Transistor ft and fmax

What are Transistor' f(t) and f(max) and how do we measure them.
Academic articles by Dror Regev on RF related topics, can be found at scholar.google...

[@user-fn4qg1hz4r]

thanks for you sharing. It helps me a lot! ^_^

[@yedacenter5628]

You're welcome 😊

[@Realkaser]

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