal Effects in Device and Circuit

S. Sharifian Attar, M.C.E. Yagoub and F. Mohammadi

534-331

Simulation of balanced surface acoustic wave (SAW) devices incorporating a modified four-port mason's equivalent circuit model

Shuming t. Wang and Mei-hui Chung

534-780

Real Time Room Acoustic Simulation by a Reflection-Diffusion Reverberator

Giovanni Costantini, Massimo Carota, Daniele Casali

534-290

Feature Selecting Model in Automatic Text Categorization of Chinese Financial Industrial News

Tsung-Yen Lee, Pin-Jen Chen, Huey-Ming Lee,

534-718

SESSION : Circuit Systems and Nonlinearity

Chair: I. M. Kyprianidis, Demetrios Kazakos

Antimonotonicity in Chua's Canonical Circuit with a Smooth Nonlinearity

Ioannis Kyprianidis, Maria Fotiadou

534-235

Designing of nonlinear functions using BJT gilbert cells for nonlinear control applications

Ehsan Esfandiary, Farid Sheikholeslam, Behzad Mirzaeian

534-506

An efficient algorithm for finding all DC solutions of nonlinear circuits

Kiyotaka Yamamura, Koki Suda, Wataru Kuroki

534-173

Synchronization of two chaotic Duffing - type electrical oscillators

Ch. K. Volos, I. M. Kyprianidis, and I. N. Stouboulos

534-263

Investigation of single cell delay and delay mismatch in ring oscillator based test structure

Bo Zhou, Amiri Amir Mohammad, Abdelhakim Khouas

534-429

Dynamics of two resistively coupled electric circuits of 4th order

M.S. Papadopoulou,I.M. Kyprianidis, I.N. Stouboulos

534-265

SESSION: Circuits and Converters

Chair : Rabin Raut, Dorina-Mioara Purcaru

BiDirectional DC-to-DC Converter With Extended Voltage Transfer Ratio

Karl H. Edelmoser, Franz C. Zach

534-285

A Multi-Cell Switch-Mode Power-Supply Concept Featuring Inherent Input Voltage Balancing

K. Edelmoser H. Ertl F. Zach

534-373

A New CMOS-DC/DC-Step-Up Converter for up to 2 mW Enduring Loads

Daniel Batas, Klaus Schumacher

534-337

Decay interval of the inductor currents in DC-to-DC fourth-order PWM converters

Elena Niculescu, E.P. Iancu and Dorina-Mioara Purcaru

534-954

A steady-state analysis of PWM SEPIC converter

Elena Niculescu, Dorina-Mioara Purcaru, M. C. Niculescu

534-953

A New Quadratic Boost Converter with PFC Applications

Dan Lascu, Mihaela Lascu, Ioan Lie, Mihail Tănase

534-598

SESSION: Electrics, Electronics and Systems Theory

Chair : Elena Niculescu, Dorina-Mioara Purcaru

Improving the Speed of Electrical Distribution Management Systems through Improved Data Representation Techniques

Mansoor Al-A'ali

594-178

Maple implementation of the Kirchhoff's “Third and fourth laws”

Nicolas Ratier, Maya Markova

534-995

Using Multimedia Techniques in Presenting the Electric Transformer Theory

Valentin Dogaru Ulieru, Costin Cepisca, Ionel Marcel,Cornel Salisteanu, Iulian Udroiu, Cristina Dogaru Ulieru

534-898

A wide-range temperature compensated pressure transducer

M. J. Burke, S. F. Hunt

534-364

A Performant Insulation System for the Stator Winding of the 6 kV Induction Motors

Sonia Degeratu, Mihaela Popescu, Nicu G. Bizdoaca

534-274

Thermal modelling of a thermopneumatic actuator

Fernando Vidal-Verdú, Rafael Navas-González and María Josè Barguero

534-978

An Embedded Approach for Motor Control Boards Design in Mobile Robotics Applications

Claudia Massacci, Andrea Usai, Paolo Di Giamberardino

534-631

Wednesday, July 12, 2006

SESSION : Communication and Signal Processing Systems

Chair : Emmanuel Antonidakis, N.I.Kornilios

Impedance-Transforming Lumped Element Two-Branch 90º Couplers in Case of Type C

Iwata Sakagami, Masafumi Fujii, Tuya Wuren

534-787

A FFT/IFFT Soft IP Generator for OFDM Communication System

Tsung-Han Tsai, Chen-Chi Peng, Tung-Mao Chen

594-185

A novel High Bandwidth Pulse-Width Modulated Inverter

John Chatzakis, Maria Vogiatzaki, Hercules Rigakis, Marios Manitis, Emmanuel Antonidakis

534-543

Research on laser Warning receiver based on sinusoidal transmission grating and high speed DSPs

Zhang Jilong, Tian Erming, Wang Zhibin

534-733

Intelligent signal processing applied to recognition and classification of one and multidimensional signals

Wasfy B. Mikhael, Moataz M. Abdelwahab Manal M. Abdelwahab

534-344

All-Fiber Temporal Differentiators Operating at Terahertz Speeds

Josè Azaña, Mykola Kulishov

534-629

SESSION: Circuit Analysis – Control and Filters

Chair: Georgios Stavrakakis, John Chatzakis

Timing analysis of an embedded memory: spsmall

Weiwen Xu, Remy Chevallier, Emmanuelle Encrenaz-Tiphène and Laurent Fribourg

534-317

PID Controller tuning and implementation aspects for building thermal control

Georgios Kafetzis, Petros Patelis, Evangelos Tripolitakis, Georgios Stavrakakis, Dionysia Kolokotsa, Kostantinos Kalaitzakis

534-276

Portable seven sensor soil analyser

N.I.Kornilios, I. Minadakis, A. Toutountzis, G. Papaioannou

534-508

Statistical Makespan Analysis in Asynchronous Datapath Synthesis

Koji Ohashi,Mineo Kaneko

534-277

Trade-offs in multiplier block algorithms for low power digit-serial FIR filters

Kenny Johansson, Oscar Gustafsson, Lars Wanhammar

534-269

Comparison of the DR of continuous time Gm-C filters using different structures

J. Francisco Fernández-Bootello, Manuel. Delgado-Restituto, A. Rodríguez

Vázquez, Davide Brandano

534-530

Class-AB Square Root Domain Filter

M. A. Al-Gahtani

534-604

SESSION: Circuits Systems- Testing - Optimization and Applications

Chair: Juan Frausto-Solis, Giovanni Costantini

Ultrasonic beamforming with delta-sigma modulators

Ioan Lie, Mihail Eugen Tanase, Dan Lascu, Mihaela Lascu

534-527

The Comparison of Three Common Methods for Reducing the Amount of Dissipation in a Feeder

Mohsen Hayati, Behnam Karami

534-201

Combining Retiming and Sequential Redundancy Addition and Removal for Sequential Logic Optimization

Enrique San Millán, Luis Entrena, Luis Mengibar, Michael García

594-123

Test Scheduling Optimization For Globally Asynchronous Locally Synchronous System-On-Chip Using Genetic Algorithm

P. Sakthivel, P. Narayanasamy

534-967

Applications of novel defected microstrip structures (DMS) in planar passive circuits

Jose Alfredo Tirado-Mendez, Marco Antonio Peyrot-Solis, Hildeberto Jardón-Aguilar, Edgar Andrade-Gonzalez, Mario Reyes-Ayala

534-864

A Simple and Practical Method for Loss Minimization in Restructured Distribution Systems

Navid Taghizadegan, Mohammadreza Feyzi

534-766

Design of Associative Memory for Gray-Scale Images by Multilayer Hopfield Neural Networks

Giovanni Costantini

534-288