An antenna for generating an electromagnetic field including several planar inductive cells parallel connected in an array and forming, in association with at least one capacitor, an oscillating circuit adapted to being excited by a high-frequency signal. One face of the non-woven fabric is provided with a thin permeable layer formed by flakes which receive the print. An apparatus includes a system controller; a global positioning system receiver coupled to the system controller; a radio frequency locating receiver coupled to the system controller; and an operator interface coupled to the system controller. An adhesive layer is utilized to adhere a conductive substrate and the light emitting diode epitaxy structure.