Basic Qualification · B-006 Feedlines and antenna systems · B-006-006-006
How does an antenna tuner compensate for an impedance mismatch in an antenna system?
- A By increasing the conductance of the transmission line
- B By adjusting the resonant frequency of the antenna
- C By adding capacitive or inductive reactance
- D By diverting reflections to a dummy load
Correct answer: C — By adding capacitive or inductive reactance. From the official ISED question bank, verified word for word.
Why
An antenna tuner fixes a mismatch by inserting components that add either capacitive or inductive reactance to cancel out the unwanted reactance already present in the antenna system. 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.