What is a common cause for signal attenuation?

The correct answer is C. Metal door. Metal is one of the most significant attenuators and reflectors of RF signals in the 2.4 GHz and 5 GHz bands. A metal door causes severe signal attenuation because metal reflects and absorbs electromagnetic energy, blocking RF propagation effectively. Glass walls and office…

WLAN Design

Question

Options

ACinder block wall
BOffice window
CMetal door
DGlass wall

How the community answered

(40 responses)

B
3% (1)
C
93% (37)
D
5% (2)

Explanation

Metal is one of the most significant attenuators and reflectors of RF signals in the 2.4 GHz and 5 GHz bands. A metal door causes severe signal attenuation because metal reflects and absorbs electromagnetic energy, blocking RF propagation effectively. Glass walls and office windows are largely transparent to Wi-Fi RF signals and cause minimal attenuation. Cinder block walls do attenuate RF signals but typically less severely than solid metal surfaces. In RF site surveys, metal structures (doors, filing cabinets, elevator shafts, HVAC systems) are flagged as major obstacles that reduce signal strength and require AP placement adjustments.

Topics

#signal attenuation#RF propagation#building materials#site survey

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