ANTENNA FOR DIRECTION FINDING SYSTEMS

摘要

An antenna arrangement for a shipboard direction finding system is designed to be carried on the ship mast and includes electrically parallel connected, substantially vertically polarized dipole antennas which are uniformly distributed circumferentially in a circle with their radiating elements outwardly inclined from the antenna mast and forming an angle of approximately 30 DEG therewith. A motor controlled rotating differential condenser is connected between the dipole halves and ground to provide means for bringing the dipoles into capacitive symmetry. The antenna arrangement is adapted to be used in proximity to a mast-carried UHF direction finding antenna system through the use of two-terminal networks connected to the dipole elements.