What can be done to prevent unwanted oscillations in an RF power amplifier?
Tune the stage for minimum loading
Tune both the input and output for maximum power
Install parasitic suppressors and/or neutralize the stage✓Richtige Antwort
Use a phase inverter in the output filter
Erklärung
Unwanted oscillation comes from feedback through the device's internal capacitance and from VHF resonances formed by the leads and components. Parasitic suppressors damp those resonances and neutralization cancels the internal feedback at the operating frequency; detuning or retuning the stage does not remove the cause.