COMBINED SHIPBORNE QUASI-COLLINEAR ANTENNA FOR AUTOMATIC IDENTIFICATION SYSTEM Russian patent published in 2015 - IPC H01Q19/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and provides a combined shipborne quasi-collinear antenna for an automatic identification system. The antenna comprises a supporting pipe and inphase-driven dipoles. The dipoles are mounted on the supporting pipe and are separated from each other by a distance of λ/2 of the average wavelength of the operating frequency range. The dipoles are a double triangular zigzag structure with a vertical polarisation. The dipoles are offset from each other about an axis by an angle π/2. The supporting pipe is in the form of a double-conductor symmetrical feeder line made of tubular conductors. An antenna feed cable is laid in one of the conductors and a GPS antenna feed cable is laid in the other conductor. The ends of the tubular conductors are electrically connected. The tubular conductors are corrugated between the dipoles. The dipoles are electrically fed from the supporting double-conductor symmetrical feeder line.

EFFECT: simple design of the antenna, simple electrical power supply, obtaining an equally compressed beam pattern in the vertical plane and achieving combined operation of a GPS system with the antenna device.

4 cl, 3 dwg