Hi Saoer, Typically all 3D EM tools have the possibility to enforce passivity thought generation of a SPICE model: for instance MOR (model order reduction) technique. With regarding to free tools in order to achieve this task you can take a look to http://www.emc.polito.it/ Best regards, Antonio -----Original Message----- From: saoer.sinaga@xxxxxxxxx [mailto:saoer.sinaga@xxxxxxxxx] Sent: Monday, June 02, 2008 4:02 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] S-par to Spice Dear all, As you all might know, the S-parameter produced by HFSS is not always passive, especially when you extrapolate to DC. Is there any tool that can generate a passive spice file (spectre compatible) out of a non-passive S-par? Preferably a freeware that I can use immediately. many thanks, Saoer Sinaga NXP Semiconductors. ------------------------------------------------------------------ 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 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 -- HTML Attachment decoded to text by Ecartis -- -- File: ALTERNATIVE.HTM Hi Saoer, Typically all 3D EM tools have the possibility to enforce passivity thought generation of a SPICE model: for instance MOR (model order reduction) technique. With regarding to free tools in order to achieve this task you can take a look to http://www.emc.polito.it/[1] Best regards, Antonio -----Original Message----- From: saoer.sinaga@xxxxxxxxx [mailto:saoer.sinaga@xxxxxxxxx] Sent: Monday, June 02, 2008 4:02 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] S-par to Spice Dear all, As you all might know, the S-parameter produced by HFSS is not always passive, especially when you extrapolate to DC. Is there any tool that can generate a passive spice file (spectre compatible) out of a non-passive S-par? Preferably a freeware that I can use immediately. many thanks, Saoer Sinaga NXP Semiconductors. ------------------------------------------------------------------ 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 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 --- Links --- 1 http://www.emc.polito.it/ ------------------------------------------------------------------ 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 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