Is it possible to simulate planar coil printed on a PCB with FEMM? The only idea that come into my mind is to have 2n (if n is the number of turns) regions, each region represents a copper trace and has one turn (half traces have positive turn and half traces have negative turn). Something like this: snapshot

Is this correct approach? If yes should this be solved as a magnetic problem or as a current flow problem? Is what I draw something that is really a planar RFID coil in 3D? I can't seem to understand how those lines are closing.


This approach worked perfectly fine for me. I did such a simulation with FEMM and I got reasonable results.

The LUA scripting in FEMM even allows you to move the geometry between simulations, in order to find the best solution.

  • \$\begingroup\$ I edited question a bit and if I am on the good way I can provide also the simulation results and everything ... \$\endgroup\$
    – Nexy_sm
    Feb 10 '20 at 19:27
  • \$\begingroup\$ It should be solved as Magnetics Problem. \$\endgroup\$ Feb 11 '20 at 5:29

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