Circular Patch Antenna in HFSS

Hello everybody,

I'm fairly new to this site and to HFSS as well, and had a couple questions about running some simulations of a circular patch antenna.

My actual (already fabricated) patch antenna has a single probe feed, but the signal is split in 2 components which are 90 degrees out of phase. These 2 out of phase signals excite the antenna.

How do I model this behavior in HFSS? I tried making 2 probe feeds using waveports, but how do I run them 90 degrees out of phase? In the end, I would like near-field plots.

Thanks in advance for any and all help!

-shmiv

HFSS -> Fields -> Edit Sources

modify the amplitude and phase of your excitations