Radio navigation system

Details Radio navigation system Radio navigation system

1978-03-31

1980-04-08

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343106R, 343113R, G01S 146

Patent

active

041975421

ABSTRACT:
An electronic navigation system ground station, which may be either an omni-range beacon (such as VOR) or a passive direction finder. A circular array of antenna elements has a feed arrangement which includes switched programming of at least one discrete set of phase shifters to effect successively changed phase-rotation fields for minimizing the adverse effects of multipath signals between the ground station and a remote station, aboard an aircraft for example.

REFERENCES:
patent: 3474447 (1969-10-01), Melancon
patent: 3500412 (1970-03-01), Trigon
patent: 3731315 (1973-05-01), Sheleg
patent: 3797019 (1974-03-01), Shestag et al.
patent: 3858218 (1974-12-01), Masak et al.
patent: 3964066 (1976-06-01), Nemit
patent: 4052723 (1977-10-01), Miller
Proceedings of the IEEE, "A Matrix Fed Circular Array for Continuous Scanning", by Boris Sheleg, vol. 56, Nov. 1968, pp. 2016-2027.

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