X-band RADAR Reflected Signal Measurement of Gallium-based Liquid Metal

RADAR(Radio Detection and Ranging) is an important system for surveillance reconnaissance by detecting a reflected signal which obtains the range from radar to target, velocity of target. The magnitude varies due cross section characteristic transmission reception antenna, distance between power wavelength transmitted signal. Thus, RCS target determine if can be observed RADAR system. It based on material shape We have measured reflection simple square-shaped (20 × 20 cm) made new material, gallium-based liquid metal alloy compared that well-known metals including copper, aluminum. aluminum was largest it 2.4 times larger than also investigated effect measuring reflectance F-22 3D model(~1/95 ratio) covered with/without aluminium, metal. side-view with copper-covered model 2.6 greater study would helpful metal-based frequency selective surface or metamaterials.