Hello,
Could anyone review my 2nd order Butterworth HPF design? I have mentioned design details along with schematics and initial results.

Design specifications for 2nd HPF: Cutoff frequency= 100Mhz, Design method: by considering equal component, Input signal= 10V,120MHz, sinosidal.

Design specification for OPAMP: Slew rate= 5V/usec , CL=10pF, ICMR+= 4.5V, ICMR-=1.5V , Vdd=5V, GBW>=5MHz, W/L ratio is mentioned with each transistor.

According to the calculations, it should work but I do not know where I am making mistakes...

Thanks

 

How do you expect to do a 100MHz filter with an opamp that has only a 5MHz Gain-Bandwidth?

 

IMHO a Sisyphean task. You need a better amplifier and a tutorial on why lumped components are inappropriate for VHF designs. In this part of the RF spectrum, it is not uncommon for inductors to behave like capacitors and capacitors to behave like inductors. You should familiarize yourself with microstripline techniques.