Title :
A wideband differentially driven circularly polarized antenna
Author :
Quan Xue ; Shaowei Liao
Author_Institution :
State Key Lab. of Millimeter Wave, City Univ. of Hong Kong, Hong Kong, China
Abstract :
This paper presents a novel wideband differentially driven circularly polarized antenna. It consists of a ground plane, a half loop and a dipole. Circularly polarized radiation is realized by overlapping the far field of the half loop and dipole. The overall bandwidth of the antenna, restricted by its 3dB axial ratio and 3dB gain bandwidths, is from 5 to 6.9GHz or 32%. The peak gain within the bandwidth reaches 7.6dBi. Since both the structure and feeding are symmetric, the antenna shows a symmetric radiation pattern.
Keywords :
antenna radiation patterns; broadband antennas; dipole antennas; electromagnetic wave polarisation; antenna bandwidth; dipole antenna; far field antenna; frequency 5 GHz to 6.9 GHz; ground plane; half loop antenna; symmetric radiation pattern; wideband differentially driven circularly polarized antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Dipole antennas; Microwave antennas; Circulalry polarized antenna; differential circuit; differetially driven antenna;
Conference_Titel :
Electromagnetics (iWEM), 2014 IEEE International Workshop on
Conference_Location :
Sapporo
DOI :
10.1109/iWEM.2014.6963740
