IDENTIFICATION SENSOR FOR LARGE DEPTH BURIALS

摘要

A transponder for a wireless communication and contactless identification system, of the RFID type, intended to be affixed to (or near) buried structures, said transponder comprising: - a set of antenna segments made up of electrical conductors constituting at least first and second antenna elements (203-1, 203-2), - a printed circuit comprising an RFID chip and at least one tuning capacitor (202x) as well as a connector (281) allowing the electrical connection of said antenna segments; characterized in that said antenna segments are arranged close to each other, at a distance of less than 3 mm and preferably less than 1 mm, so as to allow the appearance of coupling capacitors (280) capable of expanding the tolerance band on the RFID resonance frequency.