[SI-LIST] Re: VNA Measurement Question

Hi Avtaar,
 

We have a PDF ("Ultra-Low Impedance Measurements Using 2-Port Measurements" 
Agilent App Note 5989-5935EN) on this topic that might help:

http://cp.literature.agilent.com/litweb/pdf/5989-5935EN.pdf

 

-- Colin

 

-----Original Message-----

> 

> Avtaar Singh wrote:

> > Hi All!

> > I had to measure the Z profile on a certain power rail on a board. 

> What I

> > did was I soldered some wires to power balls and some to ground 

> balls, and

> > then soldered the other ends of these wires to a connector. I made 

> sure I

> > had enough wires soldered for both power and ground, so the 

> inductances of

> > the wires were in parallel with each other, and hence their effect 

> was

> > minimized.

> >

> > I used an Agilent 5071B Network Analyzer, and used the 

> Z-Conversion

> > (reflection) feature to convert S params to Z params.

> >

> > Do you think there is anything worng with way I thought out the

> > measurements? Is there any way this experuiement could be 

> improved?

> >

> > Since the calibration was done till the end of the SMA cable, I am 

> thinking

> > I will take a frequency profile of the Z of the wires separately, 

> and then

> > find way to divorce the effect of the inductance of the wires, 

> from the

> > measurement.

> >

> > Thanks for the guidance!

> >

> > Regards,

> > Avtaar Singh


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