Hello Siers, when I simulated PowerGround_prj example that comes along with ADS installation 2002c using momentum 3D field solver, surprisingly Iam seeing at some points S11 is greater than 1 in magnitude. In db it goes up to +0.3db. How is this possible for a passive power planes? Is it anything to do with numerical stability of simulation algorithms? (since I took the standard ADS example, Iam assuming that all substrate definations and other settings are correct) Thanks and regards, Jayaprakash. ===== Balachandran Jayaprakash Celestijnenlaan, 3/61, 3001, Heverlee, Leuven, Belgium. Mobile: +32-472-630120 ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://uk.messenger.yahoo.com/ ------------------------------------------------------------------ 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