Patent ID: 8525646

Claim:
A method of manufacturing an inductor coil for an RFID tag, the inductor coil including a pattern of conductive traces, the method comprising: providing an electrically insulating substrate having a predetermined thickness defined by opposed surfaces; producing, using laser ablation, recesses in the electrically insulating substrate on at least one of the opposed surfaces, the recesses reaching to a controlled depth which is smaller than the thickness of the electrically insulating substrate, and the recesses forming a pattern on the surface of the electrically insulating substrate corresponding to the pattern of conductive traces of the inductor coil; and depositing conductive material within the recesses, wherein the depositing conductive material within the recesses includes: depositing conductive material on substantially an entire face of the electrically insulating substrate having the recesses formed therein; and removing conductive material from the surface of the substrate outside the pattern of conductive traces of the inductor coil.