An Antenna for Controlling the Nonfading Range of Broadcasting Stations

A new type of broadcast antenna is described which radiates very little energy over a wide, high angle. The angle above which minimum energy is radiated can be varied electrically from 40° to 60°, thus permitting the fading wall to be adjusted for maximum primary service. The electrical height of the antenna is dependent upon the specific vertical pattern desired but is approximately 300°. The results of experiments with small model antennas are in good agreement with theory.