jianke
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With the help of the low-frequency h-parameter model, we know that a Common-Collector (CC) amplification circuit amplify current (i.e. voltage gain is about “1”), and a Common-Base (CB) amplification circuit amplify voltage (i.e. current gain is about “1”).
At RF frequency (e.g. 2GHz), RF small-signal model has to be used for the junction capacitance and feedback effect of the BJT transistor. I want to know at this frequency, whether the CC or CB amplification circuit has the same function, just like at low frequency. For example, at 2GHz frequency, a CC amplifier amplify current (voltage gain is about “1”), and a CB amplifier amplify voltage (current gain is about “1”).
I checked several references but can't find the analysis of CC or CB amplification circuit at RF frequency. Doesn't anyone have an idea or any references? Thanks
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