The dBs 400-D is a uni-directional, broadband, 12 element, high performance, phased array, which is designed specifically for use as a command destruct antenna used in flight termination systems. It exhibits very low side lobes levels and negative angle radiation (minimizes multipath). The above-the-horizon null-filled pattern minimizes the radiated cone of silence. The dual columns used to create the azimuth pattern provide full 180° half-power azimuth beamwidth.
The antenna can be provided with right- or left-hand circular polarization. The antenna handles input power to 1500 watts CW.