Advanced Qualification · A-007 Feedlines and matching · A-007-009-009
Une section de guide d'onde :
- Aagit comme un filtre passe-bas
- Bagit comme un filtre coupe-bande
- Cest légère et facile à installer
- Dagit comme un filtre passe-haut
Correct answer: D — agit comme un filtre passe-haut. Question tirée de la banque officielle d'ISDE.
Why
A waveguide acts like a high-pass filter because it only allows radio signals above a specific frequency to travel through it, while blocking lower frequencies that are too long to fit inside the metal tube. 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