NDLI: HF RFID transponder with phase demodulator for very high bit-rates up to 13.56 Mbit/s

Content Provider	IEEE Xplore Digital Library
Author	Auer, M. Missoni, A. Kargl, W.
Copyright Year	2010
Description	Author affiliation: Development Center Graz, Infineon Technologies Austria AG, Austria (Missoni, A.; Kargl, W.) \|\| Institute of Electronics, Graz University of Technology, Austria (Auer, M.)
Abstract	Sending larger data volumes over an air interface requires high transmission rates and a demodulator to recognize this data. Amplitude demodulators have been used in the past to detect data rates up to 848 kbit/s and phase demodulators have been used to achieve data rates of 424 kbit/s. This paper presents a 13.56MHz HF transponder with a phase demodulator for very high bit-rates based on the passive near field coupling. The integrated phase demodulator detects phase modulated signals with a bit-rate up to 13.56 Mbit/s at an operating range of 4 cm. On the transponder chip a complete RFID analog front end is integrated. It includes a typical common HF-RFID antenna, for high data rates optimized shunt, phase demodulator and load modulator. A novel phase demodulator principle is introduced in this paper. It uses phase-locked loop (PLL) to obtain accurate time reference for the phase detectors. This allows recognizing the phase shift by the comparison of the incoming phase modulated data with the phase of the time reference. The phase demodulator reported in this paper uses two phase detectors working in an alternating mode. This solution allows to recognize phase shifts of the received data from the antenna with double data rate compared to the solution with one phase detector. The demodulator has been implemented in a 90nm Flash CMOS technology with a supply voltage of 1.5V and a power consumption of 0.56mW. Measurement results show that the phase demodulator is able to recognize very small phase changes down to 5 degrees at a bit rate of 13.56 Mbit/s.
Starting Page	69
Ending Page	76
File Size	2053743
Page Count	8
File Format	PDF
ISBN	9781424457427
e-ISBN	9781424457434
DOI	10.1109/RFID.2010.5467248
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase modulation Hafnium Detectors CMOS technology Transponders Phase locked loops Phase detection Signal detection Radiofrequency identification Demodulation
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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