Efficient Time-Domain Analysis of Complicated RF Circuits with the Use of Higher Interpolation Orders

Nowadays, practically all the circuit simulators have the implemented algorithms for numerical solving differentialalgebraic equations constrained by the maximum order of used interpolation polynomials of six. In the paper, it is suggested that a usage of higher interpolation orders can improve the resulting efficiency of the algorithm considerably without endangering its numerical stability. Using the orders of interpolation polynomials up to ten is demonstrated on a sophisticated distributed microwave oscillator.