300-425 · Question #206
An engineer is designing a wireless network for a manufacturing facility that has high steel shelves. Which antenna type must be used?
The correct answer is B. patch. High steel shelving in warehouses creates a challenging RF environment: the metal shelves absorb and reflect signals, creating RF shadows in aisles and significant multipath interference. Patch antennas are semi-directional antennas that focus RF energy in a specific direction…
Question
An engineer is designing a wireless network for a manufacturing facility that has high steel shelves. Which antenna type must be used?
Options
- Aoutdoor omnidirectional
- Bpatch
- Cindoor omnidirectional
- Ddipole
How the community answered
(69 responses)- A4% (3)
- B87% (60)
- C1% (1)
- D7% (5)
Explanation
High steel shelving in warehouses creates a challenging RF environment: the metal shelves absorb and reflect signals, creating RF shadows in aisles and significant multipath interference. Patch antennas are semi-directional antennas that focus RF energy in a specific direction with a narrower beam width (typically 60–90 degrees). This makes them ideal for aiming RF down individual aisles between shelving rows, maximizing coverage where clients actually are while minimizing wasted signal and co-channel interference from reflections. APs with patch antennas are typically mounted at the end of each aisle or on top of shelf rows and aimed along the aisle.
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