Radio frequency identification tag, has antenna including two radiating units in form of tracks placed on same side of printed circuit, where units are placed opposite to each other on respective parts whose lengths are adjusted

摘要

The tag has an antenna with radiating units (12, 13) in the form of tracks placed on same side of a printed circuit (10). Each track has length lower than half-wavelength of electromagnetic waves used in an identification system. Each unit is connected to one end of a chip (11) that transmits information through the units (12, 13). The units are placed opposite to each other on respective parts (14, 15) whose lengths are adjusted.