Title :
Loop-Monopole Composite Antenna for Dual-Band Wireless Communications
Author :
Xi-Tong Wu ; Wen-Jun Lu ; Jin Xu ; Kin Fai Tong ; Hong-Bo Zhu
Author_Institution :
Jiangsu Key Lab. of Wireless Commun., Nanjing Univ. of Posts & Telecommun., Nanjing, China
Abstract :
A novel loop-monopole composite antenna for wireless communications is presented. The proposed antenna is composed of a loop, a monopole, a horizontal ground plane and a vertical reflector. The antenna´s operation principle is investigated and some design guidelines are laid down in the beginning. Then, an optimized loop-monopole composite antenna is designed. It is demonstrated that the antenna covers two bands from 2.16 to 3.21 GHz and from 4.24 to 7 GHz for |S11| smaller than -10 dB. The antenna has stable, unidirectional radiation pattern within its pass-bands. The average gain of the antenna is 4.5dBi (lower band) and 7.7dBi (higher band). The proposed antenna can be used as an indoor base station antenna for multiband wireless communications.
Keywords :
UHF antennas; antenna radiation patterns; indoor radio; loop antennas; microwave antennas; monopole antennas; multifrequency antennas; reflector antennas; design guidelines; dual-band wireless communications; frequency 2.16 GHz to 3.21 GHz; frequency 4.24 GHz to 7 GHz; gain 4.5 dB; horizontal ground plane; indoor base station antenna; multiband wireless communications; operation principle; optimized loop-monopole composite antenna; unidirectional radiation pattern; vertical reflector; Antenna measurements; Antenna radiation patterns; Frequency measurement; Reflector antennas; Wireless communication; Dual-band antenna; loop-monopole composite antenna; unidirectional antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2363667
