Do you use the Return ratio or Bode's for loop gain design?

[Markie]

bodes return ratio

In simulation, DB(Vout/Vin) is enough?

The designers who I knows all just use traditional methods to simulate the loop gain. I just wondered.

Can any body tell me the return ratio useful to my analog work?

 

[yeewong_su]

loop gain return ratio

You should simulation the loopgain PM and GM
Of cause. The return ratio f is be noticed.