Summary
International Symposium on Antennas and Propagation
2006
Session Number:1E2a
Session:
Number:1E2a-5
A Novel Dual-frequency Quadrifilar Helix Antenna in GPS/BD Applications
WANG Xiao-fei, CHU Qing-xin, HUANG You-huo, JU Xin-de,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
The resonant quadrifilar helix antennas have been widely applied to space communication links due to its relatively small volume and wide beam elevation pattern coverage over the upper hemisphere. According to the requirements of GPS and BD receiving antenna, a dual-frequency enclosed antenna is designed in this paper with two 3/4 wavelength quadrifilar helix antennas and a novel feed structure combined feed network with infinite microstrip balun. The feed structure provides excellent phase performance and better impedance match, which make the antenna achieve wider angle circular polarization. The actual antenna is simulated by Ansoft HFSS software based on the finite element method. The simulation results have well agreement to the measured data.