A dual-band circularly polarized stacked microstrip antenna with single-fed for GPS applications

Author

Wang, Yufeng ; Feng, Jianjie ; Cui, Jingbo ; Yang, Xiaolong

Author_Institution

Jiangnan Electron. & Commun. Res. Inst., Jiaxing

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

108

Lastpage

110

Abstract

A single probe feeding stacked microstrip antenna is presented to obtain dual-band circularly polarized (CP) characteristics using double layers of truncated square patches. The antenna operates at both the L1 and L2 frequencies of 1575 and 1227 MHz for the global positioning system (GPS). With the optimized design, the measured axial ratio (AR) bandwidths with the centre frequencies of L1 and L2 are both greater than 50 MHz, while the impedance characteristics within AR bandwidth satisfy the requirement of VSWR less than 2. At L1 and L2 frequencies, the AR measured is 0.7 dB and 0.3 dB, respectively.

Keywords

Global Positioning System; UHF antennas; antenna feeds; microstrip antennas; multifrequency antennas; GPS applications; Global Positioning System; axial ratio bandwidths; circularly polarized characteristics; dual band stacked microstrip antenna; frequency 1227 MHz; frequency 1575 MHz; impedance characteristics; single probe feeding antenna; truncated square patches; Antenna feeds; Antenna measurements; Bandwidth; Design optimization; Dual band; Frequency measurement; Global Positioning System; Microstrip antennas; Polarization; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on

Conference_Location

Kunming

Print_ISBN

978-1-4244-2192-3

Electronic_ISBN

978-1-4244-2193-0

Type

conf

DOI

10.1109/ISAPE.2008.4735151

Filename

4735151