| Citation: | YAN Xuezhi, SHI Ce, ZHAO Yu, et al. Statistical analysis of electromagnetic radiation from random multi-conductor transmission lines[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(1): 7-14. doi: 10.13700/j.bh.1001-5965.2020.0006(in Chinese)
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In this paper, a statistical algorithm based on polynomial chaos expansion and dipole approximation for electromagnetic radiation calculation of interconnected cables with random parameters is proposed.In this method, orthogonal polynomials are used to expand the equation of the multi-conductor transmission line with random coefficients, the current along the transmission line is obtained by combining the boundary conditions, and then the electric dipole approximation and the mirror image method are used to calculate the total radiation caused by the current of the transmission line. Simulation results verify the accuracy of the proposed method, and the computational efficiency is greatly improved compared with the traditional Monte Carlo method. This method has certain reference value for predicting cable radiation field with random parameters, evaluating cable electromagnetic radiation and testing system performance index.
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