A Broadband Dual-Polarized Omnidirectional Antenna Based on Orthogonal Dipoles

作者：Fan, Yi; Liu, Xiongying; Liu, Baiyang; Li, RongLin^*

来源：IEEE Antennas and Wireless Propagation Letters, 2016, 15: 1257-1260.

DOI：10.1109/LAWP.2015.2504373

• Broadband antenna
• dual-polarized antenna
• omnidirectional radiation

A broadband dual -polarized omnidirectional antenna is investigated. The proposed dually polarized antenna consists of four vertical dipoles for vertical polarization (VP) and four horizontal dipoles for horizontal polarization (HP), which are uniformly printed around a dielectric cylindrical barrel for omnidirectional radiation. Two broadband feeding networks are employed to excite the vertical dipoles and the horizontal dipoles, respectively. The dual -polarized omnidirectional antenna achieves a bandwidth of similar to 30% (1.7-2.3 GHz) with an isolation of about 25 dB. The gain variations in the horizontal plane are less than 0.5 dB for VP and 1.5 dB for HP. The cross-polarization levels of VP and HP in horizontal plane are around 20 dB. The proposed antenna has a great potential for mobile communications.

• 出版日期2016
• 单位华南理工大学