Title :
Quadrifilar helix antenna for GPS applications
Author :
Lan, Cheng-Wei ; Kiang, Jean-Fu
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
In GPS applications, the antenna requires omnidirectional pattern over entire upper hemisphere where the satellites may be visible. The fractional QHA (FQHA) is a compact size antenna that is suitable in mobile handset for Global Positioning System (GPS) applications. In this paper, we present a FQHA design with square cross section. The effect of dielectric core on travelling-wave QHA is presented. And resonant QHA with square dielectric core is also given.
Keywords :
Global Positioning System; antenna radiation patterns; mobile antennas; mobile handsets; mobile satellite communication; GPS applications; Global Positioning System; compact size antenna; fractional quadrifilar helix antenna; mobile handset; omnidirectional pattern; resonant quadrifilar helix antenna; satellites; square dielectric core; travelling wave quadrifilar helix antenna; Antenna radiation patterns; Bandwidth; Current distribution; Dielectrics; Global Positioning System; Helical antennas; Mobile antennas; Periodic structures; Resonance; Satellite antennas;
Conference_Titel :
Networking, Sensing and Control, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8193-9
DOI :
10.1109/ICNSC.2004.1297514
