Basic Qualification · B-006 Feedlines and antenna systems · B-006-006-007
What advantage does a transformer present when used for impedance matching at radio frequencies?
- A It isolates the source from reflections
- B It can be designed to do so over a wide bandwidth
- C It supports larger power than reactive components
- D It provides constant voltage to the load
Correct answer: B — It can be designed to do so over a wide bandwidth. From the official ISED question bank, verified word for word.
Why
A radio frequency transformer can be built to match different impedances across a broad range of frequencies, making it versatile for many bands without needing constant adjustment. The full explanation — and one for every question — is in Pro.
Practise this section
Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.