Summary
International Symposium on Antennas and Propagation
2012
Session Number:2B1
Session:
Number:2B1-1
Range Enhancement of Nulling Angle in FN-PMMW Imaging Using Cooling Dielectric Tube Array
Hiroyasu Sato, Kohei Kuriyama, Kunio Sawaya,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
In order to improve the detection performance of concealed objects in clothes by using the passive millimeter wave imaging technique, a forward-nulling passive millimeter wave (FNPMMW) imaging method forwarding a null in the direction of human body and objects has been proposed by the authors [1]. The contrast between human body and conducting objects is improved using a developed nulling source composed of a cooling dielectric tube and a parabolic cylinder, however, range of the nulling angle is narrow and the size of a parabolic cylinder is too large for a practical use. In this paper, a nulling source composed of a cooling dielectric tube array with narrow-width parabolic cylinders is developed to enhance the range of the nulling angle with geometry suitable for the flow of people at the airport security check.