Antenna arrangement, external watch part comprising such an antenna arrangement and method for manufacturing such an external watch part
AssigneeThe Swatch Group Research and Development Ltd
InventorsNicolas Francois, Zoran Randjelovic, Thierry Scordilis
Life of this patent
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Abstract
An antenna arrangement (6) for an external watch part (2) of a timepiece. The antenna arrangement is formed of a technical embroidery, which includes an embroidered structure of insulating wires or natural fibres (10) and at least one conductive wire (12) embroidered so as to produce a fine coil integrated in the embroidered structure of insulating wires or natural fibres. The conductive wire is connected to a radiofrequency integrated circuit (8).
Claims14
An antenna arrangement for an external watch part, formed of a technical embroidery, which technical embroidery comprises an embroidered structure of insulating wires or natural fibres and at least one conductive wire embroidered so as to produce a fine integrated coil in said embroidered structure of insulating wires or natural fibres.
A method for manufacturing an external watch part comprising an antenna arrangement formed of a technical embroidery, which technical embroidery comprises an embroidered structure of insulating wires or natural fibres and at least one conductive wire embroidered so as to produce a fine coil integrated in said embroidered structure of insulating wires or natural fibres, the method comprising the following steps:
- adjusting the technical embroidery in a mould of the external watch part to be produced, and connecting said at least one conductive wire to a radiofrequency integrated circuit inserted in the mould;
- injecting a resin into the mould so as to impregnate the technical embroidery and the radiofrequency integrated circuit;
- curing the resin contained in the mould;
- crosslinking the resin contained in the mould;
- and
- removing the assembly formed of the technical embroidery, the radiofrequency integrated circuit and the crosslinked resin from the mould.
Dependencies are inferred from the claim text.