Radio Frequency Numerical Simulation Techniques Based on Multirate Runge-Kutta Schemes

Table 1

Computation times simulation of the RF polar transmitter PA depicted in Figure 6.

Simulation time interval	Univariate time-step integration		Bivariate envelope following methods
	with RK (SPICE)	with MRK	ETS with RK	ETS with MRK
[0,200ns]	39 m 30 s	10 m 08 s	5 m 44 s	32 s
[0,800ns]	>2 h	41 m 55 s	26 m 01 s	2 m 38 s