Learning Forum

[Connor Pope]

Hello,

Is there a quick way to use the antenna synthesis function for wide band frequency scanning, such that the scanning angle is the same across frequency when I change the phase between elements? I've got far field radiation data from 5GHz to 19GHz, but HFSS only selects the phase required to reach the input scanning angle based on my minimum frequency, 5GHz, which means a 30 degree scanning angle sets 30 degrees at 50GHz, but only ~2ish degrees at 19GHz.

My far-field results are for a 4x8 array that I synthesized from a fully simulated 1x4 geometry. The 1x4 array is in the E-plane and is uniform amplitude and phase excitation. It's the H-plane that I'm scanning, so each 1x8 array-slice is a single phase delta, expanding until the final 1x8 array-slice.

When I change the scanning angle in my array synthesis for the H-Plane (set to U), it shows massive beam squinting as expected since its phase delay and not true-time delay. I would like to more quickly verify my scanning range across my full band in just a couple post-processing steps as opposed to many more if I did only phase delays.

Is there a way to do true time delay post processing for antenna scanning in HFSS? Or is it only phase delay?

[Connor Pope]

Bump. I bet many would appreciate a method to apply a time delay as opposed to a phase delay between wave ports for antenna synthesis of far field radiation patterns.