The Design Challenges of IoT: From System Technologies to Ultra-Low Power Circuits

Wang, Xiaoyan; Barankin, Benjamin; Vandecasteele, M.; Liu, Yao‐Hong; Bachmann, Christian; Philips, Kathleen

doi:10.1587/transele.e100.c.515

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…IoT applications put unprecedented challenges on cost and battery size for IoT sensor nodes [4], in which phase-locked-loop (PLL) synthesizers play a key role in terms of performance as well as power consumption. Within PLL synthesizers, the high-speed divider is a power-hungry block, which transforms a high-frequency input signal into a relatively low one for the following stages.…”

Section: Introductionmentioning

confidence: 99%

A High-Speed Low-Power Divide-by-3/4 Prescaler using E-TSPC Logic DFFs

et al. 2019

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A high-speed, low-power divide-by-3/4 prescaler based on an extended true single-phase clock D-flip flop (E-TSPC DFF) is presented. We added two more transistors and a mode control signal to the conventional E-TSPC based divide-by-4 divider to achieve the function of the divide-by-3/4 dual modulus frequency divider. The designed divide-by-3/4 achieved higher speed and lower power operation with mode control compared with the conventional ones. The prescaler was comprised of sixteen transistors and integrates an inverter in the second DFF to provide output directly. The power consumption was minimized due to the reduced number of stages and transistors. In addition, the prescaler operating speed was also improved due to a reduced critical path. We compared the simulation results with conventional E-TSPC based divide-by-3/4 dividers in the same process, where the figure-of-merit (FoM) of the proposed divider was 17.4–75.5% better than conventional ones. We have also fabricated the prescaler in a 40 nm complementary metal oxide semiconductor (CMOS) process. The measured highest operating frequency was 9 GHz with 0.303 mW power consumption under 1.35 V power supply, which agrees with the simulation well. The measurement results demonstrate that the proposed divider achieves high-speed and low-power operation.

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Section: Introductionmentioning

confidence: 99%

A High-Speed Low-Power Divide-by-3/4 Prescaler using E-TSPC Logic DFFs

et al. 2019

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Underground Infrastructure Management System using Internet of Things Wireless Transmission Technology

Yamaguchi

Fujino

Katsuda

et al. 2018

IEICE Trans. Electron.

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This paper presents a water leakage monitoring system that gathers acoustic data of water pipes using wireless communication technology and identifies the sound of water leakage using machine leaning technology. To collect acoustic data effectively, this system combines three types of data-collection methods: drive-by, walk-by, and static. To design this system, it is important to ascertain the wireless communication distance that can be achieved with sensors installed in a basement. This paper also reports on radio propagation from underground manholes made from reinforced concrete and resin concrete in residential and commercial areas using the 920 MHz band. We reveal that it is possible to design a practical system that uses radio communication from underground sensors.

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An IoT-Based Participatory Antitheft System for Public Safety Enhancement in Smart Cities

et al. 2021

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The risk of theft of goods is certainly an important source of negative influence in human psychology. This article focuses on the development of a scheme that, despite its low cost, acts as a smart antitheft system that achieves small property detection. Specifically, an Internet of Things (IoT)-based participatory platform was developed in order to allow asset-tracking tasks to be crowd-sourced to a community. Stolen objects are traced by using a prototype Bluetooth Low Energy (BLE)-based system, which sends signals, thus becoming a beacon. Once such an item (e.g., a bicycle) is stolen, the owner informs the authorities, which, in turn, broadcast an alert signal to activate the BLE sensor. To trace the asset with the antitheft tag, participants use their GPS-enabled smart phones to scan BLE tags through a specific smartphone client application and report the location of the asset to an operation center so that owners can locate their assets. A stolen item tracking simulator was created to support and optimize the aforementioned tracking process and to produce the best possible outcome, evaluating the impact of different parameters and strategies regarding the selection of how many and which users to activate when searching for a stolen item within a given area.

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The Design Challenges of IoT: From System Technologies to Ultra-Low Power Circuits

Cited by 3 publications

References 3 publications

A High-Speed Low-Power Divide-by-3/4 Prescaler using E-TSPC Logic DFFs

A High-Speed Low-Power Divide-by-3/4 Prescaler using E-TSPC Logic DFFs

Underground Infrastructure Management System using Internet of Things Wireless Transmission Technology

An IoT-Based Participatory Antitheft System for Public Safety Enhancement in Smart Cities

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