Hi to everybody
I'm just starting in using HFSS.
I'd like to design a dipole array antenna to compute the farfield, nearfield, and the SAR.
I've started with a simple Lambda/2 dipole.
The design is quite simple : 2 half-dipoles represented by 2 cylinders (radius=1mm) in copper. Between the tow of them, I put a simple rectangle (2mm by 2mm) , which I use to assign the excitation on (lumped port).
The all configuration is set into a vaccum cylinder with radiation boundaries.
Once the computation done, the results give the right S11 parameter, but the farfield 3D pattern is awful and really different from what I expected.
It doesn't show the expected donut, but it seems that I have a directional antenna.
If anyone has an answer or an idea to change the feeding so that I have a normal dipole pattern, I would be grateful
Thanks
Ptitjean
I'm just starting in using HFSS.
I'd like to design a dipole array antenna to compute the farfield, nearfield, and the SAR.
I've started with a simple Lambda/2 dipole.
The design is quite simple : 2 half-dipoles represented by 2 cylinders (radius=1mm) in copper. Between the tow of them, I put a simple rectangle (2mm by 2mm) , which I use to assign the excitation on (lumped port).
The all configuration is set into a vaccum cylinder with radiation boundaries.
Once the computation done, the results give the right S11 parameter, but the farfield 3D pattern is awful and really different from what I expected.
It doesn't show the expected donut, but it seems that I have a directional antenna.
If anyone has an answer or an idea to change the feeding so that I have a normal dipole pattern, I would be grateful
Thanks
Ptitjean