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Subject: Re: Transition of a transmission line into a lumped-elements circuit
Date: 4 Nov 2002 14:52:07 GMT
User-Agent: tin/1.4.5-20010409 ("One More Nightmare") (UNIX) (CYGWIN_NT-4.0/1.3.12(0.54/3/2) (i686))
> In my design on MCM-D I need a tranmission line of length lambda/4 at 1 GHz.
> This is too big, so I have to use the lumped-elements equivalent. But now
> is my problem that I'm a newbie in the field, and I just don't know how to
> do it. Does anyone know a good site or article or something that could help
> me with it? It's pretty urgent and I just don't know how to do it. I
> suppose that it isn't that hard, if one only knows how it works :-)
The lumped equivalent can be a Pi or Tee network, e.g.
C --- --- C
The component values are:
L = Z0 / omega
C = 1 / (Z0 * omega)
Z0 = characteristic impedance of the transmission line (eg 50 Ohm),
omega = 2 * Pi * f
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