still something missed in last mail: My issue is that how to define those two side grounds of CPW ? Since they(side grounds) are seperated by the signal line and will not have opportunity to contact each other, how to define they two to be grounds in the same time? Use two impedance lines or some other ways exist? Thanks! Bi Han <mike_bihan@xxxxxxxxxxxx> wrote: Hi, all: Currently, I want to research some problem related to On-Si-chip CPW(coplanar wave guide) problem. But have some difficulty in port setup in HFSS and some other things, because in some dicument it is presented that two port can not share the same plane, some special technique is needed. Can anyone share me an example project or his experience? The example, packed in HFSS, is difficult to understand. Can any one help me with it? The project directory, without numerical solution results, will be no more than 2MB after compressed, any related document will also be invaluable! Ansoft guies may had to written more detail help in this field, haha... Thanks! B.H. Bi,Hai SJTU, Emlab --------------------------------- Do You Yahoo!? "ÑÅ»¢½ÚÈÕ´óתÅ̾ªÏ²²»¶Ï ¿ìÀÖ½ÚÈÕºÃÀñÁ¬Á¬!" ------------------------------------------------------------------ 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 Bi,Hai SJTU, Emlab --------------------------------- Do You Yahoo!? "ÑÅ»¢½ÚÈÕ´óתÅ̾ªÏ²²»¶Ï ¿ìÀÖ½ÚÈÕºÃÀñÁ¬Á¬!" ------------------------------------------------------------------ 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