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Power management unit for battery assisted passive RFID tag

Power management unit for battery assisted passive RFID tag

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© The Institution of Engineering and Technology
Published

A power management unit for a battery assisted passive radio frequency identification tag is proposed. The key building block is a two-stage wake-up circuit with 23 nA sleep current and process, voltage, temperature insensitive wake-up detection performance. Wireless energy recycle is realised with up to 50 µA charge current. The circuits make it possbile to use tag package compatible thin-film batteries.

Inspec keywords: radiofrequency identification; telecommunication power supplies; battery management systems

Other keywords: wake-up detection performance; two-stage wake-up circuit; wireless energy recycling; radio frequency identification; battery assisted passive RFID tag; power management

Subjects: Other radio links and systems; Telecommunication power supplies; Power convertors and power supplies to apparatus

References

    1. 1)
      • N. Dudney . Solid-state thin-film rechargeable batteries. Mater. Sci. Eng. B , 3 , 245 - 249
    2. 2)
      • Kim, S., Cho, J.: `An EPC Gen2 compatible passive/semi-active UHF RFID transponder with embedded FeRAM and temperature sensor', IEEE ASSCC, November 2007, Jeju, Korea.
    3. 3)
      • Che, W., Yang, Y.: `Analysis, design and implementation of semi-passive Gen2 tag', IEEE Int. Conf. RFID, April 2009, Orlando, FL, USA, p. 15–19.
    4. 4)
      • Pletcher, N., Gambini, S., Rabaey, J.: `A 2 GHz 52 µW wake-up receiver with −72dBm sensitivity using uncertain-IF architecture', IEEE ISSCC, February 2008, San Francisco, CA, USA.
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