Title :
Optimal design of three-IDT type SAW filter using local search
Author :
Tagawa, K. ; Tokunaga, Kenji ; Haneda, Hiromasa ; Igaki, T. ; Seki, Satoshi
Author_Institution :
Fac. of Eng., Kobe Univ., Japan
Abstract :
An optimal design approach for surface acoustic wave (SAW) filters is presented. First of all, the structural design of a three-IDT type SAW filter, which consists of three interdigital transducers (IDT) and two reflectors, is formulated as a combinatorial optimization problem. In order to simulate the frequency response of the SAW filter, the least equivalent circuit model of IDT is employed. Then, a new local search technique based on the k-degree-neighborhood is proposed and applied to the optimization problem successfully. The proposed local search is applicable generally to the structural design of various SAW devices.
Keywords :
combinatorial mathematics; equivalent circuits; frequency response; interdigital transducers; optimisation; surface acoustic wave filters; combinatorial optimization problem; frequency response simulation; interdigital transducers; k-degree-neighborhood; least equivalent circuit model; local search; local search technique; optimal design; optimization problem; reflectors; structural design; surface acoustic wave filter; three-IDT type SAW filter; Acoustic transducers; Acoustic waves; Algorithm design and analysis; Design optimization; Equivalent circuits; Frequency response; SAW filters; Substrates; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1185379
