•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

#### RF Cafe Software

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

#### Your RF CafeProgenitor & Webmaster

Kirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

 electric length - RF Cafe Forums
 The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Below are all of the old forum threads, including all the responses to the original posts. -- Amateur Radio-- Anecdotes, Gripes & Humor -- Antennas-- CAE, CAD, & Software-- Circuits & Components -- Employment & Interviews -- Miscellany-- Swap Shop-- Systems-- Test & Measurement-- Webmaster

 Post subject: electric length Posted: Tue May 20, 2008 1:34 pm
 Lieutenant

Joined: Tue May 20, 2008 1:31 pm
Posts: 1
hi, someone can help me?
I need found one way to find the electric length using a S parameters. I need need equation to implement in matlab.
thanks

 Post subject: Re: electric length Posted: Thu Jul 09, 2009 12:47 pm
 Colonel

Joined: Wed Apr 08, 2009 11:07 am
Posts: 34
 electrical length of what? If it is well matched and well behaved, like a transmission line, you can figure out the group delay passing thru it by looking at angle[s21].Td=delta phase/delta frequencyang[s21] at 1 ghz = -20 degrees angl[s21] at 1.1 ghz = -25 degreesTd=(25-20)/((360 deg/cycle)*100MHz) = 138 pS electrical length _________________RichMaguffin Microwave Consulting www.MaguffinMicrowave.com

Posted  11/12/2012