Mourad Fakhfakh

Bio: Mourad Fakhfakh is an academic researcher from University of Sfax. The author has contributed to research in topics: Metaheuristic & Current conveyor. The author has an hindex of 17, co-authored 119 publications receiving 1217 citations.

Analog circuit design optimization through the particle swarm optimization technique

Abstract: This paper details the Particle Swarm Optimization (PSO) technique for the optimal design of analog circuits. It is shown the practical suitability of PSO to solve both mono-objective and multiobjective discrete optimization problems. Two application examples are presented: maximizing the voltage gain of a low noise amplifier for the UMTS standard and computing the Pareto front of a bi-objective problem, maximizing the high current cut off frequency and minimizing the parasitic input resistance of a second generation current conveyor. The aptness of PSO to optimize difficult circuit problems, in terms of numbers of parameters and constraints, is shown.

A high performances CMOS CCII and high frequency applications

Abstract: In this paper, we propose an improved translinear based CCII configuration. Heuristic algorithm is used for optimal sizing regarding static and dynamic performances. PSPICE simulations for AMS 0.35 ?m CMOS technology show that the current and voltage bandwidths are respectively 2.6 GHz and 3.9 GHz, and the parasitic resistance at port X (RX) has a value of 18 ? for a control current of 100 ?A. The improved configuration is used as a building block into high frequency design applications: a current controlled oscillator and a tunable fully integrable band pass filter. The oscillator frequency can be tuned in the range of [290---475 MHz] by a simple variation of a DC current. The central frequency of the band pass filter can be varied in the range of [1.22---1.56 GHz] and the quality factor vary in the range [8---306] with a simple variation of a DC current.

Application of swarm intelligence techniques to the design of analog circuits: evaluation and comparison

Abstract: Swarm intelligence (SI) techniques are more and more used by analog designers in order to optimally size their circuits/systems' performances. A particular interest is accorded to the multi-objective algorithms due to the fact that in most cases analog, mixed signal and radio-frequency sizing problems encompass at least two non-commensurable conflicting objectives. In most of the published papers, Pareto fronts are provided, and in the best cases they are compared to the tradeoff fronts obtained using other classical metaheuristics, but in a very subjective way. In this paper we present a comparison that deals with the multi-objective optimal design of analog circuits via the SI technique and other famous metaheuristics. Performance metrics are used to compare the obtained results. The paper argues and shows that SI techniques and particularly the particle swarm optimization technique is a priori the most adequate metaheuristic to use in the field of analog circuit sizing.

Optimizing performances of switched current memory cells through a heuristic

Abstract: Optimally designing switched current (SI) memory cells is a hard task. In addition, it is usually limited to the design of ideal cells. Thus, in this paper we deal with optimizing these cells and precisely real ones using a heuristic. Since SI class AB grounded gate memory cells are well known to be improved cells, we applied the proposed heuristic to design this kind of cells. Also, besides maximizing performances and minimizing famous error sources, we focus on optimally sizing transistors forming switches and bias sources. The optimization procedure, developed with help of C++ software, allows automatic design of the cell. It is also highlighted in the followings.

Computer-aided analysis of electronic circuits: Algorithms and computational techniques

Abstract: Preparing the books to read every day is enjoyable for many people. However, there are still many people who also don't like reading. This is a problem. But, when you can support others to start reading, it will be better. One of the books that can be recommended for new readers is computer aided analysis of electronic circuits algorithms and computational techniques. This book is not kind of difficult book to read. It can be read and understand by the new readers.

The Design of CMOS Radio-Frequency Integrated Circuits: RF CIRCUITS THROUGH THE AGES

Abstract: This expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems. The chapters on low-noise amplifiers, oscillators and phase noise have been significantly expanded as well. The chapter on architectures now contains several examples of complete chip designs that bring together all the various theoretical and practical elements involved in producing a prototype chip. First Edition Hb (1998): 0-521-63061-4 First Edition Pb (1998); 0-521-63922-0