Title :
Electrically small omni-directional antenna of circular polarization
Author :
Yu, Yufeng ; He, Sailing ; Shen, Zhongxiang
Author_Institution :
Center for Opt. & Electromagn. Res., Zhejiang Univ., Hangzhou, China
Abstract :
A compact omni-directional antenna of circular polarization (CP) is presented for 2.4 GHz WLAN access-point applications. The antenna consists of four bended monopoles and a feeding network simultaneously exciting these four monopoles. The electrical size of the CP antenna is only λ0/5×λ0/5×λ0/13. The impedance bandwidth (|S11|<;-10 dB) is 3.85% (2.392 GHz to 2.486 GHz) and the axial ratio in the azimuth plane is lower than 0.5 dB in the operating band.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; monopole antennas; omnidirectional antennas; wireless LAN; CP antenna; WLAN access-point applications; axial ratio; azimuth plane; bended monopole network; circular polarization; electrically small omnidirectional antenna; feeding network; frequency 2.392 GHz to 2.486 GHz; Azimuth; Bandwidth; Broadband antennas; Helical antennas; Polarization;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349333
