Multipurpose submarine antenna

Details Multipurpose submarine antenna Multipurpose submarine antenna

1976-02-06

1977-06-14

Lieberman, Eli

Communications: radio wave antennas

Antennas

Waterborne

343725, 343895, H01Q 134, H01Q 136

Patent

active

040301001

ABSTRACT:
An IFF antenna is disposed symmetrically about a vertical axis. A power divider and a pair of transmission lines are provided to symmetrically feed the IFF antenna. A GPS antenna is disposed coaxially of the vertical axis and above the IFF antenna. A gap is provided between the top of the IFF antenna and the bottom of the GPS antenna having a predetermined width. A three wire balun is disposed coaxially of the vertical axis and within the IFF antenna to feed the GPS antenna and a conductive shield is disposed coaxially of the vertical axis surrounding the three wire balun and interconnecting the IFF antenna and the GPS antenna for isolation therebetween.

REFERENCES:
patent: 2987721 (1961-06-01), Edwards et al.
patent: 3942180 (1976-03-01), Rannou et al.

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