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with the increase in the operating frequency of a BJT, the S22 parameter of the transistor:

with the increase in the operating frequency of a BJT, the S22 parameter of the transistor: Correct Answer decreases

With increase in the operating frequency of the transistor, S22 parameter of the transistor decreases. S22 parameter signifies the voltage reflected back to port 2. S22 parameter has a value of about 0.93 at 0.1 GHz frequency and 0.33 at 4 GHz frequency.

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