Hi Tarun,
As VJ mentioned, the Ansys student version supports only up to 64,000 3D elements.
However, with this limit, you should be able to solve your microstrip line model if it is a simplified model. Please provide the following details to help us serve you better-
- Solution setup
- Model objects and the implementation of the top and bottom conductors
- Initial and any other mesh settings
Kindly go through this informative video on this subject – Simulation of a Microstrip Line in Ansys HFSS.
Best regards,
Praneeth.