Abstract
Millimeter-wave imaging has important applications in detecting objects concealed by optically opaque media. A prototype active millimeter-wave (60-GHz band)imaging system researched in NHK Science & Technology Research Laboratories is outlined. The performance of the system when imaging a human mannequin at short range is demonstrated experimentally. The effect on the image when various opaque obstacles such as fog, curtain, and thin plywood are positioned between the imaging system and the mannequin is also shown. Furthermore, research on a 60-GHz band electrically steerable reflectarray antenna for improving the frame rate of the system is introduced.
