BTW, the SI-LIST discards attachments. No one will see your plots. Steve. On 12/11/2013 1:11 AM, sureshkumar.ayyavu@xxxxxxxxx wrote: > Hi Dudes, > > Currently I'm doing PCB power integrity simulations on Sigrity Power SI. > I've done the initial simulation by assigning decoupling capacitor S > parameter models and ports to the power net that I need to simulate. > > After the result , i got some resonant peaks in the low frequency and high > frequency regions. For instance , I got the peaks at 5Mhz & 40 Mhz. Then I > tried to suppress these peaks by substituting the decaps which has low ESR > value at the resonant peak frequencies. For the decoupling capacitor > placement , I 've the placed low value caps near the DUT so as to suppress > the hign frequency peak and placed the higher value cap near the source , in > my case banana jack in order to suppress the low frequency peak. > > > > But after the simulation , I don't see much difference between the impedance > plots (attached). My target frequency is 0.1 ohm. > > > > Guys , please help me to clarify this. How to optimize the plot ? > > > > To select the cap for optimization , I go for TDK capacitor search page. > > > > Thanks > suresh > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List forum is accessible at: > http://tech.groups.yahoo.com/group/si-list > > List archives are viewable at: > //www.freelists.org/archives/si-list > > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > -- Steve Weir IPBLOX, LLC 1580 Grand Point Way MS 34689 Reno, NV 89523-9998 www.ipblox.com (775) 299-4236 Business (866) 675-4630 Toll-free (707) 780-1951 Fax All contents Copyright (c)2013 IPBLOX, LLC. All Rights Reserved. This e-mail may contain confidential material. If you are not the intended recipient, please destroy all records and notify the sender. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu