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2016-01-03
Wide Bandwidth Horizontally-Polarized Omnidirectional Antennas for Indoor Distributed Antenna System Applications
By
Progress In Electromagnetics Research C, Vol. 61, 47-54, 2016
Abstract
Three horizontally-polarized (HP) omnidirectional antennas are proposed and discussed in this paper. The antennas are composed of 3, 4 or 5 printed dipoles with corresponding wideband 3-, 4- or 5-way feeding networks. The feeding networks are simple in structure and easy to be matched with the printed dipoles. All of the proposed antennas operate in the frequency band of 1.7-2.7 GHz, covering the DCS1800, WiFi2700 and 4G-LTE bands with reflection coefficients less than -15 dB. Effects of the number of the printed dipoles on omnidirectional characteristics are discussed. Crossed strips are applied to improve their cross-polarization performance. The proposed antennas are simulated, fabricated and measured. Both simulated and measured cross-polarization levels are lower than -15 dB from θ=60° to θ=120° conical cuts. The antennas demonstrate good omnidirectional patterns in the whole frequency band, which can be widely used for indoor 4G-LTE indoor distributed antenna system (DAS) applications.
Citation
Lei Zhou, Yong-Chang Jiao, Chi Zhang, Yihong Qi, and Tao Ni, "Wide Bandwidth Horizontally-Polarized Omnidirectional Antennas for Indoor Distributed Antenna System Applications," Progress In Electromagnetics Research C, Vol. 61, 47-54, 2016.
doi:10.2528/PIERC15112304
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