Coil assembly for substantially isotropic flux linkage in a give

Details Coil assembly for substantially isotropic flux linkage in a give Coil assembly for substantially isotropic flux linkage in a give

1985-10-01

1986-12-09

Lieberman, Eli

Communications: radio wave antennas

Antennas

Including magnetic material

H01Q 700

Patent

active

046283242

ABSTRACT:
A coil assembly that is essentially isotropic in a plane normal to the plane of the coil includes two flat coils stacked one next to the other. One coil is connected in series with a resistor in a closed loop and has a strip of high permeability material woven through it. The other coil is tuned by a parallel capacitor across its coil terminals, such terminals being connected to electronic circuitry. The coil is separated from the printed circuit board that contains the electronic circuitry by a sheet of high permeability material. The assembly is self-contained and powered by a flat battery on which the circuit board is placed. Another embodiment is disclosed that contains only one coil, the terminals of which are connected to a suitable electronic circuit, not shown. Strips of high permeability material are disposed on both sides of the coil and an assembly is produced with a printed circuit board and a flat battery.

REFERENCES:
patent: 2870442 (1959-01-01), Polydoroff
patent: 2953785 (1960-09-01), Granquist

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