Title :
A differential-fed unidirectional antenna for ultra-wideband applications
Author :
Mingjian Li ; Kwai-Man Luk
Author_Institution :
Electron. Eng. Dept., City Univ. of Hong KongHong Kong, Kowloon, China
fDate :
March 30 2015-April 1 2015
Abstract :
A novel differential-fed magneto-electric dipole antenna with unidirectional radiation pattern is proposed. Based on the differential feed scheme presented in [1], a new pair of differential feeds is developed to provide an ultra-wideband impedance matching. Instead of a planar reflector, a rectangular box-shaped reflector is utilized to reduce the fluctuation of the antenna gain. The proposed antenna achieves an impedance bandwidth (SWR ≤ 2) of 132% from 2.48 to 12.12 GHz and a gain varying between 7.16 and 14.1 dBi. Over the operating frequency range, radiation patterns with low cross polarization and low back radiation have mainbeams fixing broadside direction.
Keywords :
antenna radiation patterns; dipole antennas; planar antennas; ultra wideband antennas; antenna gain; differential fed magnetoelectric dipole antenna; differential fed unidirectional antenna; differential feed scheme; planar reflector; rectangular box shaped reflector; ultrawideband applications; ultrawideband impedance matching; unidirectional radiation pattern; Antenna measurements; Antenna radiation patterns; Dipole antennas; Frequency measurement; Gain; Magnetoelectric effects; Ultra wideband antennas; Ultra-wideband antenna; differential-fed antenna; magneto-electric dipole; unidirectional patterns;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164598
