The present invention relates to a multi-band circular polarization antenna. The multi-band circular polarization antenna includes: a dielectric substrate; a ground surface which is formed on a surface of the dielectric substrate and includes slots and slits connected to the slots; a power supply line formed the other surface of the dielectric substrate which is the opposite surface of the ground surface; and a reflection surface which is arranged below the dielectric substrate while being spaced apart from the dielectric substrate by a predetermined distance. The multi-band circular polarization antenna has multiple resonant bands according to the shapes of the slots and slits.
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