BasicB-006-013-008
Moving the feed point of a quad antenna from a side parallel to the ground to a side perpendicular to the ground will have what effect?
C
Answer
Antennas and feed lines
Type
A
It will change the antenna polarization from vertical to horizontal
B
It will significantly decrease the antenna feed point impedance
C
It will change the antenna polarization from horizontal to vertical
D
It will significantly increase the antenna feed point impedance
Answer Notes
The polarization of a closed loop antenna, such as a quad, is directly determined by the physical placement of its feed point. The electric field aligns with the orientation of the wire where the feed line is attached.
When the feed point is positioned on a wire segment that is parallel to the ground (either the top or bottom wire), the resulting signal is horizontally polarized. Conversely, moving the feed point to a side wire segment that is perpendicular to the ground shifts the electric field, changing the antenna's polarization to vertical.
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You are constructing an HF delta loop antenna. It is oriented with the bottom element parallel to the ground. Where should you locate the feed point for horizontal polarization?
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