Radio Frequency Identification (RFID) technology uses radio signals to identify and track objects. The objects being tracked can have active (battery-powered) or passive (unpowered) tags. For high-value assets conventional RFID uses battery-powered tags. These tags have a range of approximately 10 meters depending on the power levels, but have the disadvantage of being bulky in size and requiring periodic battery replacements. Unpowered tags usually have a range of approximately 2 meters.


LLNL’s technology does not use battery-powered tags. Rather it uses a tag technology that has the same range characteristics of battery-powered tags (approximately 10 m) but without the conventional battery.


  • No conventional batteries → no periodic replacements → no human intervention →Lower operating costs
  • Passive, remotely powered → unlimited lifetime → Lower operating costs
  • Longer range than conventional passive tags → More flexibility
  • Built by conventional electronic methods → Lower manufacturing costs
  • Uses UWB technology → less interference in harsh environments → Better performance
Potential Applications

  • Asset management systems
  • Inventory control systems
Development Status

Prototypes are being built. Integration into customer-specific application will be devoted to antenna design, signal processing improvements, and system testing. A U.S. Patent Application has been filed. More invention disclosures are being developed.

Reference Number