Tri-band GPS antenna with low-multipath ground plane

Author

Wang, Moran ; Deng, Xiaoqiao ; Gu, Changqing

Author_Institution

Coll. of Inf. Sci. & Technol., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

Volume

2

fYear

2010

fDate

17-20 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

A single feed circularly polarized antenna is proposed for the GPS application. It is composed of four substrates. The bottom layer of the antenna is a single-fed four-port hybrid ring in order to provide the required equal amplitudes and 90° phase shift signals for circular polarization. The other three substrates, each has a square patch to achieve the tri-band performance. The simulated results show that the antenna can cover all GPS bands (L1L2L5), which has a 24MHz bandwidth at each operating frequency. It has good impedance matching characteristics in the (1.17-1.6) GHz band. Because of the susceptibility to low-angle multipath, two kinds of ground plane are presented. We compare the performance of the two proposed antennas which have low-multipath ground plane. Our results show that both configurations, when properly optimized, are good candidates for modernized GPS antenna.

Keywords

Global Positioning System; microstrip antennas; polarisation; circular polarization; impedance matching characteristics; low-multipath ground plane; single feed circularly polarized antenna; single-fed four-port hybrid ring; tri-band GPS antenna; Global Positioning System; Hybrid ring; Low-Multipath ground plane; Microstrip stacked patch antenna; Tri-band;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals Systems and Electronics (ISSSE), 2010 International Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6352-7

Type

conf

DOI

10.1109/ISSSE.2010.5606980

Filename

5606980