Passive and resonating type radiofrequency detection or identification tag for object carrier, has closed loops corresponding to wavelength to be transmitted, where loops are placed close to each other to establish coupling between loops

摘要

The tag (2) has a closed loop (3) operating at UHF, and comprising UHF identification elements placed on a transponder electronic chip (5). A closed loop (7) operating at high frequency has perimeter greater than that of the loop (3), where the loops correspond to wavelength to be transmitted. The loops are placed close to each other so as to establish coupling between them. The loop (3) has a rectangular shaped single turn (4) connected to the components, and includes a capacitor (6) to adjust quality factor of the loop and to set the resonance frequency of the loop.