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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Shape Optimization of a Dielectric Resonator for Improving Its Unloaded Quality Factor
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Shape Optimization of a Dielectric Resonator for Improving Its Unloaded Quality Factor

机译：介质谐振器的形状优化以提高其空载品质因数

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摘要

A novel approach for shape optimization of dielectric resonators is presented with an objective of improving their unloaded quality factor. Shape (level-set) and topology (topology gradient) optimization methods coupled with finite element method are utilized together, which as a result, relaxes the traditional trade-off made between the spurious-free band (isolation) and the high unloaded quality factor of the resonators. The defined cost function is minimized by the proposed iterative coupling between the level-set method and the topology gradient method. The optimized resonator, which improves the unloaded quality factor of about 65% compared with the reference, is then approximated for fabrication. The reference, optimized, and approximated resonators are fabricated and measured. Results from the simulated and the fabricated resonators validate the optimization approach presented in this work.
机译：提出了一种用于介质谐振器形状优化的新颖方法，其目的是提高其空载质量因数。形状（水平集）和拓扑（拓扑梯度）优化方法与有限元方法结合在一起使用，从而缓解了在无杂散带（隔离）和高空载品质因数之间进行的传统折衷谐振器。通过在水平集方法和拓扑梯度方法之间建议的迭代耦合，可以将定义的成本函数最小化。然后，将优化的谐振器近似于制造，该谐振器与参考相比可将空载品质因数提高约65％。参考，优化和近似的谐振器被制造和测量。模拟和制造的谐振器的结果验证了这项工作中提出的优化方法。

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