Hi all : In order to make our SI/PI simulation precision,Usually, the model of lump elements are required. How to get their impedence curves? How to get their spice model? How to make sure the test datas are correct? As we are well known, we can use VNA to get S parameters model, and then, we can get their impedence curves through their S parameters. but there is a problem in it.that is three transform modes, form S11,from S21,or from four S parameters? which method will make test error smallest? -- Every day is new! ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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