An 8.3 nW −72 dBm event driven IoE wake up receiver RF front end

Moody, Jesse; Bassirian, Pouyan; Roy, Abhishek; Feng, Yukang; Li, Shuo; Costanzo, Robert; Barker, N. Scott; Calhoun, Benton H.; Bowers, Steven M.

doi:10.23919/eumic.2017.8230664

Cited by 18 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The majority of proposed WuRs in the literature leverage microcontrollers or digital correlators as their address decoders, as per [25,51,52], and these modules consume a considerable portion of the total power in lengthy addresses used in local and wide-area deployments. The authors in [53] have utilized an off-chip lumped element matching network for the wake-up receiver. The study in [51] has utilized PIC12F683 MCU, a 3-volt prototype decoder that consumes 820uW during interception.…”

Section: B the Wur Approachmentioning

confidence: 99%

Ultra-Low-Power IoT Communications: A novel address decoding approach for wake-up receivers

Mafi¹,

Amirhosseini²,

Hosseini³

et al. 2021

Preprint

View full text Add to dashboard Cite

Providing energy-efficient Internet of Things (IoT) connectivity has attracted significant attention in fifth-generation (5G) wireless networks and beyond. A potential solution for realizing a long-lasting network of IoT devices is to equip each IoT device with a wake-up receiver (WuR) to have always-accessible devices instead of always-on devices. WuRs typically comprise a radio frequency demodulator, sequence decoder, and digital address decoder and are provided with a unique authentication address in the network. Although the literature on efficient demodulators is mature, it lacks research on fast, low-power, and reliable address decoders. As this module continuously monitors the received ambient energy for potential paging of the device, its contribution to WuR's power consumption is crucial. Motivated by this need, a low-power, reliable address decoder is developed in this paper. We further investigate the integration of WuR in low-power uplink/downlink communications and, using systemlevel energy analysis; we characterize operation regions in which WuR can contribute significantly to energy saving. The devicelevel energy analysis confirms the superior performance of our decoder. The results show that the proposed decoder significantly outperforms the state-of-the-art with power consumption of 60 nW, at cost of compromising negligible increase in decoding delay.

show abstract

Section: B the Wur Approachmentioning

confidence: 99%

Ultra-Low-Power IoT Communications: A novel address decoding approach for wake-up receivers

Mafi¹,

Amirhosseini²,

Hosseini³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The push for lower average energy consumption for Internet of Things devices enables longer service lives for wireless sensors that can sense and communicate what is happening in the world [1][2][3][4][5]. AlN MEMS resonator and resonant switch technology, as we have presented [6], is a potential path forward for sensitive near-zero average power event-driven wakeup receivers.…”

Section: Introductionmentioning

confidence: 96%

Limitations on MEMS design resulting from random stress gradient variations in sputtered thin films

Zhu¹,

Assylbekova²,

McGruer³

2021

J. Micromech. Microeng.

View full text Add to dashboard Cite

Residual stress gradients often negatively affect the performance of MEMS devices, causing film curvature and changing the designed gaps of released structures. In this work, we built folded beams designed to compensate for the film curvature and keep the actuator gaps of sensitive resonant switches constant. While the average stress gradient is cancelled by our designs, we find that random variations in the stress gradient (rather than random variations in device dimensions) cause the majority of the observed variation in actuator gap. To our knowledge, this has not previously been reported, and represents an important limitation on MEMS designs using sputtered films. The standard deviation of the 400 nm contact gap for a folded beam of total length 152 µm and width 108 µm was measured to be about 134 nm. Using parameters measured from test cantilevers, our simulations predict that about 98% of the variation in contact gap is due to stress gradient variation, rather than variations in device geometry.

show abstract

“…The oscillator is operational from 0.5V and generates two non overlapping clock signals, CLK and CLKB . The oscillator can Figure 5.24: Current starved ring oscillator circuit [12] cover a frequency range from 250Hz to 110kHz operating at V DD = 1V. Utilizing a higher clock rate can reduce the total transmitted energy required for a wake-up, but would increase the clock dc power consumption and degrade the power sensitivity if the detector is not able to fully charge.…”

Section: Ultra Low Power Clock Generatormentioning

confidence: 99%

“…19: (a)Schematic of the ground referenced comparator with controllable decision threshold-voltage, capable of detecting sub-mV baseband signals[12](b) Measured functional waveforms of the comparator subject to a 5mV input RF signal adapted from[67] and consists of a pre-amplifier with one of the inputs referenced to ground and the other input (IN) driven by the rectifier output. A bias current generated by a 4-bit binary-weighted programmable current DAC sets the gain of the pre-amplifier.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Power Management in Ultra-Low Power Systems

Roy¹

Self Cite

View full text Add to dashboard Cite

The evolving vision of the Internet-of-Things (IoT) will revolutionize various applications such as remote health monitoring, home automation and remote surveillance. It has been projected that by 2025, there will be 1 trillion IoT devices influencing our daily lives. This will result in the generation of an enormous amount of data, which will have to be stored, processed and transmitted efficiently and reliably. Although advancements in Integrated Circuit (IC) design and the availability of various Ultra-low Power (ULP) circuit components have helped us to visualize an ecosystem of numerous internet-connected devices, the overall system integration will become a major challenge. A System-on-Chip (SoC), catering to IoT applications is expected to contain many different circuit components such as sensors and Analog-Front-Ends (AFEs) for real-time signal acquisition, analog-to-digital converters, digital signal processors, memories, wireless transceivers etc. All these components have different supply voltage requirements and power profiles. Hence, power delivery to such components in an SoC will play an important role in the overall system architecture. Although, battery-powered systems have traditionally worked well in portable electronics but in an IoT ecosystem, the cost of battery replacement in a trillion-sensor node network will be enormous. In many applications, such as remote surveillance, systems require a long operational lifetime. Moreover, system deployment should be unobtrusive and hence such systems should have small form factors.The above requirements are hard to meet using conventional battery-powered systems. Hence, in most IoT SoCs, there is a strong motivation for an integrated Power Management Unit (PMU), with energy harvesting capability for near-perpetual battery-less operation, which i Abstract ii can provide a range of supply voltage rails to satisfy the electrical specifications of different functional units.This dissertation addresses the design challenges related to energy autonomy and powerdelivery in a wireless sensor node. This work presents an energy harvesting platform in context of a self-powered System-in-Package (SiP) with a capability to harvest from either photovoltaic or thermoelectric generators (TEGs). The SiP consists of an SoC for processing and storage, non-volatile memory, a wireless transceiver and various off-the-shelf sensors. To deliver power and to meet the electrical specifications of these different components of the sensor node, this work presents an efficient, low quiescent power, supply-voltage regulation scheme. In addition to power delivery, this dissertation also demonstrates several ULP digital and mixed-signal circuit components, commonly used in energy-autonomous and always-ON systems such as an event-driven wakeup receiver. This work describes circuit solutions and techniques related to power delivery that will enhance the operational lifetime, reduce the overall form-factor and contribute towards attaining energy-autonomy to facilitate a wide range of a...

show abstract

An 8.3 nW −72 dBm event driven IoE wake up receiver RF front end

Cited by 18 publications

References 4 publications

Ultra-Low-Power IoT Communications: A novel address decoding approach for wake-up receivers

Ultra-Low-Power IoT Communications: A novel address decoding approach for wake-up receivers

Limitations on MEMS design resulting from random stress gradient variations in sputtered thin films

Power Management in Ultra-Low Power Systems

Contact Info

Product

Resources

About