You dont attach a property to say nets are coupled. SQ will determine what nets are coupled by use of the geometry window value you set in the preferences form. Originally posted in cdnusers.org by horner
If the traces are within the geometry window then they will be included in the simulation. Extraction into SigXP does not do coupled traces unless they are defined as differential. There is an app note on allegrosi.com that describes the process to get a coupled trace model (in the form of a black box) into SigXP. There are many coupled trace elements available to use in SigXP under the interconnect section of the model browser.