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The returned solution does not converge
Posted 17 gen 2025, 04:28 CET Electromagnetics, Studies & Solvers Version 6.2 1 Reply
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Hello, I would like to ask for some advice. I am currently using the electromagnetic field physics field to build an antenna with a frequency set at 4 GHz. I want to observe the antenna gain of this antenna at 4 GHz, but during the calculation process, it gets stuck at 70% and the calculation becomes very slow. Eventually, it reports an error. I coarsened the mesh division, but the result is still the same. I also modified the relative tolerance in the solver, but the result remains the same. Could you please tell me what factors might be causing this? Error: -The steady-state solver 1 (sol1/s1) failed to find a solution. The linear iteration diverged. The returned solution does not converge. Not all parameter step sizes were returned. How to solve it ? Thank you very much!
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There is rather little to suggest in the absence of a model to look at.
The emw module has three choices for analysis methodology. You might want to try Robust.
Maybe also check all your selections and boundary conditions to make sure they are correct.