The present invention relates to an algebraic periodic antenna. Specifically, by constructing an algebraic periodic dipole array antenna including a dipole radiating element having an improved upper load structure, it is possible to effectively reduce the size and further improve the frequency characteristics in a low frequency band To a small wideband algebraic dipole array antenna. The present invention relates to an algebraic periodic dipole array antenna including a plurality of dipole radiating elements, comprising: a first branch line branched at one end of one end of a first dipole radiating element; and a second branch line branched at both ends of the first branch line And at least one dipole radiating element having a first top-loading structure including a second branch line bending towards the other longitudinal end of the first dipole radiating element. And has an effect of implementing an array antenna.
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