Title :
A novel loop-dipole composite unidirectional antenna for broadband wireless communications
Author :
Guimei Liu ; Wenjun Lu ; Hongbo Zhu
Author_Institution :
Jiangsu Key Lab. of Wireless Commun., Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
A novel wideband unidirectional antenna for broadband wireless applications is proposed and investigated in detail. The antenna is composed of a grating, symmetrical dipole and a sectorized loop. The antenna and its feed network are printed on the same thin substrate mounting above a circular ground plane. The reflection coefficient (i.e. |S11|), radiation patterns and gain of the antenna are numerically investigated. It is shown that an impedance bandwidth from 1.68 GHz to 3.53 GHz for |S11| lower than -10dB is obtained. The antenna has stable, unidirectional radiation pattern with average gain of 7.04 dBi within its impedance bandwidth. Because the antenna can cover the bandwidth of different wireless communication systems such as DCS-1800, IMT-2000, WLAN-2400, WiMax and LTE, it is suitable for indoor base station applications.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; dipole antennas; directive antennas; loop antennas; radiocommunication; DCS-1800; IMT-2000; LTE; WLAN-2400; WiMax; antenna radiation patterns; bandwidth 1.68 GHz to 3.53 GHz; broadband wireless communications; circular ground plane; feed network; grating; impedance bandwidth; indoor base station applications; loop-dipole composite unidirectional antenna; reflection coefficient; sectorized loop; symmetrical dipole; wideband antenna; Antenna radiation patterns; Broadband antennas; Dipole antennas; Wideband; LTE; broadband antenna; loop-dipole composite antenna; unidirectional antenna;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE), 2013 IEEE 5th International Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-6077-7
DOI :
10.1109/MAPE.2013.6689806
