High-Order Passive Delay-Based Macromodel for MTLs via Symplectic Integrators

This letter introduces a new approach to obtain passive delay-based macromodels for lossy multiconductor transmission lines. The proposed approach uses the notion of symplectic integrators to obtain fourth-order passive approximations to the exponential matrix with delay extraction. This approach can therefore be considered a generalization to previous delay-extraction-based techniques which adopt second-order approximations to the exponential function.