[SI-LIST] Re: -3dB at S21 graph

Both

-3dB in voltage is 70%
-3dB in power is 50%

Tom Dagostino
Teraspeed(R) Labs
13610 SW Harness Lane
Beaverton, OR 97008
503-430-1065
tom@xxxxxxxxxxxxx
www.teraspeed.com

Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
401-284-1827

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of ma mu
Sent: Wednesday, January 25, 2006 2:17 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] -3dB at S21 graph


Hi all,

  In my insertion loss, S21 graph, I got -3dB loss at 1.5 Ghz. My question
is :
   transmission  at 1.5 Ghz  is 50% or  70%  ?  I thnik 50% . please give me
feedback.

  Ma



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