Potential variables: Cdepl: Depletion capacitance (modulation input signal) Cdiff: Diffusion capacitance (modulation input signal) Parameters: XCJ: Fraction of depletion capacitance considered inside the junction (default value = 1) Level: Transistor modeling level (Ebers-Moll = 1; Gummel-Poon = 2) (default value = 2)