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?
- AIt isolates the source from reflections
- BIt can be designed to do so over a wide bandwidth
- CIt supports larger power than reactive components
- DIt 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
Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.
Drill B-006 — free, no account