Dear all I have some confuse about w-element. The w-element support 4 different formats to specify the transmission line properties. RLGC model, U-Model, Field solver model and tabular model. 1. Both u-model and field solver model need to describe geography of the stack-up. What's the difference of these two models? Application and accuracy. 2. When we using field solver calculation, it could output a RLGC matrix. If we using the RLGC model as the w-element input format, how is the discrepancy between the field solver model and RLGC model? 3. Base on some documents, tabular model is suggested to be used in high frequency simulation. What's the common method to get the tabular table information. Thanks. Terence ------------------------------------------------------------------ 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