Disclosed is a traveling wave antenna with an improved beam tilt variation. According to an embodiment of the present invention, the traveling wave antenna includes: a feeding line extended from a first spot to a second spot; and at least one radiation part arranged along the feeding line. Each radiation part includes: first and second radiation elements formed in both sides of the feeding line in a position at a distance from the feeding line. According to an embodiment of the present invention, the present invention is capable of reducing a variation of a beam tilt angle in a design frequency band.;COPYRIGHT KIPO 2016
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