[SOLVED] ADS momentum differential port can't be defined

[grit_fire]

Hi, all,

I used ADS momentum to draw two simple square-shape antennas with one single metal layer. I planed to use one of them as transmitter and the other as the receiver. There are two ports in each of the antenna and hence four ports in total.

Then I tried to define two different ports, namely port 1&2 in the first antenna as a group of diff pair and port 3&4 in the second antenna as another group of diff pair. When I tried to define the differential ports using port editor, it returned me the following error:

Port P2 cannot be associated with port number 1.
If they are in the same reference plane, and you want to associate them:
Please set both ports to the correct Port Type before
setting ^Associate with port number^

And this happened as well to port 3&4.

Could anyone help resolve this problem? I have been stuck on this for quite a while...

I really appreciate your help!

 

[gasingh]

grit_fire , I found the solution to this after much head breaking , here concentrate on the word "reference plane " , Ports having same reference plane means that they either have the same X co-ordinate or the same Y co-ordinate , You should see only one white line and not two which ADS draws passing through each port , and don't trust what it looks , zoom it as much as you can and there should be only one line and ports 1 co-ordinate should be exactly same .

Let me know if this is not clear.

Regards'
Gaurav
Indian Institute of Science

 

[grit_fire]

Thank you so much! Gaurav.

After making only one white line pass througth each port, the differential port can be defined.