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首页> 外文期刊>Metrology and Measurement Systems: Metrologia i Systemy Pomiarowe >INVERSE AND FORWARD SURROGATE MODELS FOR EXPEDITED DESIGN OPTIMIZATION OF UNEQUAL-POWER-SPLIT PATCH COUPLERS
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INVERSE AND FORWARD SURROGATE MODELS FOR EXPEDITED DESIGN OPTIMIZATION OF UNEQUAL-POWER-SPLIT PATCH COUPLERS

机译：用于快速设计优化的逆向和转发代理模型，不平等 - 动力分配补丁耦合器

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摘要

In the paper, a procedure for precise and expedited design optimization of unequal power split patch couplers is proposed. Our methodology aims at identifying the coupler dimensions that correspond to the circuit operating at the requested frequency and featuring a required power split. At the same time, the design process is supposed to be computationally efficient. The proposed methodology involves two types of auxiliary models (surrogates): an inverse one, constructed from a set of reference designs optimized for particular power split values, and a forward one which represents the circuit S-parameter gradients as a function of the power split ratio. The inverse model directly yields the values of geometry parameters of the coupler for any required power split, whereas the forward model is used for a post-scaling correction of the circuit characteristics. For the sake of illustration, a 10-GHz circular sector patch coupler is considered. The power split ratio of the structure is re-designed within a wide range of -6 dB to 0 dB. As demonstrated, precise scaling (with the power split error smaller than 0.02 dB and the operating frequency error not exceeding 0.05 GHz) can be achieved at the cost of less than three full-wave EM simulations of the coupler. Numerical results are validated experimentally.
机译：本文提出了一种用于精确和加速设计优化不等功率分开贴片机的过程。我们的方法旨在识别对应于在所请求频率下操作的电路的耦合器尺寸，并具有所需的功率分流。同时，设计过程应该是计算效率。所提出的方法涉及两种类型的辅助模型（代理）：由一组参考设计构造的逆一个，以及作为功率拆分的函数表示电路S参数梯度的前向一个。比率。反向模型直接产生耦合器的几何参数的值，以获得任何所需的功率分割，而前向模型用于电路特性的后缩放校正。为说明，考虑了一个10GHz圆形部门贴片机。该结构的功率分流比在宽范围内的-6 dB至0 dB中重新设计。如图所示，精确缩放（具有小于0.02 dB的功率分割误差和不超过0.05 GHz的工作频率误差），可以以小于耦合器的三个全波EM模拟的成本实现。实验验证了数值结果。

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