Future RFID and Wireless Sensors for Ubiquitous Intelligence

Zheng, Lirong; Nejad, Majid Baghaei; Zou, Zhuo; Mendoza, David S.; Zhang, Zhi; Tenhunen, H.

doi:10.1109/norchp.2008.4738269

Cited by 31 publications

(13 citation statements)

References 14 publications

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“…The downlink, from a reader station to a sensor or tag, provides the energy, control commands, and clock for synchronisation in a UHF band, with the data rate being usually lower. A concept of an asymmetric communication scheme for RFID scenarios was introduced by Zheng et al in [1] and has been manufactured and characterised in the works of Baghaei-Nejad and Radiom et al in [2] and [3].…”

Section: Asymmetric Communication Schemementioning

confidence: 99%

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Gentner¹,

Langwieser²,

Scholtz³

et al. 2013

J Embedded Systems

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In this contribution, we describe and analyse a miniature wireless radio frequency identification (RFID) chip with on-chip antennas (OCA) and ultra wideband (UWB) signalling by real-world measurements. With the on-chip antenna approach, no external antennas are required, and the size of the overall tag is identical to the size of the chip alone (3.5 mm × 1 mm). The chip is powered through inductive coupling and controlled by an RFID signal at 866 MHz in the downlink, while the uplink transmits a quaternary pulse-position-modulated (4-PPM) UWB signal at 5.64 GHz with pulses having a duration in the order of nanoseconds. In this contribution, the hybrid or asymmetric communication scheme between prototype chip and reader, the embedded OCA, and the measurement setup are described. The prototype achieves 4-PPM bit rate of 126 Mbit/s based on a pulse-train transmission with a duration of 10 μs. The small size, high data rate, and fine time resolution of the UWB impulse radio offer new features and sensing capabilities for future RFID-like applications.

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Section: Asymmetric Communication Schemementioning

confidence: 99%

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Gentner¹,

Langwieser²,

Scholtz³

et al. 2013

J Embedded Systems

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“…However, the UHF RFID tags transmit signals by backscattering, a method that modulates the reflected power and carrier wave from the tag antenna to the reader antenna (Dobkin 2012). Thus, the path loss of RFID tag backscattering scales as the inverse fourth power of the distance, which increases the identification difficulty in specific environments such as a dense multi-path and multi-user environment (Zheng et al 2008;Mao et al 2011). Moreover the data rate is lower than few hundreds of kilo-bit per second Mao et al 2011), limiting the performance of inventory time.…”

Section: Introductionmentioning

confidence: 99%

Interactive UHF/UWB RFID tag for mass customization

et al. 2016

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Mass customization (MC) under the context of the Internet of Things (IoT) is expected to reform the traditional mass manufacturing. To contribute to MC from information communication and user interaction aspects, this work proposes an Ultra-High Frequency (UHF) RFID tag with an Impulse-Radio Ultra-Wide Band (IR-UWB) transmitter and an inkjet-printed Electrochromic (EC) display. First, compared to the conventional UHF RFID tags, the proposed tag shows the advantage of higher transmission data rate with still low power consumption. The response time in multi-tag accessing scenarios can be reduced to less than 500 ms per 1000 tags by the pipeline of the tag responses in IR-UWB link and the reader acknowledgments in UHF RFID link as well as by reducing the length of empty slots. Second, the tag is integrated with a flexible EC display manufactured by inkjet-printing on the polyimide substrate. It works as an automatically refreshed paper label that offers an intuitive human-to-device interface to improve the efficiency of the offline workers. To conquer the material variations and make use of the long retention time of the printed EC display, its threshold voltage is utilized and a feedback comparator enabling the display driver by the threshold voltage is designed. A System-on-Chip (SoC) is implemented in UMC 0.18 μm CMOS process. According to the experimental results: 1) the IR-UWB transmitter achieves 1.02 V pulse amplitude and 900 ps pulse duration with 18 pJ/pulse energy consumption; 2) the EC display driver automatically refreshes the display when the image fades out, and consumes 1.98 μW per 1 cm 2 display size to retain an image. The UHF/UWB RFID display tag integrated on polyimide substrate is conceptually demonstrated at the end of the paper.

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“…Active RFID systems or Single-hop centralized sensor networks are considered to be a typical and versatile method of implementing this idea [1].…”

Section: Introductionmentioning

confidence: 99%

A 0.18 Um CMOS reconfigurable digital baseband transceiver with 2FSK for RFID

Wei

Zhang

et al. 2012

Anti-Counterfeiting, Security, and Identification

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This paper presents a digital baseband transceiver in 0.18 um CMOS technology. The PHY layer of the baseband supports multi-rate 2FSK modulation and demodulation with fully digital way. The proposed demodulator reaches 10 -4 BER for 14dB SNR and 100Kbps. The 2FSK receiver sensitivity reaches -94dbm when PER is 10 -2 . Using 0.18 um CMOS process, the demodulator occupies an active area of 0.19mm 2 . The MAC layer is compatible with IEEE 802.15.4 protocol. The Protocol layer is processed by the MCU. The digital baseband is a part of SOC, which is multi-channel and multi-mode. And it works at 400 MHz or 2.4 GHz. This chip is mainly applied to short-range wireless communication system such as RFID or WBAN.

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Future RFID and Wireless Sensors for Ubiquitous Intelligence

Cited by 31 publications

References 14 publications

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

A UHF/UWB hybrid silicon RFID tag with on–chip antennas

Interactive UHF/UWB RFID tag for mass customization

A 0.18 Um CMOS reconfigurable digital baseband transceiver with 2FSK for RFID

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