A technique is proposed for increasing the computational efficiency of a mixed-mode FDTD ciruit simulator. The FDTD algorithm is coupled to a set of equations which describes both linear and non linear lumped elements. The simulation time step is adaptively adjusted by monitorng the convergence of the Newton-Raphson procedure adopted for the non-linear solution. This considerably speeds up the simulation, with respect to the adoption of a worst-case, fixed time step. The propagation of a high speed digital signal along a transmission lines is presented as an example. Simulation results are compared with SPICE outputs, showing excellent agreement.

Efficient simulation of high speed digital circuits using time adaptive FD-TD technique25th European Microwave Conference, 1995

MEZZANOTTE, Paolo;ROSELLI, Luca;SORRENTINO, Roberto
1995

Abstract

A technique is proposed for increasing the computational efficiency of a mixed-mode FDTD ciruit simulator. The FDTD algorithm is coupled to a set of equations which describes both linear and non linear lumped elements. The simulation time step is adaptively adjusted by monitorng the convergence of the Newton-Raphson procedure adopted for the non-linear solution. This considerably speeds up the simulation, with respect to the adoption of a worst-case, fixed time step. The propagation of a high speed digital signal along a transmission lines is presented as an example. Simulation results are compared with SPICE outputs, showing excellent agreement.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/1036995
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