Inverse and forward surrogate models for expedited design optimization of unequal-power-split patch couplers

• Autorzy: Koziel Slawomir , Bekasiewicz Adrian

Identyfikatory

DOI

10.24425/mms.2019.129578

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

inverse modelling; patch coupler; computer-aided design; forward modelling; unequal-split coupler

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2019
• Tom: Vol. 26, nr 3
• Strony: 463--473
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr., wzory

Twórcy

autor

Koziel Slawomir

• Reykjavik University, School of Science and Engineering, 101 Reykjavik, Iceland

autor

Bekasiewicz Adrian

• Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, G. Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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• [2] Zheng, S., Chan, W.S., Leung, S.H., Xue, Q. (2007). Broadband Butler matrix with flat coupling. Electronics Lett., 43(10), 576-577.
• [3] Zheng, S.Y., Yeung, S.H., Chan, W.S., Man, K.F., Leung, S.H. (2009). Size-reduced rectangular patch hybrid coupler using patterned ground plane. IEEE Trans. Microwave Theory Tech., 57(1), 180-188.
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• [5] Zheng, S.Y., Deng, J.H., Pan, Y.M., Chan, W.S. (2013). Circular sector patch hybrid coupler with an arbitrary coupling coefficient and phase difference. IEEE Trans. Microwave Theory Tech., 61(5), 1781–1792.
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• [9] Kurgan, P., Kitlinski, M. (2011). Doubly miniaturized rat-race hybrid coupler. Microwave Opt. Tech. Lett., 53(6), 1242-1244.
• [10] Bekasiewicz, A., Koziel, S., Zieniutycz, W. (2016). A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth. Microwave and Optical Technology Letters, 58(10), 2287-2291.
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• [15] Koziel, S., Bekasiewicz, A. (2016). Rapid microwave design optimization using adaptive response scaling. IEEE Trans. Microwave Theory Tech., 64(9), 2749-2757.
• [16] Koziel, S., Bandler, J.W. (2015). Rapid yield estimation and optimization of microwave structures exploiting feature-based statistical analysis. IEEE Trans. Microwave Theory Tech., 63(1), 107-114.
• [17] Caenepeel, M., Ferranti, F., Rolain, Y. (2016). Efficient and automated generation of multidimensional design curves for coupled-resonator filters using system identification and metamodels. Int. Conf. Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (CMACD).
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Uwagi

EN

1. The authors would like to thank Computer Simulation Technology GmbH, a Dassault Systèmes Company, Darmstadt, Germany, for making CST Microwave Studio available. This work was supported in part by the Icelandic Centre for Research (RANNIS) Grant 163299051, and by National Science Centre of Poland Grant 2015/17/B/ST6/01857.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).