Patent ID: 8319610

Claim:
A radio-frequency identification (RFID) tag antenna, comprising: a patterned conductive loop having a plurality of longitudinal conductive sections and a plurality of transverse conductive sections connecting to each end of the longitudinal conductive sections to serve as a matching network; a pair of extended conductive arms electrically connected to the patterned conductive loop via two nodes, wherein the pair of extended conductive arms is a pair of tapered dipole antennas which width becomes thinner outwardly; a bonding pad with an RFID chip disposed thereon, arranged at the central area between the pair of extended conductive arms; and a pair of second conductive segments respectively connected to a thinner end of the pair of tapered dipole antennas, wherein the pair of second conductive segments are substantially perpendicular to the pair of tapered dipole antennas or are extended along any included angle, and wherein a length and a width of the pair of second conductive segments are dependent upon the impedance and frequency response of the RFID chip.