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analog IMPLEMENTATION OF NON INTEGER ORDER INTEGRATOR VIA field programmable analog array

IFAC Proceedings Volumes 2006年第11期39卷 107-111页

作者： Riccardo Caponetto Domenico Porto I.E.E.S University of Catania Eng. Faculty Viale A. Doria 6 95125 Catania Italy Automotive Group STMicroelectronics Contrada Blocco Torrazze C.P. 421 95121 Catania Italy

Recently a renewed interest has been devoted to non integer, or fractional, order systems. This is due to the fact that they well model a lot of physical systems and can be usefully applied in the area of automatic control. On drawback, mainly faced in the area of control systems, is related to their practical realization, essentially due to their infinite dimension nature. In this paper it is proposed an analog implementation of a non integer order integrator by using field programmable analog array. The reported example shows the feasibility and reliability of the proposed approach.

关键词： Non integer order system analog implementation field programmable analog array

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programmable design and implementation of a chaotic system utilizing multiple nonlinear functions

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TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES 2010年第4期18卷 647-655页

作者： Kilic, Recai Dalkiran, Fatma Yildirim Erciyes Univ Dept Elect & Elect Engn TR-38039 Kayseri Turkey Erciyes Univ Sch Civil Aviat TR-38039 Kayseri Turkey

In addition to exhibiting a rich variety of bifurcation and chaos via tuning parameters, a chaotic system introduced by Sprott can be modeled and realized with a fixed Main system block and many different changeable nonlinear function, blocks such as piecewise-linear function, cubic function and other trigonometric functions. This system is very suitable for implementing a programmable chaos generator according to its changeable nonlinearity. This paper presents a FPAA (field programmable analog array)-based programmable implementation of this system. Nonlinear function blocks used in this chaotic system are modeled with FPAA programming and a model is rapidly changed for realizing other nonlinear functions.

关键词： field programmable analog array Chaos Chaotic System Mathematical Modeling

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Some Properties of FPAA-based analog Signal Processing Applications

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IFAC Proceedings Volumes 2009年第1期42卷 184-189页

作者： A. Malcher Z. Kidoń Institute of Electronics Silesian University of Technology Gliwice Poland (Tel: +48 32 237 1845) Institute of Electronics Silesian University of Technology Gliwice Poland (Tel: +48 32 237 1451)

field programmable analog arrays (FPAA) offer the electronic equipment designers new possibilities in quick, interactive and flexible design process, simple verifying, prototyping and modifying of many circuit solutions. The detailed research results of the selected parameters of the AN221E04 device delivered by Anadigm ® are presented. Some features not mentioned in the data sheets were noted and analyzed, concerning e.g. the device input and output filters. Based on the examined AN221E04 device the example application of the automatic gain control (AGC) circuit was built. The advantages of this design, its obtainable parameters and the problems involved by application of FPAA are presented in the paper.

关键词： field programmable analog array analog circuits design harmonic distortion anti-aliasing filter dynamic configurability automatic gain control variable gain amplifier (VGA)

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Microelectronic implementations of fractional order integro-differential operators

Microelectronic implementations of fractional order integro-...

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ASME International Design Engineering Technical Conferences/Computers and Information in Engineering Conference

作者： Santamaria, Guillermo E. Valverde, Jose V. Perez-Aloe, Raquel Vinagre, Bias M. Univ Extremadura Sch Ind Engn E-06071 Badajoz Spain

ISBN: (纸本)9780791848067

For practical applications, the fractional order integral and differential operators require to be approximated as stable, causal, minimum-phase integer order systems, which usually leads, in both continuous and discrete domains, to high order transfer functions. Assuming that an approximation of good quality is available for the fractional operator, efficient implementations, in both cost and speed, are required. The fast development of the microelectronics gives us the opportunity of using cheap, accurate, programmable and fast devices for implementing reconfigurable analog and digital circuits. Among these devices, field programmable Gate arrays (FPGAs), Switched Capacitors Circuits (SCCs), and field programmable analog arrays (FPAAs) are used in this paper for the implementation of a fractional order integrator, previously approximated by the recursive Oustaloup's method. The fundamentals of the devices, as well as the design procedures are given, and the implementations are compared considering their simulated frequency responses, the design efforts, and other important issues.

关键词： fractional order operator field programmable Gate array field programmable analog array Switched Capacitor active filter

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Microelectronic Implementations of Fractional-Order Integrodifferential Operators

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JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS 2008年第2期3卷 21301-21301页

作者： Santamaria, Guillermo E. Valverde, Jose V. Perez-Aloe, Raquel Vinagre, Bias M. Univ Extremadura Sch Ind Engn E-06071 Badajoz Spain

For practical applications, the fractional-order integral and differential operators require to be approximated as stable, causal, minimum-phase integer-order systems, which usually leads, in both continuous and discrete domains, to high order transfer functions. Assuming that art approximation of good quality is available for the fractional operator, efficient implementations, in both cost and speed, are required. The fast development of the microelectronics gives us the opportunity of using cheap, accurate, programmable, and fast devices for implementing reconfigurable analog and digital circuits. Among these devices, field programmable gate arrays, switched capacitor circuits, and field programmable analog arrays are used in this paper for the implementation of a fractional-order integrator, previously approximated by recursive Oustaloups method. The fundamentals of the devices as well as the design procedures are given, and the implementations are compared considering their simulated frequency responses, the design efforts, and other important issues.

关键词： fractional order operator field programmable gate array field programmable analog array switched capacitor active filter

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Studying nonlinear dynamical systems on a reconfigurable analog platform

Studying nonlinear dynamical systems on a reconfigurable ana...

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IEEE International Symposium on Circuits and Systems

作者： Odame, K. Twigg, C. M. Basu, A. Hasler, P. E. Georgia Inst Technol Sch Elect & Comp Engn Atlanta GA 30332 USA

ISBN: (纸本)9781424409204

We have developed a field programmable analog array (FPAA) that can be configured to synthesis and analyze a vast variety of circuits. This FPAA is a valuable platform for studying nonlinear dynamics in circuits, as it offers close to the flexibility of computer simulation, but with actual experimental results. We present data from a current mirror, a peak detector, and a second-order section.

关键词： current mirrors field programmable analogue arrays nonlinear dynamical systems nonlinear network analysis peak detectors current mirror field programmable analog array nonlinear dynamics peak detector reconfigurable analog pla peak detectors Nonlinear dynamical systems current mirrors field programmable analog arrays Nonlinear network analysis Nonlinear Dynamics

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Towards a switched current FPAA

Towards a switched current FPAA

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International Conference on Microelectronics

作者： Fakhfakh, Mourad Masmoudi, Siwar Loulou, Mourad Univ Sfax Natl Engn Sch Sfax Tunisia

ISBN: (纸本)9781424418466

It is presented an implementation, at the transistor level, of a field programmable analog array using the switched current technique (SI). programmable macro-cell blocks are designed using the class AB grounded gate memory cell which performances have been already improved regarding to SNR and bandwidth. The configurable blocks can be sampled up to 40MHz. The proposed programmable block necessitates only a two-phase clock.

关键词： field programmable analog array switched current technique class AB grounded gate memory cell CMOS

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Towards a Switched Current FPAA

Towards a Switched Current FPAA

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2007 International Conference on Microelectronics (ICM'07)

作者： Mourad FAKHFAKH Siwar MASMOUDI Mourad LOULOU National Engineering School University of Sfax Tunisia

It is presented an implementation, at the transistor level, of a field programmable analog array using the switched current technique (SI). programmable macro-cell blocks are designed using the class AB grounded gate memory cell which performances have been already improvd regarding to SNR and bandwidth. The configurable blocks can be sampled up to 40MHz. The proposed programmable block necessitates only a two-phase clock.

关键词： field programmable analog array Switched Current Technique Class AB Grounded Gate Memory Cell CMOS

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Built-in-self-testing techniques for programmable capacitor arrays

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JOURNAL OF ELECTRONIC TESTING-THEORY AND APPLICATIONS 2006年第4-6期22卷 449-462页

作者： Laknaur, Amit Durbha, Sai Raghuram Wang, Haibo So Illinois Univ Dept Elect & Comp Engn Carbondale IL 62901 USA

This paper presents efficient built-in-self-testing (BIST) techniques for programmable capacitor arrays (PCAs) on field programmable analog array (FPAA) platforms. The proposed BIST circuits consist of switched-capacitor (SC) integrators and analog window comparators. Taking advantage of FPAA programmable resources, the proposed PCA BIST circuits can be implemented with very small hardware overhead. Also the impact of comparator threshold variations as well as other circuit parasitic effects on the efficiency of the proposed testing method is investigated. Effective circuit techniques along with new comparator designs are presented to minimize the adverse effect of comparator threshold variations. Finally, procedures for using the proposed BIST method to systematically test all PCAs on an FPAA platform are described and experimental results are presented.

关键词： built-in-self-testing field programmable analog array programmable capacitor array analog testing

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analog circuit development system 2

Analog circuit development system

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International Conference on Computer as a Tool

作者： Jankovec, M Topic, M Univ Ljubljana Fac Elect Engn SI-1000 Ljubljana Slovenia

ISBN: (纸本)078037763X

An analog circuit development system as a support in analog circuits design procedure is described. analog circuit can be designed on a personal computer, uploaded to the board via an USB interface and immediately evaluated. The development board is based on Anadigm AN10E40 field programmable analog array (FPAA), which is controlled by a MC68UC908GP32 microcontroller, connected to the USB interface. The board features 4 analog inputs, 4 outputs and 5 selectable input/output lines. The whole system is powered from personal computer over USB 5V power lines by means of a DC-DC converter, so that it does not require any additional power supply. analog circuit design is supported by Anadigm Designer software which also features time domain simulation and filter design tools.

关键词： analog design Switched Capacitor field programmable analog array hardware development

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