Title :
A novel unidirectional circularly polarized antenna
Author :
Quan Xue ; Shaowei Liao ; Peng Wu ; Bisharat, Dia´aaldin
Author_Institution :
State Key Lab. of Millimeter Wave, City Univ. of Hong Kong, Hong Kong, China
Abstract :
This paper presents a novel type of unidirectional circularly polarized (CP) antenna. The antenna constructively combines a dipole and a half loop radiator. Theoretical foundation and working principle of the antenna is firstly discussed. A practical design of right-handed circularly polarized antenna with differential feeding is then presented. Measurement results show that the proposed antenna can achieve a 3-dB axial-ratio bandwidth of 24% (from 5.9 to 7.5 GHz), which is within its -10-dB differential reflection bandwidth. Meanwhile, the right-handed circularly polarized gain within the axial-ratio bandwidth is up to 7.0 dBi.
Keywords :
antenna feeds; antenna radiation patterns; dipole antennas; microwave antennas; polarisation; axial-ratio bandwidth; differential feeding; differential reflection bandwidth; dipole; frequency 5.9 GHz to 7.5 GHz; half loop radiator; right-handed circularly polarized antenna; unidirectional circularly polarized antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Dielectric resonator antennas; Dipole antennas; Microstrip antennas; Axial-ratio; circularly polarized antenna; electric dipole; magnetic dipole;
Conference_Titel :
Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-4355-5
DOI :
10.1109/APCAP.2014.6992420
