Planar Endfire Circularly Polarized Antenna Using Combined Magnetic Dipoles

Author

Wen-Jun Lu ; Jing-Wen Shi ; Kin-Fai Tong ; Hong-Bo Zhu

Author_Institution

Jiangsu Key Lab. of Wireless Commun., Nanjing Univ. of Posts & Telecommun., Nanjing, China

Volume

14

fYear

2015

fDate

2015

Firstpage

1263

Lastpage

1266

Abstract

A novel planar circularly polarized antenna with endfire radiation beam in parallel with the antenna substrate´s plane is proposed. The operation principle of the antenna is analyzed and design guidelines are laid down. Then, an optimized loop-aperture combined antenna is designed and demonstrated to exhibit an endfire beam in parallel with its plane within 5.74-5.88 GHz for |S₁₁| lower than -10 dB and axial ratio smaller than 3 dB. The proposed antenna can be used as a low-profile, cost-effective, hand-held reader antenna for radio frequency identification systems .

Keywords

loop antennas; magnetic moments; planar antennas; polarisation; radiofrequency identification; antenna substrate plane; axial ratio; combined magnetic dipole; endlire radiation beam; handheld reader antenna; loop-aperture combined antenna; planar endfire circularly polarized antenna; radiofrequency identification system; Antenna measurements; Dipole antennas; Directive antennas; Impedance measurement; Radiofrequency identification; Circularly polarized antenna; endfire; loop-aperture combined antenna; planar antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2015.2401576

Filename

7036041