Bi-objective Memetic Evolutionary Algorithm for Automated Microwave Filter Synthesis

• Published in: Advances in Artificial Intelligence - SBIA 2008 pp. 197 - 206
• Main Authors: Dantas, Maria J. P., da C. Brito, Leonardo, Machado, Paulo C. M., de Carvalho, Paulo H. P.
• Format: Book Chapter
• Language: English
• Published: Berlin, Heidelberg Springer Berlin Heidelberg
• Series: Lecture Notes in Computer Science
• Subjects: automated synthesis; bi-objective classification; bidimensional representation; microwave circuit; two-port building-blocks
• ISBN: 3540881891; 9783540881896
• ISSN: 0302-9743; 1611-3349
• DOI: 10.1007/978-3-540-88190-2_25

This paper presents a Memetic Evolutionary Algorithm for automated compact filter design using two-port building-blocks. In general, complex circuits are designed with suitably arranged two-port elements. The proposed representation scheme uses a proposed Positional Matrix, associating two-port building-blocks, their possible connections (cascade, serial, parallel or hybrid), and their parameters. The candidate designs are processed through suitable bidimensional evolutionary operators. The solutions are evolved using a bi-objective classification process, taking into account the performance evaluations, based on scattering parameters and size of the circuit. Promising candidate solutions are fine-tuned by a local search method. Results demonstrated that two-port compact filters are achieved, using simple microstrip building-blocks for describing the general passive microwave circuits.