Basic Qualification · B-006 Feedlines and antenna systems · B-006-007-003
What electromagnetic wave polarization does a Yagi antenna have when its elements are parallel to the Earth's surface?
- A Horizontal
- B Elliptical
- C Vertical
- D Circular
Correct answer: A — Horizontal. From the official ISED question bank, verified word for word.
Why
A Yagi antenna creates a horizontal wave because its metal rods, called elements, sit parallel to the ground, forcing the electric field to swing side to side just like the elements themselves. 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.