Which type bias circuit you used. Is there closed loop in you bias ciurct. Don,t care the phase margin if no closed loop. And the bias's bandwidth is not related to OP usually. As bias circuit supply DC bias usually.
Which type bias circuit you used. Is there closed loop in you bias ciurct. Don,t care the phase margin if no closed loop. And the bias's bandwidth is not related to OP usually. As bias circuit supply DC bias usually.