Crosstalk and impedance analysis for high speed PCB design becomes more and more important due to the high data rate and tightly coupled routing. Traditional circuit-based analysis can not meet the accuracy demand. Three-dimensional (3D) full-wave electromagnetic solver is required to capture the complex 3D PCB environment and the frequency-dependent phenomena. However it is prohibitively expensive to simulate the practical large board cases and the resultant tabulated S-parameter cannot be directly used to quantify the crosstalk level.
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