Synthesis of generalised characteristic model for high-speed interconnects using current sources approach

The derivation of an efficient Norton equivalent companion GCM for coupled interconnects in high-speed circuits is presented. The proposed model contains fewer nodes compared to its Thévenin counterpart and hence accelerates the SPICE solution process. An application example with coupled microstrip lines driven by a bipolar ECL OR gate is given to demonstrate the efficiency. Comparison with the FDTD-SPICE simulation results substantiates the validity of this approach.