Zhangkun- Are you certain your transformer is as "transparent" as you are assuming? What sort of bandwidth are you attempting to get measurement vs simulation correlation over ? What kind of transformer are you using as a balun in your measurements? -Ray zhangkun 29902 wrote: >Scott > >I agree with you that it is very difficult to measure this kind of structure. >In our measurement, I have changed the method several times. Do you know if >there is some document describe this kind of method? > >In order to avoid common mode noise because of balance and unbalance >connection, I have used transformer. > >Best Regards > >Zhangkun >2004.7.23 > > ------------------------------------------------------------------ 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