configuration of this circuit elements with mosfets

[kripacharya]

I don't see how simple current mirrors can be used instead of a (more or less ideal) CCCS. I would try with a combination of fully differential OTAs.

or maybe even a CCII ?

 

[electronicman26]

OK, now how I replace CCCS in this 2-port with circuit elements??

 

[electronicman26]

give me a good schematic for a CCCS circuit