A −80dBm BLE-compliant, FSK wake-up receiver with system and within-bit dutycycling for scalable power and latency

Abdelhamid, Mohamed R.; Paidimarri, Arun; Chandrakasan, Anantha P.

doi:10.1109/cicc.2018.8357099

Cited by 22 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…WuR power consumption falls in the µ W domain, but the IoT device often consumes several mW [114], although fractions of mW can be achieved in some cases [28]. Different works have integrated the capabilities of WuR technology into BLE devices [115][116][117]. In [118], a passive RF WuR device for a batteryless WSN is proposed.…”

Section: Rf Eh Antennamentioning

confidence: 99%

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

2022

View full text Add to dashboard Cite

Humanity faces important challenges concerning the optimal use, security, and availability of energy systems, particularly electrical power systems and transmission lines. In this context, data-driven predictive maintenance plans make it possible to increase the safety, stability, reliability, and availability of electrical power systems. In contrast, strategies such as dynamic line rating (DLR) make it possible to optimize the use of power lines. However, these approaches require developing monitoring plans based on acquiring electrical data in real-time using different types of wireless sensors placed in strategic locations. Due to the specific conditions of the transmission lines, e.g., high electric and magnetic fields, this a challenging problem, aggravated by the harsh outdoor environments where power lines are built. Such sensors must also incorporate an energy harvesting (EH) unit that supplies the necessary electronics. Therefore, the EH unit plays a key role, so when designing such electronic systems, care must be taken to select the most suitable EH technology, which is currently evolving rapidly. This work reviews and analyzes the state-of-the-art technology for EH focused on transmission lines, as it is an area with enormous potential for expansion. In addition to recent advances, it also discusses the research needs and challenges that need to be addressed. Despite the importance of this topic, there is still much to investigate, as this area is still in its infancy. Although EH systems for transmission lines are reviewed, many other applications could potentially benefit from introducing wireless sensors with EH capabilities, such as power transformers, distribution switches, or low- and medium-voltage power lines, among others.

show abstract

Section: Rf Eh Antennamentioning

confidence: 99%

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

2022

View full text Add to dashboard Cite

show abstract

“…Specifically, the low harvesting power density combined with the added power consumption of a WuR can worsen the intermittent behaviour of a batteryless device. Other works that have integrated the WuR capabilities in BLE are reported in [ 21 , 26 , 27 ]. These works focused on hardware design aspects of WuR-integration, while our work looks at protocol aspects instead.…”

Section: Related Workmentioning

confidence: 99%

Enabling Low-Latency Bluetooth Low Energy on Energy Harvesting Batteryless Devices Using Wake-Up Radios

Sultania

Delgado

Famaey

2020

Sensors

View full text Add to dashboard Cite

With the growth of the number of IoT devices, the need for changing batteries is becoming cumbersome and has a significant environmental impact. Therefore, batteryless and maintenance-free IoT solutions have emerged, where energy is harvested from the ambient environment. Energy harvesting is relevant mainly for the devices that have a low energy consumption in the range of thousands of micro-watts. Bluetooth Low Energy (BLE) is one of the most popular technologies and is highly suitable for such batteryless energy harvesting devices. Specifically, the BLE friendship feature allows a Low Power Node (LPN) to sleep most of the time. An associated friend node (FN) temporarily stores the LPN’s incoming data packets. The LPN wakes up and polls periodically to its FN retrieving the stored data. Unfortunately, the LPNs typically experience high downlink (DL) latency. To resolve the latency issue, we propose combining the batteryless LPN with a secondary ultra-low-power wake-up radio (WuR), which enables it to always listen for an incoming wake-up signal (WuS). The WuR allows the FN to notify the LPN when new DL data is available by sending a WuS. This removes the need for frequent polling by the LPN, and thus saves the little valuable energy available to the batteryless LPN. In this article, we compare the standard BLE duty-cycle based polling and WuR-based data communication between an FN and a batteryless energy-harvesting LPN. This study allows optimising the LPN configuration (such as capacitor size, polling interval) based on the packet arrival rate, desired packet delivery ratio and DL latency at different harvesting powers. The result shows that WuR-based communication performs best for high harvesting power (400 μW and above) and supports Poisson packet arrival rates as low as 1 s with maximum PDR using a capacitor of 50 mF or more.

show abstract

“…While published optical WuRxs consume less power (<1nW) and are smaller (often single chip with integrated photodiode), their need for a steered laser at long range and their sensitivity to ambient light puts them in a different use case category. Table I compares this paper with selected prior RF/acoustic systems in more detail [5], [9], [24]- [30].…”

Section: B Benchmarkingmentioning

confidence: 99%

Ultrasonic Wake-Up With Precharged Transducers

Rekhi

Arbabian

2019

IEEE J. Solid-State Circuits

View full text Add to dashboard Cite

We present an ultralow-power millimeter-sized ultrasonic wake-up receiver (WuRx) that uses precharged ultrasonic transducers to wirelessly receive wake-up signatures. Our WuRx takes advantage of the low carrier frequency afforded by the low speed of sound to achieve high impedance, and thus high sensitivity, operation in a millimeter-sized form factor. We discuss the system-level considerations that arise from the use of ultrasound as a mode of signature transmission, including the choice of operating frequency and the effect of transducer miniaturization on WuRx sensitivity. We describe the design of the receiver electronics and support our case for ultrasonic wake-up with thorough wireless measurements of error rate and electrical characterization of multiple dice from the same wafer lot. The receiver electronics are fabricated in 65-nm CMOS technology, while the receiver transducer is fabricated by means of a custom in-house process. The receiver achieves a sensitivity of −59.7 dBm at a bit error rate (BER) of 10 −3 with a power consumption of 8 nW and a footprint of 14.5 mm 2 . Our benchmarking shows that the proposed WuRx achieves the lowest system area/aperture of all RF and acoustic WuRxs in the literature (1.45× smaller than the state of the art) while maintaining competitive sensitivity and power consumption.

show abstract

A −80dBm BLE-compliant, FSK wake-up receiver with system and within-bit dutycycling for scalable power and latency

Cited by 22 publications

References 5 publications

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

Energy Harvesting Methods for Transmission Lines: A Comprehensive Review

Enabling Low-Latency Bluetooth Low Energy on Energy Harvesting Batteryless Devices Using Wake-Up Radios

Ultrasonic Wake-Up With Precharged Transducers

Contact Info

Product

Resources

About