Advanced Qualification · A-007 Feedlines and matching · A-007-003-001
What term describes a method used to match a high-impedance transmission line to a lower impedance antenna by connecting the line to the driven element in two places, spaced a fraction of a wavelength on each side of the driven element centre?
- A The stub match
- B The T match
- C The gamma match
- D The omega match
Correct answer: B — The T match. From the official ISED question bank, verified word for word.
Why
The T match works by attaching the feedline to the driven element at two points on either side of the centre, forming a shape that looks like the letter T. 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.