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Ansys Learning Forum › Forums › Discuss Simulation › Electronics › HFSS imported helical antenna simulation with PCB › Reply To: HFSS imported helical antenna simulation with PCB

November 11, 2024 at 3:40 am
kkong
Ansys Employee

Hi Kagankarakusx,

It makes no sense to extract the S11 of an antenna based on a small reference during the workflow you have in mind.
Electrical small antennas are highly affected by the ground.
These antennas have the same behavior as a monopole, so you need to think in terms of Image Theory.
Therefore, you need to create an simulation model that combines the actual PCB and the antenna.
Using a 3D component has the advantage of being reusable, and there is no difference between using a step file directly from the current analysis model or using a 3D component.
To join the helical coil to the PCB, you can create a box to connect the PCB and coil to unite them, taking into account that soldering is used in the real model. The size of the solder doesn't have a big impact, so you can create a box of the appropriate size.