Design and Implementation of a Quadrifilar Helix Antenna Operating at 0.94GHz
A Quadrifilar Helix Antenna (QHA) operating at 0.94GHz is designed and realized in this paper. The designed QHA consists of four helical conductors which are excited in phase quadrature by employing a Wilkinson divider which shows good performance in return loss and transmission characteristic. According to the designed parameters of the helices and Wilkinson divider, a QHA is fabricated and measured. The measured results demonstrate that the designed QHA has a resonant frequency of 0.94GHz and relative good performances including low Voltage Standing Wave Ratio (VSWR), broad beam width and approximate circular polarization are achieved.