Advanced Qualification · A-007 Feedlines and matching · A-007-004-006
Une antenne dipôle demi-onde est normalement alimentée au point où :
- Ala résistance est maximale
- Bl'antenne est résonante
- Cle courant est maximal
- Dla tension est maximale
Correct answer: C — le courant est maximal. Question tirée de la banque officielle d'ISDE.
Why
A half-wave dipole is fed at its centre, where the electrical current flowing through the antenna reaches its highest point while the voltage is at its lowest. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and matching is section A-007 of the Advanced exam: Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.
Drill A-007 — free, no account