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differential ports wont reference each other!

Question asked by LANCE.TRODD on Dec 4, 2005
Latest reply on Feb 1, 2006 by ALEPEREZ
I have 2 pairs of differential ports on the edge of a PCB spiral antenna. One pair is for the RX side of the antenna and the other pair is for the TX antenna. Both pairs are in the same plane. I have successfully managed to make the one pair differential and associate with each other but I can't make the other pair associate with  each other! I get the error:
"These ports cannot be associated. If they are in the same reference plane and you want to associate them: Please set both ports to correct Port Type before setting associate with port number"

Of course I do this but I still get the error!