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A Design of Modulator and Demodulator for a Passive UHF RFID Tag Using DTMOST Compatible with C1 G2 EPC Standard Protocol

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Abstract

This paper presents a modulator and low power ASK demodulator that uses a new technique. This technique uses the dynamic threshold MOSFET to reduce the threshold voltage of diodes connected MOS transistors as a barrier in the design of the envelope detector. This circuit has been simulated in a 90 nm CMOS technology to satisfy EPC Class 1 Generation 2 standard protocol. The proposed circuit can correctly demodulate the minimum input power −20 dBm for a modulation index of 37–100 % with 40–160 kb/s data rates. The proposed technique has reduced energy consumption at 11.44 nW at 0.4 V, 27 °C. This will increase the operating range of the RFID tags.

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Authors and Affiliations

  1. CED-ST; LESSI; Faculty of Sciences Dhar El Mehraz, University Sidi Mohamed Ben Abdellah, BP 1796 Fez-Atlas, 30003, Fez, Morocco

    Smail Hassouni & Hassan Qjidaa

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  1. Smail Hassouni
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  2. Hassan Qjidaa
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Correspondence to Smail Hassouni.

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Hassouni, S., Qjidaa, H. A Design of Modulator and Demodulator for a Passive UHF RFID Tag Using DTMOST Compatible with C1 G2 EPC Standard Protocol. Int J Wireless Inf Networks 22, 407–414 (2015). https://doi.org/10.1007/s10776-015-0292-x

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  • DOI: https://doi.org/10.1007/s10776-015-0292-x

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