Hi,experts I am doing a simulation to optimize the impedance of cap pairs.I found the insertion loss curve of the cap pair had unnormal ripples,then I changed the frequency sweep range,the ripples disappeared!I am sure all the setup parameters are correct. I am confused that wheather my optimization is ok.can anyone give me some suggestions? Edison------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu