[SI-LIST] Re: about hfss tdr function
- From: Trina Shih <trina.shih@xxxxxxxxx>
- To: taoye000@xxxxxxxxx
- Date: Thu, 1 Aug 2013 23:46:15 -0700
Hi
Have you provided the correct material information? Especially the
dielectric constant. This can help you correlect the result.
BR
Trina
On Aug 1, 2013 11:38 PM, "ye tao" <taoye000@xxxxxxxxx> wrote:
> with agilent TDR,this via is 47 ohm,the sim model Dimensions is the real
> size,I Sliced via and measured.
> So,I think HFSS TDR is not very exactly,the result of simulation is higher
> than measure 2~3 ohm,Do you experience such problems?I know increase the
> antipad can fix it,but how simulate the via impedance,According 53 ohm
> maybe better?
> I simulated the trace line use hfss tdr,the result is almost same with
> test,but the via is different,and I alter window function no improvement.
>
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