hi
has anybody ever managed to design a single patch microstrip antenna fed by coaxial cable in HFSS with DESIRED resonating frequency for example: 12GHz
i tested many dimensions of patch but never managed to set the frequency.
i've tried to compare simulation results of some of desigend patch antenna from different softwares, i found HFSS rarely useful in that field , some kinda frequency offset from real model results and so on, so i skipped using HFSS for simulating of those kinda of antennas and kept it for simulation of microwave structures,till i find IE3D which is whery powerful and time-saving simulator that shows the best result like the real model one.
I disagree with faghani about HFSS not being accurate for antenna simulation. Since it is a 3D full-wave simulator it should be the most accurate. Inaccurate results are due to incorrect setup with the airbox/radiation boundary or wrong choice of adaptive mesh and sweep combination. Take a look at this