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Session: WE4A3:30 PM Wednesday, May 26, 2010 Room: 205AB |
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Session: WE4A | RFID and power harvesting technologies |
Chair: | Apostolos Georgiadis, Centre Tecnologic de Telecomunicacions de Catalunya (CTTC) |
Co-Chair: | Luca Roselli, University of Perugia |
Abstract: | RFID is becoming a pervasive technology profitably contributing to many industrial and commercial activities. In particular, significant interest has been directed towards low profile, low power, energy efficient and self sustainable networked devices including elementary nodes based on RFID tags. This session deals with some of the principal aspects relevant to RFID technology providing also innovative ideas for better exploitation of its potentialities; among them it is worth citing: non linearities and harmonic generation, advanced measurement techniques, power consumption optimization, efficient modulation techiques, green and organic electronics developments. |
| | WE4A-1 | Long range, low power UHF RFID analog front-end suitable for batteryless wireless sensors | 3:30 PM-3:40 PM | A. Vaz1, H. Solar1, I. Rebollo2, I. Gutierrez1, R. Berenguer1, 1CEIT and Tecnun, San Sebastian, Spain, 2Farsens, San Sebastian, Spain |
(1438) | A long range, low power UHF RFID analog front-end suitable for batteryless wireless sensors has been designed using a low cost 0.35µm CMOS standard process. The proposed front-end architecture allows the implementation of power management techniques that together with the power optimized blocks such as voltage limiter, ASK demodulator… provides a long reading range. The implemented voltage multiplier uses Schottky diodes to provide efficiencies higher than 35%. The measured UHF RFID analog front-end current consumption is 7.4µA. When assembling the analog front-end to a matched dipole antenna, the analog front-end would be able to provide a wireless communication up to 2.4m, from a 2W EIRP output power reader to a digital module + sensor, with an average power consumption up to 37.5µW. These characteristics allow the use of the proposed analog front-end in batteryless wireless sensor networks. | | |
WE4A-2 | An RFID System with Enhanced Hardware-Enabled Authentication and Anti-counterfeiting Capabilities | 3:40 PM-4:00 PM | V. Lakafosis1, A. Traille1, H. Lee1, G. Orecchini3, E. Gebara1, M. M. Tentzeris1, J. Laskar1, G. DeJean2, D. Kirovski2, 1Georgia Institute of Technology, Atlanta, United States, 2Microsoft Research, Redmond,, United States, 3University of Perugia, Perugia, Italy |
(1723) | This paper introduces a new RFID system with enhanced hardware-enabled authentication and anti-counterfeiting capabilities. The system relies on the near-field RF effects between the multiple antennas of the reader and the uniquely modified substrate of the RF certificates of authenticity. A new stand-alone, low cost reader with 5 by 5 antennas is used to accurately extract the near-field response of RF certificates of authenticity meant to complement typical RFID tags in the 5 to 6 GHz frequency range. The RF characterization of all the reader's components has been performed for calibration purposes. The design methodology for generating RF-COA instances that yield unique RF fingerprints is outlined. Rigorous performance and robustness test results, including uniqueness among different instances, repeatability robustness for same instance, 2D to 3D projection comparison and variation in conductive material density, are reported and verify the unique features of this technology. | | |
WE4A-3 | Crossed dipole frequency doubling RFID TAG based on paper substrate and ink-jet printing technology | 4:00 PM-4:10 PM | F. Alimenti1, V. Palazzari1, G. Orecchini1, G. Pinca2, P. Mezzanotte1, M. M. Tentzeris3, L. Roselli1, 1University of Perugia, Perugia, Italy, 2Wireless Solutions S.r.l., Passignano sul Trasimeno, Italy, 3Georgia Institute of Technology, Atlanta, United States |
(1428) | A frequency doubler TAG structure realized on both plastic and paper is presented. It is based on the crossed dipole structure, but uses four diodes in a bridge configuration to form a balanced multiplier layout and incorporates the necessary DC path in a simple way within the structure. Measurements results are presented for both the plastic and paper structure, showing the feasibility of economic and green electronics on paper. | | |
WE4A-4 | Harmonic Generation from Integrated Nonlinear Transmission Lines for RFID Applications | 4:10 PM-4:30 PM | F. Yu, K. G. Lyon, E. C. Kan, Cornell University, Ithaca, United States |
(1371) | Self-interference has been a serious problem in passive RFID systems. We propose a new solution using nonlinear transmission lines (NLTLs) for efficient second and third harmonic generation. Three designs for different frequency bands, in discrete and distributed lines, are implemented in IBM 8RF 0.13μm CMOS process. The NLTL with Bragg cutoff frequency of 10 GHz shows −10 dBm second harmonic and −15 dBm third harmonic power by 0 dBm small signal input with a layout area of 0.4 mm by 1.8 mm. This demonstrates the advantages of compact size and passive operation of NLTL in RFID transponder applications. | | |
WE4A-5 | A device-level analog and digital subsystem SPICE library for the design of low-cost pentacene OFET RFIDs | 4:30 PM-4:40 PM | R. Tinivella1, S. Shen1, M. Pirola1, G. Ghione1, V. Camarchia2, 1Politecnico di Torino, Torino, Italy, 2Italian Institute of Technology, Torino, Italy |
(1500) | A device-level SPICE library based on an integrated organic pentacene OFET process by Philips has been developed to carry out the design of the analog and digital subsystems required in the implementation of low-cost high volume RFIDs. The OFET model was fitted through the use of a modified MOSFET SPICE model. Simulations are shown to validate the technological choice and to demonstrate the feasibility in the implementation of a passive RFID operating at 12 V bias voltage | | |
WE4A-6 | Temporally Resolved Impedance Measurement of Differential, RF-Powered Devices using the Example of a Microwave RFID Front-End | 4:40 PM-5:00 PM | C. Bansleben1, S. Kühn2, N. Gay1, W. J. Fischer1, 1Fraunhofer IPMS, Dresden, Germany, 2Ferdinand-Braun-Institut, Berlin, Germany |
(1440) | This work was motivated by the idea to monitor the input impedance of differential front-ends of passive RFID-transponders depending on their power-consumption. Different methods readily available in state-of-the-art network analyzers are compared with regard to the special demands imposed by passive RFID front-ends. At this the correct stimulation of the DUT appears to be the major issue of conventional methods. Hereupon a new approach is proposed which for the first time combines the proper stimulation of differential, RF-powered devices with the data aquisition of differential mixed-mode S-parameters in temporal resolution. The new measurement method is applied to a 2.45GHz RFID transponder showing detailed mixed-mode results of its power-up behavior. | | |
WE4A-7 | Co-design of Ultra Low Power RF/Microwave Receivers and Converters for RFID and Energy Harvesting Applications | 5:00 PM-5:10 PM | A. Costanzo1, M. Fabiani1, A. Romani1, D. Masotti2, V. Rizzoli2, 1University of Bologna, Cesena, Italy, 2University of Bologna, Bologna, Italy |
(1234) | The paper addresses a new approach to the integrated design of RF/Microwave receivers for power harvesting and conversion systems for ultra-low power densities. Such systems can be very useful in typical humanized environments in the presence of existing wireless systems with power densities as low as a few uW/cm2. Despite of the scarce RF power available, energy usable to extend battery life or to self-power low-duty cycle electronics may be scavenged by highly efficient receivers and power converter circuits designed in a unique design process. A multi-band antenna is used as the RF power receiver. Its rigorous frequency-dependent equivalent circuit in the presence of an incident field is used in the joint design of a rectifier stage and of a boost converter that can dynamically track the maximum pow-er point. This is obtained by a new simulation platform combining SPICE-like time-domain models of dispersive multiport components with the transient analysis of the control sub-system | | |
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