Title :
Design of a Dual-Band Quadrifilar Helix Antenna Using Stepped-Width Arms
Author :
Gangil Byun ; Hosung Choo ; Sunwoo Kim
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This communication proposes the design of a quadrifilar helix antenna (QHA) with stepped-width arms and a meander feeding network. The stepped-width arms are applied to reduce the antenna size and adjust the frequency interval for dual-band operation. The feeding network includes a 90°-hybrid chip coupler and two meander lines that are designed to give a 180°-phase delay. The proposed QHA is optimized using a genetic algorithm (GA) and then fabricated to measure its performances in a full anechoic chamber. The results demonstrate that the proposed antenna is suitable to be used for dual-band global positioning system (GPS) applications.
Keywords :
Global Positioning System; anechoic chambers (electromagnetic); antenna feeds; antenna radiation patterns; genetic algorithms; helical antennas; multifrequency antennas; QHA; antenna size; dual-band GPS applications; dual-band global positioning system applications; dual-band operation; frequency interval; full anechoic chamber; genetic algorithm; hybrid chip coupler; meander feeding network; meander lines; quadrifilar helix antenna; stepped-width arms; Antenna feeds; Antenna measurements; Dual band; Gain; Global Positioning System; Helical antennas; GPS antennas; Global positioning system (GPS) antennas; Helix antennas; Quadrifilar helix antennas; helix antennas; quadrifilar helix antennas (QHAs);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2015.2398463
