Circularly polarised magneto-electric dipole antenna

Author

Weilong Liang ; Yong-Chang Jiao ; Jingwei Li ; Tao Ni

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China

Volume

50

Issue

14

fYear

2014

fDate

July 3 2014

Firstpage

976

Lastpage

978

Abstract

A new design of a circularly polarised magneto-electric dipole antenna is presented. The proposed antenna is composed of two magneto-electric dipoles and a feeding network comprising a wideband 90° Schiffman phase shifter. The two magneto-electric dipoles are cross-placed. By using the proper feeding network, two orthogonal linearly polarised modes with a 90° phase difference for circular polarisation can be excited. Simulation results show that the 10 dB return loss bandwidth of the proposed antenna is 85.7% from 2 to 5 GHz, and the 3 dB axial ratio bandwidth is 61.5% from 2.7 to 5.1 GHz. The peak antenna gain is 8.3 dB. The measured results agree well with the simulation results.

Keywords

antenna radiation patterns; dipole antennas; microwave phase shifters; Schiffman phase shifter; circularly polarised magneto-electric dipole antenna; feeding network; frequency 2 GHz to 5 GHz; frequency 2.7 GHz to 5.1 GHz; gain 8.3 dB; orthogonal linearly polarised mode; peak antenna gain;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.0812

Filename

6849567