What metric is used to express a relative increase or decrease in signal strength?
A.
W
B.
dBm
C.
dB
D.
mW
The Answer Is:
C
This question includes an explanation.
Explanation:
Decibel (dB): A logarithmic unit expressing ratios of power or signal strength. It's used in RF contexts due to the wide range of signal levels encountered.
Examples:
dBm: Decibels relative to one milliwatt (power measurement).
dBi: Decibels relative to an isotropic antenna (antenna gain).
References
Decibel: https://en.wikipedia.org/wiki/Decibel
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