Method for producing a flat flexible antenna
AssigneeTexas Instruments Incorporated
InventorLoek D'Hont
Life of this patent
Estimating the term…
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.
Claims3
A method for producing a flexible antenna comprising the steps of:
- forming a flexible antenna core from a plurality of longitudinally extending chains of magnetic soft material maintained in a fixed relationship with each other, said step of forming a flexible antenna core comprising the steps of:
- mixing a powder of small particles of magnetic material with a synthetic resin in a vacuum;
- placing said mixture in a static magnetic field to arrange said particles end to end in chains parallel to said field, said chain of particles being electrically insulated from each other by said resin;
- curing said mixture to bond and maintain said particles in said chains;
- and
- removing said magnetic field;
- and
- surrounding said flexible antenna core with electrical windings.
Dependencies are inferred from the claim text.