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Notes of a researcher : Wireless Communication Research


Research and Development Systems: Wireless Communication and Engineering Systems

Amplification Power and Voltage Calculator ~ dB dBm Watt Volt Amper

 3 dB ≡	 1.414 times the voltage	   (−)3 dB ≡	 damping to the value 0.707
 6 dB ≡	         2 times the voltage	   (−)6 dB ≡	 damping to the value 0.5
10 dB ≡	 3.162 times the voltage	   (−)10 dB ≡	 damping to the value 0.316
12 dB ≡	 4 times the voltage	   (−)12 dB ≡	 damping to the value 0.25
20 dB ≡	      10 times the voltage	    (−)20 dB ≡	 damping to the value 0.1

Using voltage we get: Level in dB: L = 20 × log (voltage ratio)

  6 dB = twice the voltage
12 dB = four times the voltage
20 dB = ten times the voltage
40 dB = hundred times the voltage
 3 dB ≡	 2 times the power	   (−3) dB ≡	 damping to the value 0.5
 6 dB ≡	         4 times the power	   (−6) dB ≡	 damping to the value 0.25
10 dB ≡	 10 times the power	   (−10) dB ≡	 damping to the value 0.1
12 dB ≡	 16 times the power	   (−12) dB ≡	 damping to the value 0.0625
20 dB ≡	      100 times the power	    (−20) dB ≡	 damping to the value 0.01
Using power we get: Level in dB: L = 10 × log (power ratio)
   3 dB = twice the power
   6 dB = four times the power
 10 dB = ten times the power
 20 dB = hundred times the power
If you search for the amplification ratio, given the dB value,
then go to the program dB calculation

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