Title :
Design of dielectrically-loaded printed quadrifilar helical antenna for GPS applications
Author :
Xiao-yang, Du ; Shu-rong, Dong ; De-miao, Wang
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
A quadrifilar antenna for GPS applications is designed by HFSS. This quadrifilar antenna has four helical arms wound around a dielectric cylinder which has high permittivity and low loss. The four arms are fed with equal amplitudes with 0deg, 90deg, 180deg, 270deg phase by integrated feeding network. Through precisely control of phase and design of high permittivity ceramic, quadrifilar antenna obtains proper resonant frequency and good radiation pattern. The effects including resonant frequency, axial ratio, radial pattern, impedance, gain, efficiency are simulated.
Keywords :
Global Positioning System; antenna radiation patterns; helical antennas; microstrip antennas; permittivity; GPS applications; HFSS; axial ratio; dielectric cylinder; dielectrically-loaded printed antenna; efficiency; gain; high permittivity ceramic; impedance; integrated feeding network; quadrifilar helical antenna; radial pattern; radiation pattern; resonant frequency; Antenna radiation patterns; Arm; Ceramics; Dielectric losses; Global Positioning System; Helical antennas; Impedance; Permittivity; Resonant frequency; Wounds; GPS; dielectric ceramic; helical antenna; phase control;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368256
