What antenna type is ideal for a point-to-point network connection between two office buildings across the street?

What antenna type is ideal for a point-to-point network connection between two office buildings across the street?

• A. An omnidirectional antenna.
• B. A dipole in the vertical orientation.
• C. A semidirectional antenna.
• D. A patch antenna.

Answer: (C)

When setting up a point-to-point wireless link, the goal is to focus energy toward the other end to maximize signal strength and minimize interference from other directions. A semidirectional antenna achieves this by concentrating its radiated power in a specific direction, giving you higher gain in the line toward the other building while still offering a reasonably wide beam to make alignment practical. This makes it ideal for a fixed link across the street, where you can aim the antennas at each other and rely on a clear path. An omnidirectional antenna would waste power by radiating in all directions, increasing exposure to interference and reducing the link margin. A vertical dipole tends to produce energy spread around the horizontal plane, which also lowers gain in the target direction. A patch antenna is directional as well, but for a typical across-the-street link, a semidirectional setup provides a good balance of gain and ease of alignment without requiring the narrower, more precise beam of other specialized antennas.

When setting up a point-to-point wireless link, the goal is to focus energy toward the other end to maximize signal strength and minimize interference from other directions. A semidirectional antenna achieves this by concentrating its radiated power in a specific direction, giving you higher gain in the line toward the other building while still offering a reasonably wide beam to make alignment practical. This makes it ideal for a fixed link across the street, where you can aim the antennas at each other and rely on a clear path.

An omnidirectional antenna would waste power by radiating in all directions, increasing exposure to interference and reducing the link margin. A vertical dipole tends to produce energy spread around the horizontal plane, which also lowers gain in the target direction. A patch antenna is directional as well, but for a typical across-the-street link, a semidirectional setup provides a good balance of gain and ease of alignment without requiring the narrower, more precise beam of other specialized antennas.