##  [Scattering Parameter (S-Parameter)](/scattering-parameter-s-parameter) 

  ##  [Scattering Parameter (S-Parameter)](https://information.quantumdictionary.io/scattering-parameter-s-parameter-0) 

  

 [![Information & Communication Dictionary](/sites/default/files/styles/large/public/2026-01/Information%20%26%20Communication.png.webp?itok=g4emS-T7)](/topic-specific-dictionaries/information-communication)



**Information & Communication Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A frequency-dependent matrix of complex coefficients that characterizes a linear RF multiport by relating incident (forward) and reflected (backward) travelling-wave amplitudes at each port relative to a specified reference impedance Z0; element Sij equals the ratio of the wave emerging from port i to the wave injected into port j with all other ports terminated in matched loads.