I am trying to design a diferrentiator and integrator to work from 10 - 200 MHz, and can't seem to have any luck.  I have tried a single Cap as a highpass filter and have also tried using an Opamp (Gbw = 1.6 GHz).  I would like to use the opamp, but no one seems to have any literature about how to modify the traditional diff./int. opamp design for use at RF frequencies.  Any thoughts?