YK Gian, You can model the connector as coupled transmission lines in LineSim using the "Coupled Stackup" method. If you have HSPICE installed on the same computer and you have the LineSim GHZ option, you can assign the HSPICE connector model to nodes in your LineSim schematic, launch the HSPICE simulation from LineSim's oscilloscope dialog, and observe the results of the HSPICE simulation on the oscilloscope waveform viewer. The quickest way to get up to speed on these methods is to refer to the HyperLynx demo/tutorial program. Contact me directly and I can help. Max Pillie Mentor Technical Support Support_hyperlynx@xxxxxxxxxx -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Hassan O. Ali Sent: Wednesday, February 25, 2004 9:13 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Extract/Convert Lumped Spice model to T-line model The correct equivalent model will have to have a pair of coupled transmission lines. Does LineSim support coupled transmission lines? To generate the coupled-line equivalent model, you can use the optimization feature of HSPICE, using, for example, frequency-dependent S-parameters as your goal. That is, you continue to vary the variables of your new model and you stop when the S-parameters of the new model match the S-parameters of the original model in the frequency range of interest. Hassan. On Feb 25, Gian YK-r58635 <yeekoy.gian@xxxxxxxxxxxx> wrote: > > All, > > I am new to HSPICE and also simulation. I need some advise on how to convert > the lumped SPICE model below to a T-line model (so that I can model it as a connector in LineSim). It is a compatible model for test probe. > > Cs:Total shunt capacitance > C21:Mutual-capacitance between adjacent pins > Ls:Pin self-inductance > Lm:Mutual inductance between adjacent pins > Rs:Shunt-resistance of inductors Rs used to model high frequency loss due to > skin effect and dielectric loss > > > GND GND > | | > Cs/2 |---Rs---| Cs/2 > | | | | > o-------------Ls-------------o > | | > IN C21 C21 OUT > (DUT) | | (BOARD) > | | > o-------------Ls-------------o > | | | | > Cs/2 |---Rs---| Cs/2 > | | > GND GND > > > > Thanks & best regards, > YK ------------------------------------------------------------------ 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.org 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 technical documents are available at: http://www.si-list.org 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