Crosstalk tolerance analysis of coupled-line structures using least square-support vector machine technique

Mohammad G H Alijani; Mohammad H Neshati

doi:10.1038/s41598-023-42728-4

Crosstalk tolerance analysis of coupled-line structures using least square-support vector machine technique

Sci Rep. 2023 Sep 16;13(1):15394. doi: 10.1038/s41598-023-42728-4.

Authors

Mohammad G H Alijani¹, Mohammad H Neshati²

Affiliations

¹ Electrical Department, Ferdwosi University of Mashhad, Mashhad, Iran. malijani@mail.um.ac.ir.
² Electrical Department, Ferdwosi University of Mashhad, Mashhad, Iran.

Abstract

In this paper, crosstalk sensitivity analysis of a microwave coupled-line structure due to the fabrication imperfections is investigated using Least Square-Support Vector Machine (LS-SVM) method. Since LS-SVM uses a set of linear equations instead of a convex quadratic programming problem, the computational cost is extremely reduced compared to that of the well-known Monte Carlo (MC) analysis or even Support Vector Machine (SVM) without decreasing the accuracy. Using this method, the geometrical parameters of the coupled-line are assumed to be randomly distributed using the Latin Hypercube function and the variation range of each parameter is set to ± 50% around its central value. The frequency response of the coupled-line is estimated and compared with those of the measured and simulation ones for a few well-known practical case studies. The results show that the LS-SVM procedure quickly predicts the worst-case crosstalk expectation values and accurately anticipates the probability of obtaining various outcomes of the coupled-line for the specified parameter variation over a wide frequency range.