folded cascode

I've been reading Ravazi's book Design Of Analog CMOS Integrated Circuits. regarding the end of chapter 3 (Single-Stage Amplifiers), the book presents the folded cascode (Page 90) I had a question, regarding how to determine the state of transistors in large signal analysis. I wrote it in...

Hello, I'm trying to design a folded cascode op amp as shown below. I need a high full power bandwidth, about 90 to 100MHz, and a high gain (>60dB). I reach the required gain but it's hard for me to have a large full power BDW, it doesn't exceed the 500KHz. From the theory, the frequency at...