Basic Qualification · B-006 Feedlines and antenna systems · B-006-007-007
Quel est le diagramme de rayonnement tridimensionnel d'une antenne isotrope?
- AUne demi-sphère
- BUne sphère
- CUn tore (une forme de beignet)
- DUne forme de coeur
Correct answer: B — Une sphère. Question tirée de la banque officielle d'ISDE.
Why
An isotropic radiator is a theoretical antenna that radiates energy equally in every direction, creating a three-dimensional pattern shaped like a perfect sphere. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.
Drill B-006 — free, no account