Talk:Insertion loss

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Added link to signal reflection199.46.240.168 (talk) 11:13, 20 October 2008 (UTC)DLM[reply]

The Correct definition of Insertion Loss can be found in these places

http://en.wikipedia.org/wiki/S-parameters#Insertion_Loss
http://www.amphenolrf.com/rf_made_simple/techquestions.asp#2
D. M. Pozar, Microwave Engineering, 3rd Ed, New York: Wiley, 2005

This one is incorrect; I don't care if it says .gov on the end. It is only correct in the special case that the input impedance of the device in question is perfectly matched to the source/generator such that there is no reflection looking into port 1.

http://www.its.bldrdoc.gov/fs-1037/dir-019/_2746.htm

Either the definition here should be fixed, or an explanation showing in which engineering circles each definition correctly applies.

128.138.189.160 (talk) 03:02, 5 December 2008 (UTC) http://charon.colorado.edu[reply]

Phew, I thought we had could it really wrong, until I read "It is only correct in the special case that the input impedance of the device in question is perfectly matched to the source/generator such that there is no reflection looking into port 1." Which is what you get (hopefully) in telecoms/datacoms. I haven't time to change it at the moment. Edgepedia (talk) 08:55, 5 December 2008 (UTC)[reply]