Hello,
I designed a reflector antenna that works fine when the feed is placed at a focal point with linear polarization. however, when I rotate the feed to 45 degree, I assume to get a 3dB loss in gain in the elevation and azimuth plane, but I see the gain deviation is less than 3dB(in azimuth is about 2.7 and in elevation is about 2.2).
I need to know how it is possible.
To measure gain in CST when rotating an antenna, follow these steps: design and set up the antenna simulation, create a parametric sweep for rotation angles, run the simulation to obtain gain values at various angles, extract and record the gain data, plot the gain against rotation angles, and analyze the pattern to identify max gain directions. This process helps understand how the antenna's gain changes with rotation, aiding in optimizing its performance. CST's tools facilitate radiation pattern analysis and gain calculation. Remember, specific procedures might differ by CST version, so consult documentation or tutorials for precise guidance.
Dear John Jin
I see that the operating frequency has also changed, from 17 GHz to 18 GHz... clearly to get consistent results you must run that test at the same frequency.
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