##  [Insertion Loss](/insertion-loss) 

  ##  [Insertion Loss](https://engineering.quantumdictionary.io/insertion-loss-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The reduction in signal power, usually expressed in decibels, introduced by inserting a component or network into a transmission path; it is the ratio of power delivered to the reference load before insertion to the power delivered after insertion, and is frequency dependent.