Given a source (output voltage and impedance), with a stray capacitance to
ground that is to drive the input of an amplifier with a stray capacitance
to ground, what is the coupling network that gives the largest
gain-bandwidth product?

I am familiar with shunt and series peaking. I also know how to analyze a given four-terminal coupling network. Somewhere in the back of my mind, I remember that there was a theoretical maximum bandwidth that could be achieved. I do not, however, remember how to obtain such a theoretical result.

In principle, series peaking gives a bigger bandwidth than shunt peaking because it separates the two stray capacitances. The question can be asked as what is a coupling configuration that can give significant improvement over series peaking? How do you approach such a problem?

Bill

I am familiar with shunt and series peaking. I also know how to analyze a given four-terminal coupling network. Somewhere in the back of my mind, I remember that there was a theoretical maximum bandwidth that could be achieved. I do not, however, remember how to obtain such a theoretical result.

In principle, series peaking gives a bigger bandwidth than shunt peaking because it separates the two stray capacitances. The question can be asked as what is a coupling configuration that can give significant improvement over series peaking? How do you approach such a problem?

Bill