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Passive Closed-Form Transmission Line Macromodel Using Method of Characteristics

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2 Author(s)
Dounavis, A. ; Western Ontario Univ., London ; Pothiwala, V.A.

This paper presents an efficient passive time-domain macromodeling algorithm for distributed lossy transmission lines based on the generalized method of characteristics (MoC). A new theorem is described that specifies sufficient conditions to guarantee the passivity of the MoC by construction. A key feature of the proposed methodology is that the curve fitting to realize the MoC depends only on the per-unit-length (p.u.l.) parameters and not on the discretization of the macromodel. Thus, with the knowledge of the rational functions derived from the p.u.l. parameters, the MoC can be formulated in a closed-form manner for any line length while ensuring passivity.

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Advanced Packaging, IEEE Transactions on  (Volume:31 ,  Issue: 1 )