Advanced Qualification · A-007 Feedlines and matching · A-007-001-003
For an antenna tuner of the "L" type, which of the following statements is false?
- A The antenna output is high impedance
- B The circuit is known as an L-type antenna tuner
- C The circuit is suitable for matching to vertical ground plane antenna
- D The transmitter input is suitable for 50 ohms impedance
Correct answer: C — The circuit is suitable for matching to vertical ground plane antenna. From the official ISED question bank, verified word for word.
Why
The statement "The circuit is suitable for matching to vertical ground plane antenna" is the false one because a basic L-type tuner cannot match the very low impedance of a vertical ground plane to a standard transmitter. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.