Some information on power plane impedance modeling can be found at www.specctraquest.com. You are not required to be a Cadence customer. You do need to register in order to access some "pages". Both methodology and tool-specific questions are discussed there. Papers by both customers and Cadence engineers are also posted. Best regards, Lynne >> [SI-LIST] Re: Decoupling capacitors ------------------------------------------------------------------ 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 archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu