ANTENNA Russian patent published in 2008 - IPC H01Q21/08 

FIELD: microwave radio engineering.

SUBSTANCE: proposed antenna has distribution system provided with sum input connected to its center and built on rigid coaxial line, as well as dipole radiators. Connected to dipole radiators closest to center of distribution system is rigid coaxial line section that forms ring bridge together with quarter-wave sections connecting sum input to dipole radiators. First difference input is connected to ring bridge at distance of quarter-wavelength from first radiator and three quarter-wavelengths from second radiator. Second difference input is connected symmetrically to first difference input. Dipole radiators and points of their connection to distribution system are sealed by potting them in foam polyurethane and by means of rubber rings.

EFFECT: provision for three-channel arrangement of identification system, formation of sum and two difference patterns, reduced mass and size, wind loads, and cost.

4 cl, 3 dwg