Analysis of Multiconductor Transmission Lines Using the CN-FDTD Method

作者：Honarbakhsh Babak^*; Asadi Shahrooz

来源：IEEE Transactions on Electromagnetic Compatibility, 2017, 59(1): 184-192.

DOI：10.1109/TEMC.2016.2598067

• Crank-Nicolson (CN)
• dispersion
• finite difference time domain (FDTD)
• implicit
• multiconductor transmission line (MCTL)
• stability

The Crank-Nicolson (CN) version of the finitedifference time-domain (FDTD) method is applied to the analysis of multiconductor transmission lines (MCTLs). Stability and dispersion issues are investigated for different cases, including single and multiconductor lossless and lossy lines. It is shown that for MCTLs, stability of the CN-FDTD method is conditioned by the structure of coupling matrices. Sufficient conditions for unconditional stability are derived. Four practical problems are analyzed using the CN-FDTD method and the results are compared to measurements and Leap-Frog method. For the first three cases, it is observed that using the CN method, the Courant number can be increased by the factor of 50 with good agreement with measurement results.

• 出版日期2017-2