aaron_do
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Hi DDC,
you could do a few things.
1) use a differential topology with transformers at input and output to avoid large blocking caps. Or use differential with no gate cap for the cascode and simply switch the cascode.
2) As previously suggested, briefly short the biasing resistor during start-up.
3) Switch the gate voltage of the cascode transistor to either ground (OFF) or bias (ON). Make sure the bias is properly AC grounded, and use a large enough switch to minimize the ON resistance. Of course in this case, your biasing circuit would have to be ON all the time.
regards, Aaron
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