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

fYear

2015

fDate

March 30 2015-April 1 2015

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2015 IEEE International

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/IEEE-IWS.2015.7164598

Filename

7164598