RFID reader antennas emit electromagnetic ... So passive RFID systems that rely on near-field communication (typically low- and high-frequency systems) have a shorter read range than those that use ...

while the near field signal decays as the cube of distance from the antenna. So passive RFID systems that rely on far field communications (typically UHF and microwave systems) have a longer read ...

Using advanced UHF radio ... marker field informs the transponder about the current location. In the same moment the transponder sends it location information several times to the reader. For this ...