abhi_kolkata
Member level 5

hi,
i am trying to simulate a grounded CPW structure with the specs. given below, in IE3D upto 50 GHz. IE3D is giving some medium warnings - saying the port separation factor for the ports are too big and suggesting that i should reduce the distance between the positive and negative ports.
wat should i do?? in that case, should i ignore the warnings or that would cause severe inaccuracy in the results(i want the ckt. to operate upto that freq. accurately)
plz aslo mention the reason for this warning and its physical significance (so that i do not repeat the same mistake next time).
Grounded CPW specs.:
Signal line width: 50 micron
CPW finite ground plane width : 250 micron
Gap between signal and gnd line: 70 micron
the total cpw line length : 340 micron
Substrate : GaAs (12.9) of thickness 350 micron
Another question is that - should i use some extra line length (more than 340 micron) to reduce the port to port coupling and get actual results.
If anybody knows the answers Plz do reply with ur views
eagerly waiting
abhi
i am trying to simulate a grounded CPW structure with the specs. given below, in IE3D upto 50 GHz. IE3D is giving some medium warnings - saying the port separation factor for the ports are too big and suggesting that i should reduce the distance between the positive and negative ports.
wat should i do?? in that case, should i ignore the warnings or that would cause severe inaccuracy in the results(i want the ckt. to operate upto that freq. accurately)
plz aslo mention the reason for this warning and its physical significance (so that i do not repeat the same mistake next time).
Grounded CPW specs.:
Signal line width: 50 micron
CPW finite ground plane width : 250 micron
Gap between signal and gnd line: 70 micron
the total cpw line length : 340 micron
Substrate : GaAs (12.9) of thickness 350 micron
Another question is that - should i use some extra line length (more than 340 micron) to reduce the port to port coupling and get actual results.
If anybody knows the answers Plz do reply with ur views
eagerly waiting
abhi