[SI-LIST] Re: S11 or S21

Hello Vrenda,

Try www.x2y.com

Regards,
Istvan



Naren wrote:

>hello steve
>
>I unable to find this site www.xy2.com
>It is jumping to some other site !!!
>
>steve weir said:
>  
>
>>Vrenda,
>>
>>The X2Y web site www.xy2.com has an application note that I wrote for
>>extracting capacitor parameters.  That method uses S21.
>>
>>A couple of points:
>>
>>1. The smaller the test board the better to extract the ESL of a raw
>>capacitor.  A 2x2 board will up to 500MHz or so.
>>2. The simple single RLC model is overly pessimistic at high
>>frequency.  See the DesignCon 2005 TK7 proceedings.
>>
>>Steve
>>
>>At 11:46 AM 5/26/2005 -0700, Virendra wrote:
>>    
>>
>>>Hello All,
>>>I am trying to measure the esl of a ceramic capacitor.
>>> I have a test board of 2"x 2" for this.  I have SMA
>>>connectors connected to two sides of the test board.
>>>Now to extract the esl of the capacitor, is it best to
>>>measure the S11 or S21.
>>>Given that S21 gives lesser measurement errors does it
>>>still make sense to measure S21 when the two
>>>connectors are 2" apart?
>>>
>>>thanks in advance,
>>>virendra
>>>
>>>
>>>
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>
>
>  
>

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