aishakhan
Newbie level 5

I'm designing this biasing circuit in Cadence Virtuoso, but all the transistors are coming in cutoff region. I've targeted the paper "Design of Voltage–Current Reference Source in CMOSTechnology". I don't understand the reason why, I've kept the width and length as mentioned in the paper, but I don't understand why all transistors are in cutoff, could anyone explain why?