Design of 45-Degree Linearly Polarized Antenna Array at W Band
JIN Liang1, GE Jun-xiang1,2, WANG Jie1
1. College of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, China;
2. Institute of Radar Technology of Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, China
Abstract：A 45-degree linearly polarized microstrip antenna array with reflection-canceling unit is proposed at W band.The single-row series-fed antenna array with sidelobe suppression of 25dB is designed by the Taylor-weighted,combined with reflection-canceling unit.Meanwhile the cross polarization is improved in the main lobe by adding the rectangular welt groove.The power divider with first order and ten ways replaces quarter wavelength transmission lines with the T-shaped structure junction,which achieves the power division ratio of 4.5 times.The simulation and measure results show that the antenna works from 75.7GHz to 77.6GHz by arraying.The horizontal and vertical azimuth for 3dB beam width can cover from-5 degrees to 5 degrees,where the cross polarization ratio is all higer 18dB.The gain of the antenna is 24dB and the sidelobe suppression is up to 20dB.The antenna can be used in the vehicle anti-collision radar and further improve whose anti-jamming capability.
金良, 葛俊祥, 汪洁. W波段45°线极化天线阵设计[J]. 电子学报, 2019, 47(6): 1378-1383.
JIN Liang, GE Jun-xiang, WANG Jie. Design of 45-Degree Linearly Polarized Antenna Array at W Band. Acta Electronica Sinica, 2019, 47(6): 1378-1383.
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2019, Vol. 47 
