Amateur Extra › E7 Practical Circuits › E7B03
E7B03
What circuit is required at the output of an RF switching amplifier?
Pick an answer to check it.
Answer: A. A filter to remove harmonic content
A switching amplifier produces a square-ish waveform rich in harmonics. A filter at the output removes those harmonics so only the desired RF signal is transmitted.
Tip: Switching makes harmonics; filter them out.