Title :
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
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2015.2401576
