What is a beam antenna?

What is a beam antenna?

• 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: (C)

A beam antenna is an antenna designed to concentrate radio frequency signals in a specific direction, significantly enhancing its directional gain. This characteristic is particularly advantageous for long-distance communication, as it allows for stronger signal transmission and reception along its main lobe, reducing interference from signals coming from other directions. This type of antenna can take various forms, including Yagi, log-periodic, and parabolic designs, which are fundamentally constructed to focus energy into a more narrow beam rather than dispersing it evenly in all directions, as omnidirectional antennas do. The increased directionality not only improves communication range but also makes the antenna more efficient by maximizing the power delivered to a specific target area while minimizing noise and interference from unwanted signals. The other options represent misunderstandings or mischaracterizations of what a beam antenna is. An antenna built from aluminum I-beams refers to materials and construction methods but does not define how the antenna functions in terms of signal directionality. The mention of Clarence Beam introduces an incorrect historical reference, as the term "beam antenna" is not linked to any individual. Lastly, the idea of reversing the phase of received signals does not pertain to the fundamental operation of a beam antenna but relates to other types of antennas utilized for different purposes,

A beam antenna is an antenna designed to concentrate radio frequency signals in a specific direction, significantly enhancing its directional gain. This characteristic is particularly advantageous for long-distance communication, as it allows for stronger signal transmission and reception along its main lobe, reducing interference from signals coming from other directions.

This type of antenna can take various forms, including Yagi, log-periodic, and parabolic designs, which are fundamentally constructed to focus energy into a more narrow beam rather than dispersing it evenly in all directions, as omnidirectional antennas do. The increased directionality not only improves communication range but also makes the antenna more efficient by maximizing the power delivered to a specific target area while minimizing noise and interference from unwanted signals.

The other options represent misunderstandings or mischaracterizations of what a beam antenna is. An antenna built from aluminum I-beams refers to materials and construction methods but does not define how the antenna functions in terms of signal directionality. The mention of Clarence Beam introduces an incorrect historical reference, as the term "beam antenna" is not linked to any individual. Lastly, the idea of reversing the phase of received signals does not pertain to the fundamental operation of a beam antenna but relates to other types of antennas utilized for different purposes,