Patent ID: 8440487

Claim:
A method for manufacturing a radio frequency (RF) powder comprising a plurality of RF particles, each RF particle comprising a circuit element, the method comprising: forming a plurality of circuit elements, each corresponding to a different RF particle, on a first surface of a substrate, the substrate further including a second surface that is opposite the first surface; etching grooves into the first surface of the substrate between the plurality of circuit elements; forming a protective material over and in direct contact with surfaces of each of the plurality of circuit elements and the substrate defining sidewalls of each of the grooves such that a surface of the substrate at a bottom of each of the grooves remains exposed; forming an adhesive material over the protective material and filling the grooves in the surface of the substrate on which the plurality of circuit elements are formed before removing the substrate; and removing a first portion of the substrate between the second surface of the substrate and bottoms of the grooves so that each of the plurality of circuit elements is associated with a different remaining portion of the substrate.