caa a22 4500 445306246 CHVBK 20180317142613.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10762-011-9825-2 doi (NATIONALLICENCE)springer-10.1007/s10762-011-9825-2 Design, Analysis and Measurement of a Millimeter Wave Antenna Suitable for Stand off Imaging at Checkpoints [Elektronische Daten] [Xiang Gao, Chao Li, Shengming Gu, Guangyou Fang] A systematic method is proposed to design a novel beam-scanning antenna with fan-beam, which is suitable for stand off imaging at millimeter wave band. The antenna has not only an elliptical main-reflector to generate thin fan beam, but also a rotating sub-reflector to realize beam scanning function. All these structures are embedded between two parallel metal plates. A Reversed Ray Tracing Algorithm (RRTA) was introduced to optimize the positions and dimensions of the subreflector and the feed horn. A modified Physical Optics method based on Discrete Real Mirror Image theory (DRMI-PO) was developed to efficiently analyze and optimize the field patterns of the antenna with specific structures. Based on above methods, an antenna working at 200GHz is designed and fabricated. The measured patterns are in well agreement with the calculated results. It's found that, the total beam scanning range is about 60cm with its minimum half -power beam widths about 1.7cm in the scanning direction. All the results validate the design method and potential applications of the antenna in the stand off imaging systems. Springer Science+Business Media, LLC, 2011 Beam-scanning antenna nationallicence Stand off imaging nationallicence Elliptical main-reflector nationallicence Rotating sub-reflector nationallicence Gao Xiang Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut Li Chao Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut Gu Shengming Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut Fang Guangyou Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/11(2011-11-01), 1314-1327 1866-6892 32:11<1314 2011 32 10762 https://doi.org/10.1007/s10762-011-9825-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-011-9825-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gao Xiang Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Li Chao Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Gu Shengming Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Fang Guangyou Key Laboratory of Electromagnetic Radiation and Detection Technology, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/11(2011-11-01), 1314-1327 1866-6892 32:11<1314 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer