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Inverse modeling for fast design optimization of small-size rat-race couplers incorporating compact cells

机译:逆模型可快速优化包含紧凑型单元的小型鼠类耦合器

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In the paper, a framework for computationally-efficient design optimization of compactrnrat-race couplers (RRCs) is discussed. A class of hybrid RRCs with variablernoperating conditions is investigated, whose size reduction is obtained by replacingrnordinary transmission lines with compact microstrip resonant cells (CMRCs). Ourrnapproach employs a bottom-up design strategy leading to the development of compactrnRRCs through rapid design optimization of its building blocks and a subsequentrnfine tuning to account for parasitic cross-coupling effects. The fundamental componentrnof the proposed method is an inverse CMRC surrogate model, covering a widernrange of cell electrical parameters, and enabling a convenient adjustment of couplerrnbandwidth. Having the surrogate model established, it is possible to produce close-tooptimumrnCMRC dimensions at a negligible computational cost. The subsequentrncorrection step requires only up to two electromagnetic simulations of the CMRC.rnThe proposed method is demonstrated by designing an RRC for several operationalrnbandwidths. Experimental results are also provided.
机译:在本文中,讨论了用于紧凑型鼠-种族耦合器(RRC)的计算有效设计优化的框架。研究了一类具有可变操纵条件的混合RRC,通过用紧凑的微带谐振单元(CMRC)代替普通的传输线来减小其尺寸。 Ourrnapproach采用了一种自下而上的设计策略,可通过对其构件的快速设计优化以及随后的微调来解决寄生交叉耦合效应,从而开发紧凑型RRC。所提出的方法的基本组成部分是一个逆CMRC替代模型,它涵盖了更广泛的小区电参数范围,并能够方便地调整耦合带宽。建立替代模型后,可以以可忽略的计算成本生成接近最佳的CMRC尺寸。后续的校正步骤最多只需要对CMRC进行两次电磁仿真。通过为几种工作带宽设计RRC证明了所提出的方法。还提供了实验结果。

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