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

fYear

2008

fDate

27-31 Oct. 2008

Firstpage

1759

Lastpage

1762

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008. EuMC 2008. 38th European

Conference_Location

Amsterdam

Print_ISBN

978-2-87487-006-4

Type

conf

DOI

10.1109/EUMC.2008.4751817

Filename

4751817