Hi all I've simulated two coupled parallel microstrip lines with both HFSS and SIwave(from Ansoft), there is good agreement between the SHAPE of Scattering Matrix results in two softwares,BUT in the LEVEL of them there is about 15 - 20 dB difference,what do you think about this? Regards ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net 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