A first conductive pattern is printed on a first insulating film and includes a transmitting antenna, a receiving antenna, an inductor section, and a diode connected in parallel with the inductor section. The inductor and parallelly-connected diode form an LC resonator of the first conductive pattern....http://www.google.es/patents/US4783646?utm_source=gb-gplus-sharePatente US4783646 - Stolen article detection tag sheet, and method for manufacturing the same
Stolen article detection tag sheet, and method for manufacturing the same
