— In this article, a travelling wave antenna that covers the 2 to 4 GHz band for human movement recognition is proposed. It is composed of a waveguide structure with slots in order to generate radiating beams in different directions. This frequencyscanned antenna is used to determine the moving target based on the Micro-Doppler radar effect. Then frequency signature obtained from the scanned system provides the 2D radar image of the movement. The antenna performance demonstrates the capability of high resolution beam direction and the relatively complete amplitude and phase information of the moving target. |
