ANTENNA FOR AN OMNIDIRECTIONAL RANGE

摘要

The omnirange antenna consists of two crossed slot antennas (50) and two horizontal Alford loops (51, 54) arranged, respectively, above and below the slot antennas. Interposed between the slot antenna (50) and the Alford loops (51, 54) are horizontal metal sheets (52, 53). All radiating elements and the metal sheets are supported by a tube (7) which is connected with a counterpoise (55) and disposed around the axis of symmetry of the antenna. The slot antennas are fed so that a rotating figure-8 pattern is produced. The antenna is suitable for a VOR (VOR = VNF omnidirectional range).