Combined Model for Calculating Resistance Matrix for Signal Integrity Analysis Considering Losses in Transmission Line Conductors

This paper presents a combined mathematical model for calculating the frequency-dependent resistance matrix of multiconductor transmission lines. The novelty of this model is the combined use of analytic expressions, the model of charge density distribution on the structure surface, and the Wheeler's incremental inductance rule. A block diagram of the proposed general algorithm is provided for a wide frequency range up to 10 GHz. The use of the model allows evaluating the impact of frequency-dependent losses in transmission line conductors on the distortion of the propagated signal. The proposed model is validated on test structures by comparing its results with those obtained from third-party software.