A segmented helical antenna can include: a plurality of unit arms, each unit arm having a center hole, a first end hole, and a second end hole; a central axis passing through the center hole of the plurality of unit arms; a first wire passing through the first end hole of each of the plurality of unit arms; and a second wire passing through the second end hole of each of the plurality of unit arms. Each unit arm can be configured to be rotatable such that the first wire and the second wire rotate clockwise or counterclockwise.