Flat flexible antenna
AssigneeTexas Instruments Incorporated
InventorLoek D'Hont
Life of this patent
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Abstract
Apparatus and method for producing a flexible antenna suitable to be incorporated in a badge or similar object. The antenna comprises electrical windings (28, 38) surrounding a flexible antenna core (26, 36). The antenna core (26, 36) is of a material having a high quality factor formed of a plurality of mutually insulated, longitudinally extending chains of magnetic soft material of high .mu.. According to one embodiment, a powder of small particles of a magnetic soft material of high .mu. is mixed with a synthetic resin so that a high saturation of magnetic material in the mixture is formed in a vacuum. The mixture is cured in a strong magnetic field so that the particles form chains (18A, 18B, 18C) of the particle parallel to the applied magnetic field.
Claims11
A flexible antenna comprising:
- a flexible antenna core including a plurality of stacks of longitudinally extending strip-shaped layers of magnetic soft material maintained in a fixed relationship with each other, said flexible antenna core also including an insulating material for electrically insulating adjacent ones of said strip-shaped layers within each stack from each other and also electrically insulating adjacent ones of said stacks from each other;
- and
- electrical windings surrounding said flexible antenna core.
A flexible antenna comprising:
- a flexible antenna core including a plurality of chains of a powder of magnetic material wherein each of said chains maintained in a fixed relationship with each other and electrically insulated from each other by a synthetic resin wherein the powder of magnetic material is bonded and mixed with said synthetic resin to maintain said insulated longitudinal extending chains in a fixed position;
- and
- electrical windings surrounding said flexible antenna core.
An antenna comprising:
- a first longitudinally extending chain of magnetic material;
- a second longitudinally extending chain of magnetic material disposed in an opposed relationship to said first chain of magnetic material, said second chain of magnetic material electrically insulated from said first chain of magnetic material;
- a third longitudinally extending chain of magnetic material disposed in an opposed relationship to both said first and said second chains of magnetic material, said third chain of magnetic material electrically insulated from both said first and said second chains of magnetic material;
- and
- electrical windings proximate said first, second and third longitudinally extending chains of magnetic material.
A flexible antenna comprising:
- a flexible antenna core including a plurality of chains of a powder of magnetic material wherein each of said chains maintained in a fixed relationship with each other and electrically insulated from each other by an insulating material;
- and
- electrical windings surrounding said flexible antenna core.
Dependencies are inferred from the claim text.