Checking Causality Of Interconnects Through Minimum-Phase And All-Pass Decomposition

Causality check and enforcement is practically important to the performance evaluation for interconnects based on time domain simulation. In this paper one causality check method based on mininium-phase and all-pass decomposition is proposed. Compared with conventional time domain approach, uncertainties from Gibbs error are bypassed. In contrast with conventional frequency domain methods, this method does not require whole frequency band information put by the Hilbert transform process. The effectiveness of propose me hod is demonstrated through numerical examples, as well as measured s-parameters.