A low-power dual-clock strategy for digital circuits of EPC Gen2 RFID tag

Luo, Qiasi; Guo, Li; Li, Qing; Zhang, Gang; Wang, Junyu

doi:10.1109/rfid.2009.4911177

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…Taking into account that both encoding formats require a transition in the middle of the transmitted symbol, it is necessary to have a clock of at least the double BLF. Since there is no rigid duty-cycle requirement imposed on the clock of 2×BLF, a simple clock doubler [4], [6], which is composed of a delay unit and a XOR gate, is implemented to multiply the BLF by 2. Although the fractional N+0.5 frequency divider helps the baseband processor improve the precision of BLF calibration, it has a defect that makes the duty-cycle of the output clock deviate from 50%.…”

Section: ) Frequency Variation Independent Blf Calibrationmentioning

confidence: 99%

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Design of a passive UHF RFID transponder featuring a variation-tolerant baseband processor

Wang

Mao

Chen

et al. 2010

2010 IEEE International Conference on RFID (IEEE RFID 2010)

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This paper presents the design of a passive UHF RFID transponder in compliance with the ISO 18000-6C protocol operating at the 915MHz ISM band. The proposed tag IC is implemented with several advanced low-power techniques aiming at extending the range of communication. Since the on-chip oscillator is particularly sensitive to process, voltage and temperature (PVT) variations, the baseband processor is designed as a frequency variation-tolerant circuit in order to accommodate the fluctuation of the frequency from the local oscillator, which is anticipated to decrease the percentage of failed chips and enhance the performance of tags working in critical conditions. The tag chip is fabricated using Chartered 0.18μm 1P6M standard CMOS process and occupies 0.54mm 2 area. And the minimum power to read the assembled transponder (connect the chip with a dipole antenna) is -11.4dBm.

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Section: ) Frequency Variation Independent Blf Calibrationmentioning

confidence: 99%

“…And it's well known that the decision of a tag's clock frequency is crucial to working distance [6]. However, a huge challenge concerning the clock frequency is that an accurate frequency cannot be achieved as a result of process, voltage and temperature (PVT) variations.…”

Section: Introductionmentioning

confidence: 99%

Design of a passive UHF RFID transponder featuring a variation-tolerant baseband processor

Wang

Mao

Chen

et al. 2010

2010 IEEE International Conference on RFID (IEEE RFID 2010)

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Radio Frequency Identification (RFID)

Shields

Carthy

Riordan

et al. 2015

Wiley Encyclopedia of Electrical and Electronics Engineering

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Radio Frequency Identification (RFID) technology is a method of wirelessly transferring data between transceiver and transponder, where the transponder (tag) is attached to any object one may need to identify. These objects may be either living or inanimate and via the attached transponder can carry customized data, an approach that is core to the functioning of these systems. This facilitates its ability to provide unique ID (serialization) to each individual item making RFID technology one of the most popular and widely adopted auto ID technologies to date. RFID has been successfully used to track, trace, locate, and identify many objects and offers a new approach to asset traceability/visibility. RFID has been successfully integrated across a wide variety of industries including animal identification, pharmaceutical, building access control, toll collection, vehicle immobilization systems, aviation industry, waste management, and mining industries (C.‐C. Chao, J.‐M. Yang, and W.‐Y. Jen. Determining Technology Trends and Forecasts of RFID by a Historical Review and Bibliometric Analysis from 1991 to 2005. Technovation 2007, 27, pp 268–279; E. Ngai and F. Riggins. RFID: Technology, Applications, and Impact on Business Operations. Int. J. Prod. Econ . 2008, 112, pp 507–509; C. M. Roberts. Radio Frequency Identification (RFID). Comput. Secur . 2006, 25, pp 18–26). Its ability to wirelessly transfer data offers many operational advantages over the conventional barcode.

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