Aircraft landing-guiding apparatus

Details Aircraft landing-guiding apparatus Aircraft landing-guiding apparatus

1978-11-29

1980-11-04

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100SA, H04B 700

Patent

active

042323169

ABSTRACT:
An aircraft landing-guiding apparatus having an antenna system constituted by a plurality of antenna elements arranged in a line and intersecting the course of a runway substantially at right angles at the lengthwise center of the runway.
Phases of sideband signals and carrier signals are shifted at rates having such relationship that sideband patterns and carrier patterns are sent forth from the antenna system at prescribed horizontal angles to the course of the runway.

REFERENCES:
patent: 3518673 (1970-06-01), Hakonsen
patent: 4012739 (1977-03-01), Hofgen et al.

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