Title :
Study of a New Millimeter-Wave Imaging Scheme Suitable for Fast Personal Screening
Author :
Gao, Xiang ; Li, Chao ; Gu, Shengming ; Fang, Guangyou
Author_Institution :
Key Lab. of Electromagn. Radiat. & Sensing Technol., Inst. of Electron., Beijing, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
A new millimeter-wave (MMW) imaging scheme is presented, which has potential applications for fast personal screening. The proposed design employs a special pillbox-like quasi-optics that can generate a spot beam with nearly translational scanning pattern to ensure the image uniformity. The 200-GHz heterodyne transceiver was fabricated based on a microwave vector network analyzer (VNA) to couple the MMW into the quasi-optics and to extract the return wave for imaging. Experimental results based on a prototype system demonstrate the good performance of the new imaging scheme and its capability for concealed threat objects detection.
Keywords :
heterodyne detection; millimetre wave imaging; network analysers; object detection; radio transceivers; concealed threat objects detection; fast personal screening; frequency 200 GHz; image uniformity; microwave vector network analyzer; millimeter-wave imaging; pillbox-like quasi-optics; prototype system; return wave; translational scanning pattern; Directive antennas; Imaging; Millimeter wave radar; Radar imaging; Transceivers; Image uniformity; millimeter-wave (MMW) imaging; personal screening; pillbox-like quasi-optics; spot beam;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2203574
