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Scattering parameters characterization of periodically nonuniform transmission lines with a perturbative technique

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Abstract
In this article, a novel procedure for the frequency-domain solution of nonuniform transmission lines (NUTLs) is presented. The procedure is based on a recently proposed perturbative technique, which is proven to be computationally more efficient than standard solution approaches, which are based on line subdivision into uniform cascaded sections. With respect to the original perturbation technique, the procedure proposed here offers more flexibility, as it provides a representation of the NUTL under analysis in terms of S and/or T parameters at its ports. Moreover, it retains the same prediction accuracy at the price of a slight increase in computational burden, which can be mitigated anyway through parallel computing. Furthermore, even without ad hoc (parallel) implementations, the proposed procedure outperforms other approaches to solve differential lines with partially or fully repetitive geometries. Namely, it assures accurate prediction of output quantities with reduced simulation time. This is proven by three application examples, namely, two differential trapezoidal tabbed lines (one with interdigital tabs and one with facing tabs), and a differential microstrip line with a varying common-mode (CM) impedance (as such reducing CM noise). Comparison with full-wave simulations allows assessing the prediction accuracy of the proposed procedure. Comparison with the aforementioned transmission-line-based solutions allows appreciating the enhanced computational efficiency.
Keywords
COMMON-MODE SUPPRESSION, MICROSTRIP LINES, Perturbation methods, Scattering parameters, Transmission line matrix, methods, Impedance, Standards, Computational modeling, Distributed, parameter circuits, Nonuniform transmission lines (NUTLs), perturbative, technique, scattering parameters, scattering transfer parameters, tabbed, lines

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MLA
Liu, Xiaokang, et al. “Scattering Parameters Characterization of Periodically Nonuniform Transmission Lines with a Perturbative Technique.” IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, vol. 62, no. 6, 2020, pp. 2595–603, doi:10.1109/TEMC.2020.2972844.
APA
Liu, X., Wu, X., Grassi, F., Spadacini, G., Vande Ginste, D., & Pignari, S. A. (2020). Scattering parameters characterization of periodically nonuniform transmission lines with a perturbative technique. IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, 62(6), 2595–2603. https://doi.org/10.1109/TEMC.2020.2972844
Chicago author-date
Liu, Xiaokang, Xinglong Wu, Flavia Grassi, Giordano Spadacini, Dries Vande Ginste, and Sergio A. Pignari. 2020. “Scattering Parameters Characterization of Periodically Nonuniform Transmission Lines with a Perturbative Technique.” IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY 62 (6): 2595–2603. https://doi.org/10.1109/TEMC.2020.2972844.
Chicago author-date (all authors)
Liu, Xiaokang, Xinglong Wu, Flavia Grassi, Giordano Spadacini, Dries Vande Ginste, and Sergio A. Pignari. 2020. “Scattering Parameters Characterization of Periodically Nonuniform Transmission Lines with a Perturbative Technique.” IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY 62 (6): 2595–2603. doi:10.1109/TEMC.2020.2972844.
Vancouver
1.
Liu X, Wu X, Grassi F, Spadacini G, Vande Ginste D, Pignari SA. Scattering parameters characterization of periodically nonuniform transmission lines with a perturbative technique. IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY. 2020;62(6):2595–603.
IEEE
[1]
X. Liu, X. Wu, F. Grassi, G. Spadacini, D. Vande Ginste, and S. A. Pignari, “Scattering parameters characterization of periodically nonuniform transmission lines with a perturbative technique,” IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY, vol. 62, no. 6, pp. 2595–2603, 2020.
@article{8686253,
  abstract     = {{In this article, a novel procedure for the frequency-domain solution of nonuniform transmission lines (NUTLs) is presented. The procedure is based on a recently proposed perturbative technique, which is proven to be computationally more efficient than standard solution approaches, which are based on line subdivision into uniform cascaded sections. With respect to the original perturbation technique, the procedure proposed here offers more flexibility, as it provides a representation of the NUTL under analysis in terms of S and/or T parameters at its ports. Moreover, it retains the same prediction accuracy at the price of a slight increase in computational burden, which can be mitigated anyway through parallel computing. Furthermore, even without ad hoc (parallel) implementations, the proposed procedure outperforms other approaches to solve differential lines with partially or fully repetitive geometries. Namely, it assures accurate prediction of output quantities with reduced simulation time. This is proven by three application examples, namely, two differential trapezoidal tabbed lines (one with interdigital tabs and one with facing tabs), and a differential microstrip line with a varying common-mode (CM) impedance (as such reducing CM noise). Comparison with full-wave simulations allows assessing the prediction accuracy of the proposed procedure. Comparison with the aforementioned transmission-line-based solutions allows appreciating the enhanced computational efficiency.}},
  author       = {{Liu, Xiaokang and Wu, Xinglong and Grassi, Flavia and Spadacini, Giordano and Vande Ginste, Dries and Pignari, Sergio A.}},
  issn         = {{0018-9375}},
  journal      = {{IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY}},
  keywords     = {{COMMON-MODE SUPPRESSION,MICROSTRIP LINES,Perturbation methods,Scattering parameters,Transmission line matrix,methods,Impedance,Standards,Computational modeling,Distributed,parameter circuits,Nonuniform transmission lines (NUTLs),perturbative,technique,scattering parameters,scattering transfer parameters,tabbed,lines}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{2595--2603}},
  title        = {{Scattering parameters characterization of periodically nonuniform transmission lines with a perturbative technique}},
  url          = {{http://dx.doi.org/10.1109/TEMC.2020.2972844}},
  volume       = {{62}},
  year         = {{2020}},
}

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