Patent ID: 8327522

Claim:
A process for a collective fabrication of remotely interrogable sensors, each sensor comprising at least one first resonator and at least one second resonator, each of the at least one first resonator and each of the at least one second resonator comprising acoustic wave transducers and of a design such that the at least one first resonator and the at least one second resonator exhibit respectively a first and a second operating frequency, comprising the following steps: fabricating a first series of first resonators, each of said first resonators comprising the first operating frequency belonging to a first set of frequencies centered on a first mean frequency; fabricating a second series of second resonators, each of said second resonators comprising the second operating frequency belonging to a second set of frequencies centered on a second mean frequency; and a series of pairings of a first resonator and of a second resonator so as to form pairs of resonators exhibiting a difference of operating frequencies which is equal to a difference of the first and second mean frequencies.