harpoon
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hi lucky,
i think you will struggle to design a standard amp that has a GBW of 19.2GHz ... (6*3.2GHz) ... especially if you want it working over PVT.
however, never say never.
To achieve 3.2GHz, you will need some "tricks" ... e.g. neutralization, inductive peaking etc ... I think you will find such tricks widely discussed in literature.
Note that there are trade-offs ... and whether they are "robust" enough for production.
there are some rule of thumbs ... and i remember willy sansen mentioning something like GBW = ft/16 ... I would say something like ft/10 is a good target.
in any case ... don't read too much into the reported ft numbers ... it should be treated purely as a GUIDE only !
good luck !
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