C-V curve of MOS varactor

[hanikapa]

Does anybody knows, how can I get the C-V curve of MOS varactor in cadence spectre?
Thanks

 

[dick_freebird]

Apply a linear ramp to gate in a transient simulation, calculator
Q=integral (i(gate))
C=Q*v(gate)
plot C with x axis changed to v(gate)

Or run a parametric analysis stepping gate and set C=op(cgg)