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Full-wave analysis of coupled lossy transmission lines using multiwavelet-based method of moments

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3 Author(s)
Meisong Tong ; Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA ; G. Pan ; Guangtsai Lei

Full-wave analysis for coupled lossy transmission lines with finite thickness is conducted using a multiwavelet-based method of moments (MBMM). We use the multiscalets with multiplicity r=2 as the basis and testing functions, and take the discrete Sobolev-type inner products to discretize the integral equation and its derivative at the testing points. Since the numerical integration is not needed in the testing procedure, the new approach is faster, yet preserves high accuracy due to the derivative sampling. In the new approach, we compute the incoming fields in the spatial domain directly without resorting to the inverse Fourier transform. Hence, the local coordinate system used to perform the Sommerfeld integral is avoided and the computational cost is reduced remarkably. In addition, a coarser mesh can be used owing to the smoothness of the multiscalets. Numerical examples show that the MBMM speeds up the traditional method of moments 3 ∼ 10 times.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:53 ,  Issue: 7 )