Multi-hard-objective optimum design of surface acoustic wave duplexers using adaptive differential evolution
Multi-hard-objective optimum design of surface acoustic wave duplexers using adaptive differential evolution
复制标题
采用自适应差分进化的声表面波双工器多硬目标优化设计
DOI：
10.1109/cinti.2014.7028709
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Shoichi Harada
中科院分区：
文献类型：
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作者：
Kiyoharu Tagawa;Akihiro Imamura;Shoichi Harada
本文提出了一种新型的声表面波（SAW）放大器的计算机辅助设计方法，SAW放大器广泛应用于各种移动的通信系统的射频（RF）电路中。SAW换能器所需的频率响应特性由若干必要条件规定。此外，声表面波换能器的频率响应特性取决于其几何结构。所提出的设计方法的主要优点是，它提供了一组最佳的解决方案，或结构，而不是一个单一的解决方案的设计师。因此，设计人员可以选择一个最适合所考虑的应用的解决方案。根据所提出的设计方法，SAW换能器的结构设计被描述为多硬目标优化问题（MHOP），其中多个目标函数中的每一个被限制为小于其上界。然后，为了获得MHOP的非支配可行解的数量，一个新的进化算法的基础上差分进化（DE）。最后，通过分析非支配可行的解决方案，或结构，得到基于DE的算法，合适的结构的SAW滤波器被认为是从不同的角度。
This paper proposes a novel computer-aided design method of Surface Acoustic Wave (SAW) duplexers which are used widely in the modern Radio Frequency (RF) circuits of various mobile communication systems. The desirable frequency response characteristics of a SAW duplexer are specified by a number of necessary conditions. Besides, the frequency response characteristics of the SAW duplexer depends on its geometrical structure. The major advantage of the proposed design method is that it provides the designer with a set of optimal solutions, or structures, instead of a single solution. Therefore, the designer can choose a solution which of them best fits the application under consideration. According to the proposed design method, the structural design of a SAW duplexer is described as a Multi-Hard-objective Optimization Problem (MHOP) in which each of multiple objective functions is restricted to be less than its upper bound. Then, in order to obtain a number of non-dominated feasible solutions for MHOP, a new evolutionary algorithm based on Differential Evolution (DE) is employed. Finally, through analysis of the non-dominated feasible solutions, or structures, obtained by the DE-based algorithm, suitable structures of the SAW duplexer are considered from various viewpoints.