hello i'm design to the spiral antenna for WPT coil to find resonance frequency
i used copper-insulator-copper double layer and validate result OK.
BUT analyze result is so weird and i couldn't find resonance frequency
could you help me? i don't know which part problem
I attached detail coil spec and S11 graph
There is no resonance at 13MHz in such a WPT coil, it is purely inductive. For excitation, use a lumped port. Make sure your underpass doesn't create a short with the spiral on that layer.
tks for reply.
it is same double layer spiral copper coil and Shielded by an insulator.
i think analysis problem has port problem maybe , could you explain more detail?
is this radiation area fine? it is hard to find problem T.T
tks for reply.
i revised port wave port to lumped port, but result is same...
Could you explain some detail to create underpass doesn't create a short?
- Sincerely -
hello, i'm designing the copper spiral coil and find resonance frequency by using HFSS
i located ground and port, and radiation
but analysis doesn't work well and graph is so weird.
could you help me what's problem?
i attached .hfss for reference
thank for reply. i change the one layer copper coil and use lumped port. also i change to undercut and connect two port . one port is connected to the ground and the other connected to the copper to avoid short.
but simulation occurs "port refinement, process hf3d error: port 2 does not have a solved inside material on either side." errors.
could give me some advice?
i attached .hfss file for the reference to the my thread.
thank you