Learning Forum

[Tyler Hack]

Does Ansys or others have any HFSS models of air core inductors that have been validated in simulation? I am interested in simulating the performance (inductance and quality factor) of a surface mount Coilcraft inductor as the properties of the PCB dielectric material below it are changed. 

I built one of the coils using datasheet dimensions, however, the simulated L and Q do not match. I have attached an image of what the model looks like. Something is wrong in either the model or simulation setup, so I would like to simulate an already verified design if available.

[Anchal Singh]

Hello Tyler,

I am sorry I don't have an exact answer to your query but I can guide you to some related documentation/material which may help you to get the solution to your problem.

1. There is one Getting Started Guide pdf on the topic 'HFSS Spiral Inductor' that comes with the installation of AEDT. You can find the file by navigating to the Help > HFSS Getting Started Guides > HFSS Spiral Inductor. This may help you in setting the expressions for output variables to calculate the Inductance and Quality factor.
2. In the component libraries, there is one spiral inductor design similar to what you pasted here. This is created as a 3D component file and comes with the installation of AEDT. You can make the component library visible by navigating to View > Component Libraries. In this library, expand HFSS Components > Surface Mount Devices and choose Inductor SMD. Please note that this is just a geometry of the inductor and you need to assign boundaries, excitations, analysis setup, etc to perform the simulation.

I hope this will help you to resolve your problem.

Thank you.

Best regards

Anchal

[Sebastian Rivera]

Hi. Could you make the inductor?