3D printed miniaturized quadrifilar helix antenna

Abstract

This paper presents the design of a 3D printed quadrifilar helix antenna. The antenna is miniaturized by loading the tip of each helix by metallic circles of equal dimensions. The effect of decreasing the resonant frequency is also achieved by introducing a dielectric material within the antenna's physical structure. A prototype is fabricated and tested to prove the proposed technique. A good agreement is obtained between the theoretical and measured results.