A new time-domain model that enables loss effects on the input impedance of
on-chip transmission lines during switching transients to be accurately ta
ken into account is presented. The model has been specifically developed fo
r use in conjunction with MOS macromodels to predict the electrical behavio
ur of matched CMOS buffers. It solves the problem of mixed frequency/time d
omain analysis by replacing the lines with a lumped time-varying resistor.