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Power Amplifier for ASK modulation

Other Parts Discussed in Thread: TPA6120A2, THS6012, LMX2571, THS6222

Hello,

I'm looking for an amplifier that can be used as output stage of my ASK modulator.

The ASK signal is obtained by multiplication of a carrier @ 40MHz with a digital sequence (here in the example a square @ 100KHz).

What i need now is an ouput power stage (over a 50 Ohm load) able to provide 0.5W to the load.

What would be your recommandation ?

Thanks in advance

A.