Buoy antenna for a submarine

Details Buoy antenna for a submarine Buoy antenna for a submarine

H - Electricity

01

Q

351/7, 351/9

H01Q 1/04 (2006.01) B63G 8/42 (2006.01)

Patent

CA 1179056

PHD. 80-103 9 ABSTRACT: For radio communication with submarine vessels frequency ranges with very low frequencies are used. Even at these frequencies the penetration depth in salt water is only approximately 10 to 20 metres. In order to improve the signal noise ratio or to extend the sub- merging depth use is made of buoy antennas connected to the submarine vessel by a cable. In order to improve the manoeuvrability of the submarine vessel and to avoid the use of an active control system in the antenna, the antenna is constructed as a torpedo-like hollow body, which at the trailing part is equipped with two hydrofoils resembling a horizontal tail unit, which hydrofoils inter- connect the top and bottom of the body to each other as an open arc. Both in the floating body and in the hydrofoils a loop of a crossed-loop antenna is incorporated, which loops are tuned in order to increase the sensitivity. Sig- nal transmission to the submarine vessel is effected via an optical fibre guide, which also transmits the traction force.

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