Title :
A Novel Dielectrically-Loaded Antenna for Tri-band GPS Applications
Author :
Liu, Sha ; Chu, Qing-Xin
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou
Abstract :
A novel handset antenna for global positioning system (GPS) applications is proposed to cover the three GPS bands (L1, L2 and L5, namely 1575.42 MHZ, 1227.6 MHZ and 1176.45 MHZ). The proposed antenna size is only 17 mm times 17 mm in aperture corresponding to lambda/15 times lambda/15 (lambda = free space wavelength) and lambda/6 length. The tri-band operation is achieved through the incorporation of a dielectrically-loaded quadrifilar helix antenna (DQHA) and a dielectrically-loaded octafilar helix antenna (DOHA) into one structure by coaxially mounting them in a "piggyback" fashion. The dielectric loading with the special feeding mechanism yields an antenna with low proximity effects and small size to be suitable for mobile handset.
Keywords :
Global Positioning System; dielectric-loaded antennas; helical antennas; mobile antennas; multifrequency antennas; bandwidth 1176.45 MHz; bandwidth 1227.6 MHz; bandwidth 1575.42 MHz; dielectric loading; global positioning system; handset antenna; quadrifilar helix antenna; tri-band GPS applications; Antenna feeds; Aperture antennas; Coaxial components; Dielectrics; Global Positioning System; Helical antennas; Loaded antennas; Mobile antennas; Proximity effect; Telephone sets;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751817
