RadioBanter - View Single Post - EZ WAY 2 CONVERT S-PARAMETERS TO SERIES EQUIVALENT????

January 23rd 05, 06:06 PM

wrote:
Hi,

I'm quite comfortable impedance matching to
large signal series equivalent impedances, when i
get them in data sheets. No problem, even when i
have to extrapolate a bit.

However, sometimes you only get scattering
parameters. So we could use this formula:

Z11=((1+s11)*(1-s22)+s12*s21)/((1-s11)
*(1-s22)-s12*s21)

Etcetera. But i don't wanna do vector
math all the time. And i also don't wanna
graph this gamma on the Smith chart by hand.

So i was wondering if there was a program
out there, that will do this calculation
for you?

Thanks in advance!

Dr. Slick

Years ago I wrote a program in Basic which does exactly that. If I can
find it I will be happy to email it to you.

bob, w6nbi

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