Abstract: The present disclosure relates to a multiband antenna structure which is capable of preventing interference between individual antennas in an antenna structure including a plurality of antennas having different shapes and bandwidths and maintaining a high level of isolation, although a distance between the antennas is reduced. A multiband antenna structure is capable of increasing a level of isolation by directly connecting an antenna connected to one feeding point and a ground coupling antenna (having a high frequency band) arranged adjacent to antenna connected to the feeding point.