Technician 2022-2026T9A01
What is a beam antenna?
C
Answer
Antennas and feed lines
Type
A
An antenna built from aluminum I-beams
B
An omnidirectional antenna invented by Clarence Beam
C
An antenna that concentrates signals in one direction
D
An antenna that reverses the phase of received signals
Answer Notes
A beam antenna, also known as a directional antenna, is designed to focus its radio frequency energy in a specific direction. Just like a flashlight focuses light into a distinct beam, this antenna concentrates radio waves to maximize signal strength in one preferred direction.
Because the energy is concentrated rather than being spread equally in all directions (like an omnidirectional antenna), a beam antenna provides directional "gain." This not only helps your transmitted signal reach further, but it also improves reception by rejecting noise and interference coming from the sides and rear of the antenna.
The incorrect options rely on silly wordplay. There is no such thing as an antenna invented by "Clarence Beam," and while antennas are often made of aluminum tubing, they are not constructed from heavy structural aluminum "I-beams."
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Which of the following describes a type of antenna loading?