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Ultra-low power current mode all- MOS ASK demodulator for radio frequency identification applications

Mousavi, N ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1049/iet-cds.2014.0252
  3. Publisher: Institution of Engineering and Technology , 2016
  4. Abstract:
  5. An ultra-low power amplitude shift keying (ASK) demodulator for radio frequency identification (RFID) tags is presented. On the basis of a fast averaging stage, the proposed ASK-demodulator uses a current domain switching envelope amplifier which yields low-power operation. More importantly, it removes the need for a conventional voltage comparator. Designed and fabricated in a 0.18 μm complementary metal-oxide-semiconductor process on about 3000 μm2 silicon area, the proposed demodulator consumes only 7.5 μA from a magnetically coupled induced power. Operating with a 13.56 MHz carrier frequency, the circuit supports modulation indices from 7 up to 100%. The demodulator may as well be used in passive biomedical devices where power efficiency is crucial. © The Institution of Engineering and Technology 2016
  6. Keywords:
  7. Demodulators ; Metals ; MOS devices ; Oxide semiconductors ; Radio waves ; Semiconducting silicon ; Amplitude-shift keying demodulators ; Biomedical devices ; Carrier frequency ; Complementary metal oxide semiconductor process ; Domain switchings ; Envelope amplifiers ; Low-power operation ; Radio-frequency-identification tags (RFID) ; Radio frequency identification (RFID)
  8. Source: IET Circuits, Devices and Systems ; Volume 10, Issue 2 , 2016 , Pages 130-134 ; 1751858X (ISSN)
  9. URL: http://digital-library.theiet.org/content/journals/10.1049/iet-cds.2014.0252