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electric length - RF Cafe Forums

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

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.

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

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 frequency

ang[s21] at 1 ghz = -20 degrees
angl[s21] at 1.1 ghz = -25 degrees

Td=(25-20)/((360 deg/cycle)*100MHz) = 138 pS electrical length

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Posted  11/12/2012
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