Pneumatic extendable antenna for water deployable buoy

Details Pneumatic extendable antenna for water deployable buoy Pneumatic extendable antenna for water deployable buoy

1990-10-18

1992-07-21

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Waterborne

343902, H01Q 134

Patent

active

051326965

ABSTRACT:
A water-deployable whip antenna is extendable from a shortened configuration to a lengthened configuration. The body of the antenna is made up of a plurality of hollow frusto-conical segments which are slidably nested inside each other when the antenna is in its shortened configuration. To telescope the segments and thereby place the antenna in its lengthened operational configuration, a compressible container is housed within the segments. When the container is filled with pressurizing gas, the container expands to telescope the segments relative to each other. Additionally, a weighted ballast and electronic control circuitry are attached to one end of the antenna. In order to float the antenna in a vertical orientation, an air-filled stability bag is disposed around the antenna near the antenna's weighted end.

REFERENCES:
patent: 2172117 (1939-09-01), Beaufort et al.
patent: 2534710 (1950-12-01), Golian et al.
patent: 2593432 (1952-04-01), Freas
patent: 2646504 (1953-07-01), Gosline

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