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plot in eagleware

Question asked by xli_001 on Jun 15, 2004
Latest reply on Jun 18, 2004 by ROB_LEFEBVRE

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I plot a inductance value from its S parameters using equation
ind=imag(1/RECT(YP11))/(2*pi*FREQ*1e6)*1e12 ( unit in pH)

Somehow on the plot, the first point of the inductance value starts from 0, and other values look normal.

what happening?

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SLO_001 Jun 17, 2004 10:44 AM
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Does your frequency sweep include DC (0 Hz)?
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xli_001 Jun 17, 2004 2:12 PM
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I choose Linear: number of points for sweep type and start/stop frequency points are 41000MHz , 44000MHz, 7 step.

Then see my inductance starts from 0, and jump to nomral value ( my expecting value)
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ROB_LEFEBVRE Jun 17, 2004 2:21 PM
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I have seen this happen on occasion, but never found the cause. If you are able to, please send a workspace to technical support and we'll see what's happening.

Rob Lefebvre
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xli_001 Jun 18, 2004 10:09 AM
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Rob,

Thanks. But could you tell me how to send my project to you ( with data file, schmetics,etc)?

Regards
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ROB_LEFEBVRE Jun 18, 2004 10:20 AM
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Just call our support line and they will help you. Or, just send the .wsp file to support@eagleware.com.

Rob Lefebvre
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plot in eagleware

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