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Threshold voltage-level change in ASK demodulator related to RF input signal amplitude for the ultra-high frequency RFID passive tag

  • Rezvan Dastanian (a1), Ebrahim Abiri (a2) and Khadije Taherinia (a2)

Abstract

In this paper, an amplitude shift keying (ASK) demodulator with 100% modulation depth is proposed. In order to achieve the higher power and wider reading range the designed ASK demodulator works in the ultra-high frequency. In this design, the average detector and voltage divider are used in order to define the appropriate threshold voltage level for the radio frequency input signal which leads to the accurate data detecting even at long distances between the tag and reader. In addition, for diminishing the power dissipation of the proposed demodulator, an enable input is used in the buffer and comparator. This circuit is simulated in 0.18 μm complementary metal–oxide–semiconductor (CMOS) technology with Cadence software. Its power dissipation and chip area are 3.9 nW and 0.0025 mm2, respectively.

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Corresponding author

Corresponding author: E. Abiri Email: abiri@sutech.ac.ir

References

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[1] EPCglobal, EPCTM Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860 MHz-960 MHz version 1.1.0, 2005.
[2] Ashry, A.; Sharaf, K.; Ibrahim, M.: A compact low-power UHF RFID tag. Microelectron. J., 40 (11) (2009), 15041513.
[3] Najafi, V.; Mohammadi, S.; Roostaie, V.; Fotowat-Ahmady, A.: A dual mode EPC Gen 2 UHF RFID tag in 0.18 µm CMOS. Microelectron. J., 41 (8) (2010), 458464.
[4] Pelissier, M. et al. : A 112 Mb/s full duplex remotely-powered impulse-UWB RFID transceiver for wireless NV-memory applications. IEEE J. Solid-State Circuits, 46 (4) (2011), 916927.
[5] Yeager, D.; Zhang, F.; Zarrasvand, A.; George, N.; Daniel, T.; Otis, B.: A 9 µA, addressable Gen2 sensor tag for biosignal acquisition. IEEE J. Solid-State Circuits, 45 (10) (2010), 21982209.
[6] Yi, J.; Ki, W.H.; Tsui, C.Y.: Analysis and design strategy of UHF micro-power CMOS rectifiers for micro-sensor and RFID applications. IEEE Trans. Circuits Syst. I, 54 (1) (2007), 153166.
[7] Lee, S.Y.; Wang, L.H.; Fang, Q.: A low-power RFID integrated circuits for intelligent healthcare systems. IEEE Trans. Inf. Technol. Biomed., 14 (6) (2010), 13871396.
[8] Balachandran, G.K.; Barnett, R.E.: A passive UHF RFID demodulator with RF overvoltage protection and automatic weighted threshold adjustment. IEEE Trans. Circuits Syst. I, 57 (9) (2010), 22912300.
[9] Reinisch, H. et al. : A multifrequency passive sensing tag with on-chip temperature sensor and off-chip sensor interface using EPC HF and UHF RFID technology. IEEE J. Solid-State Circuit, 46 (12) (2011), 30753088.

Keywords

Threshold voltage-level change in ASK demodulator related to RF input signal amplitude for the ultra-high frequency RFID passive tag

  • Rezvan Dastanian (a1), Ebrahim Abiri (a2) and Khadije Taherinia (a2)

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