Advanced Qualification · A-007 Feedlines and matching · A-007-008-008
What is the term used for an equivalent resistance which would dissipate the same amount of energy as that radiated from an antenna?
- A j factor
- B Antenna resistance
- C K factor
- D Radiation resistance
Correct answer: D — Radiation resistance. From the official ISED question bank, verified word for word.
Why
Radiation resistance is the right term because it represents a notional resistance value that, if placed in a circuit, would waste exactly as much power as the antenna actually sends out as radio waves. 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.