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A hybrid method for the calculation of the resistance and inductance of transmission lines with arbitrary cross sections

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2 Author(s)
Tsuk, M.J. ; Digital Equipment Corp., Andover, MA, USA ; Kong, Jin Au

The frequency-dependent resistance and inductance of uniform transmission lines are calculated with a hybrid technique that combines a cross-section coupled circuit method with a surface integral equation approach. The coupled circuit approach is most applicable for low-frequency calculations, while the integral equation approach is best for high frequencies. The low-frequency method consists in subdividing the cross section of each conductor into triangular filaments, each with an assumed uniform current distribution. The high-frequency method expresses the resistance and inductance of each conductor in terms of the current normal to the surface. An interpolation between the results of these two methods gives very good results over the entire frequency range, even when few basis functions are used. Results for a variety of configurations are shown and are compared with experimental data and other numerical techniques

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:39 ,  Issue: 8 )