Extra exam question E7B05

WhyUnwanted oscillations in an RF power amplifier are prevented by installing parasitic suppressors and/or neutralizing the stage. Unwanted oscillations in an RF power amplifier are prevented by installing parasitic suppressors and/or neutralizing the stage, techniques that specifically counteract the unintended feedback paths (through internal capacitance or stray coupling) that let a stage oscillate on its own, answer C. Tuning for minimum loading or for maximum power in both stages doesn't address the underlying feedback path causing instability, and a phase inverter in the output filter isn't a real anti-oscillation technique.