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

Parameter Extraction for Equivalent Circuit Model of RF Devices Based on a Hybrid Optimization Method
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基于混合优化方法的射频器件等效电路模型参数提取

DOI:
10.3390/electronics8101133
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发表时间:
2019-10
期刊:
影响因子:
2.9
通讯作者:
Wang Gaofeng
Wang Gaofeng
中科院分区:
工程技术3区
文献类型:
--
作者:
Guan Zhimin;Zhao Peng;Lao Qizhong;Wang Xianbing;Wang Gaofeng

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等效电路的参数提取的一个主要困难在于应用优化算法有效地接近全局最小值。传统的遗传算法(GA)能够找到全球最小值,但收敛非常低
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.
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