Hi, Peter I think such a fornula does not exit. Simply speaking, loss tangent describes the property of uniform dielectric only. Dielectric conductance (Gd) depends not only on the dielectric but also the (microwave cicuirt) structures. Regards. Mick -----Original Message----- From: Peter LaFlamme [mailto:plaflamm@xxxxxxxx] Sent: Thursday, November 01, 2001 8:45 AM To: si-list Subject: [SI-LIST] Loss tangent and Dielectric conductance Hi SI Folks, I would like to know the relationship between Loss Tangent and Dielectric loss. In other words, If I know the "loss tangent" at a given frequency for a particular dielectric what is the formula to convert this into the Dielectric conductance(Gd) ? Thanks, Peter -- Peter LaFlamme Applied Micro Circuits Corp. Staff System Applications Engineer 200 Minuteman Rd, 3rd Floor Andover, MA 01810 978-247-8470 phone 978-623-0055 Fax ------------------------------------------------------------------ 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 ------------------------------------------------------------------ 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