antenna simulation and ads

Hi, everyone. I have some questions about the circular polarization antenna simulation by Agilent ADS:

1. After finish the momentum simulation, the 2D radiation pattern can be plotted. But the right-hand and left-hand radiation gain are normalized to 0dB, and the gain and directivity are plotted in the second diagram. So how can I get the right-hand gain with the reference to dBi?

2. Since Momentum runs for a series of frequencies points, and the radiation patterns are only visualized at individual points. So is it any ways to plot the maximum gain, radiation efficiency, or axial ratio at specific angle as a function of frequency? Just like IE3D or HFSS...

Thanks.

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