7. The Active Denial System Manufactured by Raytheon (RTN), ADS uses high power microwave energy transmission, at a frequency of 95GHz. The emission is focused and directed at the target by a directional planar array antenna. The microwave energy penetrates a living tissue (such as human skin) to a depth of 0.5 millimeter and almost instantly produces a heating sensation that within seconds becomes intolerable and forces the subject to flee.