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Digital filtering method in conjunction with finite-difference time domain (FDTD) is proposed for solving the convolution integrals due to ground losses in time-domain transmission line equations. Establishment of the digital filter model and combination of digital filtering with FDTD algorithm is introduced. Example has validated the efficiency of this method.
Aimed to solve the time-domain convolution in the analysis of transmission line coupling problems, a digital filtering method is proposed to be used in the one-dimensional FDTD computations. Discrete transfer function that represents features of ground impedance is applied to simplify the convolution. Examples demonstrate that the method is effective when the conductivity of the soil is between 10...
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