Basic Qualification · B-006 Feedlines and antenna systems · B-006-007-005
Polarization of an antenna is determined by:
- A the orientation of the electric field relative to the transmission line
- B the orientation of the magnetic field relative to the Earth's surface
- C the orientation of the electric field relative to the magnetic field
- D the orientation of the electric field relative to the Earth's surface
Correct answer: D — the orientation of the electric field relative to the Earth's surface. From the official ISED question bank, verified word for word.
Why
Polarization describes how the electric part of a radio wave points as it travels, and we define this direction by comparing it to the ground. The full explanation — and one for every question — is in Pro.
Practise this section
Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.