Voltage Controlled Oscillator (VCO) Tuning

[@Athens1992]

Hello, very informative video about the complementary VCO, one question I to see the open loop gain in nmos or pmos is VCO is simple u just put a differential stb probe and u see the open loop gain, but with complentary VCO how u can break "the open loop", because now you have 2 pairs with negative res.