Mounting and connecting an antenna wire in a transponder
During mounting to an inlay substrate, at least one end portion (including end) of an antenna wire is positioned directly over a terminal of the chip module for subsequent connecting thereto. A sonotrode is disclosed with a cutter above the capillary for nicking the wire. The antenna may comprise two separate stubs, each having an end portion (including end) positioned over a terminal of the chip module. Additional techniques for mounting the antenna wire are disclosed.
1. A method of mounting a wire to an inlay substrate for a transponder comprising a substrate, a chip module and an antenna wire disposed on the substrate, said chip module comprising two terminals, the method comprising:
during mounting the wire, ensuring that at least one end portion including an end of the wire is positioned directly over a corresponding at least one terminal of the chip module for subsequent connecting thereto without requiring repositioning;
wherein:
the antenna wire comprises two lengths, or “stubs” of wire;
a first of the two stubs of antenna wire is formed by first embedding on the substrate, then causing a first unembedded end portion of the antenna wire to be located directly over a corresponding first one of the two terminals of the chip module;
a second of the two stubs of antenna wire is formed by first embedding on the substrate, then causing a second unembedded end portion of the antenna wire to be located directly over a corresponding second one of the two terminals of the chip module.
2. The method of claim 1 , further comprising
connecting the two distal ends of the two stubs of antenna wire together.
3. The method of claim 2 , further comprising
connecting the two distal ends of the two stubs of antenna wire together at a capacitor.
4. The method of claim 1 , wherein:
the stubs are of unequal length.
5. The method of claim 1 , further comprising
subsequently connecting the two unembedded end portions of the antenna wire stubs to the corresponding two terminals of the chip module.