Tesla, My apologies for an incorrect assumption. I appreciate that you took my somewhat too direct advice in a positive manner. To avoid confusion on my part and the part of others, perhaps you should copy and paste the FAE's response to your questions, and then what it is that you are still unclear about. That way there is no ambiguity. For my part I honestly felt that your questions could have been answered by the Ansoft user documentation, and any remaining issues answered by an FAE. If you don't think that the response is adquate, ask for a more in-depth response. I'm sure they will be happy to accomodate. My thanks to Brad and Yuri for taking the high ground. Ken -----Original Message----- From: Tesla [mailto:emcesd@xxxxxxx] Sent: Friday, August 12, 2011 10:43 PM To: bradb@xxxxxxxxxxx; Ken.Cantrell@xxxxxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx; shlepnev@xxxxxxxxxxxxx Subject: RE: [SI-LIST] Why discontinuity must be far away Wave Port excitation? Thanks for all of replies.Specially for bradb and shlepnev's patience,you are so nice, also for ken's honest and direct advice. First, i am not using a pirated copy of HFSS. i ask help for local FAE. but he always gives me wrong answers. he seems to be less knowledged in EM than me. So i resort to SI-LIST Yes, Ken,you are right, i only have undergraduate level Emag. But it can not prevent me from learning EM without a education background. ------------------------------------------------------------------ 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