Core design for flexible H-sensor for ELF

Details Core design for flexible H-sensor for ELF Core design for flexible H-sensor for ELF

1974-12-23

1976-01-13

Lieberman, Eli

Communications: radio wave antennas

Antennas

Including magnetic material

343895, 174102R, 174108, H01Q 708

Patent

active

039328724

ABSTRACT:
A counterwound, magnetic core for a towed-cable, helically wound, ELF anta comprising a cylindrical, plastic, center insert, with or without a center conductor, with two strips or sets of strips of magnetic material counterwound about it so that a plurality of good-mechanical-contact, strip, crossover points are formed distributed around the circumference of the insert and down its length. An insulating material is then wrapped around these counterwound strips and a conductor helically wound around that. This design, by providing alternate flux paths down the core via the crossover points provides a lower, core reluctance and, when the core is under stress, provides a flux path that avoids the high-stress regions of the core thus reducing the amount of flux that is stress-modulated. Thus a substantial magnetostrictive noise reduction is obtained.

REFERENCES:
patent: 3068477 (1962-12-01), Tennyson

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