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negative gain antenna

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nf707

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hello all
i simulated this antenna in HFSS for circular polarization but the gain of antenna is negative? i intend ask a question whats the negative gain? gain is a positive quality
 

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your gain plots are in dB (-4 to -1 dB), these correspond to gain <1; not negative.
 
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    nf707

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hello rntsay
thanks for reply
just a question
How we can improve the bandwidth of axial ratio(for circular polarization)
is it possible we reach 1GHz bandwith CP for this antenna?
 

sorry but that's well outside what I know. I don't think it's an easy problem
even for experts.
 

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