ring119
Newbie level 4
I'm designning a 60GHz push-push VCO in ads. When set the noise ports as differential nodes (@30GHz) in HB noise controller, correct phase noise (pnmx) is given, around -70dBc@1MHz offset. But when set the noise port as single-ended (@60GHz), i got positive pnmx value... I've changed the osc port direction and location, but they didn't work... Is this related to HB simulation setup? Anyone got any idea? Thanks a lot.