Millimeter-wave identification--a new short-range radio system for low-power high data-rate applications

The radio-frequency identification (RFID) concept is expanded to millimeter-wave frequencies and millimeter-wave identification (MMID) in this paper. The MMID concept and a comparison with UHF RFID are presented, showing the limitations and benefits of MMID. Three feasible applications are suggested for MMID, which are: 1) wireless mass memory; 2) an automatic identification system with pointing functionality; and 3) transponder communication with automotive radar. To demonstrate the feasibility of the MMID system, experimental results for both downlink and backscattering-based uplink are presented at 60 GHz. Index Terms--Backscattering, millimeter waves, millimeter. wave identification (MMID), RF identification (RFID).