shmiv
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I'm trying to simulate the near-field of a circular patch antenna driven by 2 probe feeds that are 90 degrees out of phase. Also, the center of the patch antenna is grounded.
The model simulates fine (at 915 MHz), and I'm able to obtain some near-field plots using a sphere via the radiation menu in the project tree. However, the near-field plots tend to look a little strange depending on the size of the near-field sphere I use.
The circular patch has a radius of 61.5 mm, so what would be a good size near-field sphere to use?
Also, the far-field radiation pattern should be symmetric about the patch center, but it turns out slightly askew, what would be the cause of this?
(I can upload my model if need be)
Thanks!
The model simulates fine (at 915 MHz), and I'm able to obtain some near-field plots using a sphere via the radiation menu in the project tree. However, the near-field plots tend to look a little strange depending on the size of the near-field sphere I use.
The circular patch has a radius of 61.5 mm, so what would be a good size near-field sphere to use?
Also, the far-field radiation pattern should be symmetric about the patch center, but it turns out slightly askew, what would be the cause of this?
(I can upload my model if need be)
Thanks!