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Thin-film bulk acoustic resonator RF bandpass filter design technique using genetic algorithm

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2 Author(s)
Jeongheum Lee ; Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea ; Hyeongdong Kim

A thin-film bulk acoustic resonator (FBAR) filter design technique based on the genetic algorithm (GA) is proposed. Instead of using the approximate Butterworth-Van Dyke (BVD) model, the GA is used to optimise the structure of each FBAR with its exact analytical impedance expressions. US-PCS Rx/Tx bandpass filters, obtained by the proposed method, exhibit better response than those obtained by the BVD model.

Published in:

Electronics Letters  (Volume:39 ,  Issue: 5 )