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problem with internal ports in EMDS for ADS?

Question asked by rewaa on Mar 16, 2016
I have the following problem,
"singular [e_n] discovered:this is a breakdown in the indefinite lanczos alg"
every time I add more than one internal port in a layout to be simulated with EMDS.

The layout is a microstrip circuit. I wanted to add internal ports to use it in co-simulation, but I get this error everytime I put more than 1 internal port.

Without internal ports or with 1 internal port the simulation runs well.