DOUBLE-FREQUENCY LOCALISER BEACON (VERSIONS) Russian patent published in 2016 - IPC G01S1/02 

FIELD: radio engineering, communication.

SUBSTANCE: double-frequency localiser beacon comprises a narrow channel transmitter, a wide channel transmitter, an antenna array which, in the first version of the localiser beacon, consists of N (N≥1) pairs of radiating elements: N left-side radiating elements and N right-side radiating elements (relative to the extension of the runway centre line), an antenna array with an odd number 2N+1 (N≥1) of the radiating elements, as well as: N left-side radiating elements, N right-side radiating elements and a centre radiating element in the second version of the localiser beacon, N three-decibel quadrature directional couplers, N 90° phase changers in the second version of the localiser beacon, the first and second directional couplers, the first 90° phase changer and the second 90° phase changer in the first version and the first 90° phase changer and the second 180° phase changer in the second version, a "side frequency" signal power divider and a "side frequency plus carrier" signal power divider.

EFFECT: simple equipment, reduced electromagnetic energy losses, reduced error accumulation in the amplitude-phase distribution of signals.

2 cl, 16 dwg, 5 tbl