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Open AccessArticle

Parameter Extraction for Equivalent Circuit Model of RF Devices Based on a Hybrid Optimization Method

Key Lab of RF Circuits and Systems of Ministry of Education, School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
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Electronics 2019, 8(10), 1133; https://doi.org/10.3390/electronics8101133
Received: 6 September 2019 / Revised: 27 September 2019 / Accepted: 28 September 2019 / Published: 8 October 2019
(This article belongs to the Section Circuit and Signal Processing)
One major difficulty of parameter extraction for an equivalent circuit lies in applying an optimization algorithm to efficiently approach the global minimum. Traditional genetic algorithm (GA) is able to find the global minimum but it has very low convergence rate. On the other hand, direct search method may be easily trapped in local minima. In this work, an improved parameter extraction method which is capable of effectively performing the global minimum search is proposed. This method combines GA and Powell’s method to efficiently determine circuit elements of an equivalent circuit model. A spiral inductor and an interdigital capacitor are used as design examples to illustrate the extraction procedure and validate the proposed hybrid method. View Full-Text
Keywords: parameter extraction; Powell’s method; genetic algorithm; equivalent circuit; spiral inductor; interdigital capacitor parameter extraction; Powell’s method; genetic algorithm; equivalent circuit; spiral inductor; interdigital capacitor
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Guan, Z.; Zhao, P.; Lao, Q.; Wang, X.; Wang, G. Parameter Extraction for Equivalent Circuit Model of RF Devices Based on a Hybrid Optimization Method. Electronics 2019, 8, 1133.

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