I wanted to design Bandpass filter at 3 GHz. I had to create a structure as shown in the attached jpeg screenshot. I am new to Analysis HFSS and require help document to create a structure using HFSS as shown in the screenshot.
HFSS is for analysis, not for designing. If you have no design so far, have a look at Filter Solutions (now Ansys, formerly Nuhertz).
This software will design the filter layout.
Ansys Nuhertz FilterSolutions provides automated RF, microwave and digital filter design, synthesis, and optimization in an efficient, straightforward process.