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What's the microwave Sparameter? 
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#1
Jul2613, 02:07 AM

P: 342

i haven't been able to obtain a simple answer



#2
Aug213, 09:52 AM

P: 2



#3
Aug213, 04:56 PM

P: 693

Chapter 13 of this free ebook is on S parameters. Is a good book, by the way. Worth many times the price!
http://www.ece.rutgers.edu/~orfanidi/ewa/ 


#4
Aug213, 08:07 PM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,568

What's the microwave Sparameter?
So its worth is "many times" 0?



#5
Aug413, 09:42 PM

P: 693

yes. I was being a bit silly. sorry!
jason 


#6
Aug413, 09:51 PM

P: 555




#7
Aug413, 10:00 PM

P: 3,898

It is very similar to other port parameters like ABCD, Z, Y, etc. Sparameter deals with incidence and reflected power waves and the 2 port parameters are ##S_{11},\; S_{21},\;S_{12},\;S_{22}## and with certain condition like either the reflected or incident wave is zero etc. Keep that in mind, it's just another parameters.
Most RF device are spec with Sparameters. They are presented either as polar coordinates form where they give you the amplitude and the phase angle, or presented as complex numbers. You plot the parameters on Smith Chart and you can read out Z and Y parameters also. That will make it very easy to design circuits and matching networks. 


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