Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Relation between dB loss and percentage loss

  1. Jul 23, 2011 #1
    I want to know generally what the relation between dB loss and percentage loss is. If I want to know what percentage of a signals strength is lost knowing what its dB loss is, how would I accomplish that.

    Thanks.
     
  2. jcsd
  3. Jul 23, 2011 #2

    uart

    User Avatar
    Science Advisor

    For power loss it would be :

    [tex]100 \left( 1 - 10^{\frac{dB}{10}} \right) \,\%[/tex]

    And for voltage loss it would be :

    [tex]100 \left( 1 - 10^{\frac{dB}{20}} \right) \,\%[/tex]


    Where dB here would be negative for signal loss.
     
    Last edited: Jul 23, 2011
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Relation between dB loss and percentage loss
  1. Frequency and losses (Replies: 6)

  2. Copper loss (Replies: 4)

  3. Power loss (Replies: 4)

Loading...