An Improved Wideband Dipole Antenna for Global Navigation Satellite System

Author

Wang EnCheng ; Shi LuYao

Author_Institution

Inf. Eng. Coll., North China Univ. of Technol., Beijing, China

Volume

13

fYear

2014

fDate

2014

Firstpage

1305

Lastpage

1308

Abstract

In this letter, an improved wideband dipole antenna is proposed for BEIDOU/GPS/GLONASS/GALILEO systems. The proposed antenna includes crossed narrow magneto-electric dipoles that are excited by two Γ-shaped strip probes, a 3-dB hybrid coupler, and reflecting plate. The experiment results reveal that the proposed antenna achieves a wide impedance bandwidth of 51.4% (1.1-1.85 GHz) for VSWR <; 1.5. A 3-dB axial-ratio bandwidth of 42.9% (1.1-1.7 GHz) and a gain of 5.6 ±0.6 dBi are covered by the whole operating band. Moreover, in the operating bandwidth, very stable, symmetrical radiation patterns and high gain at the low angle are obtained.

Keywords

antenna radiation patterns; broadband antennas; dipole antennas; satellite navigation; waveguide couplers; Γ-shaped strip probes; BEIDOU; GALILEO system; GLONASS; GPS; bandwidth 1.1 GHz to 1.85 GHz; crossed narrow magneto-electric dipoles; global navigation satellite system; hybrid coupler; operating bandwidth; reflecting plate; symmetrical radiation patterns; wide impedance bandwidth; wideband dipole antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Couplers; Dipole antennas; Global Positioning System; 3-dB hybrid coupler; $Gamma$-shaped strip probes; circularly polarized; magneto-electric dipoles;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2335752

Filename

6851135