An 11.5 nW broadband wake-up RF receiver with −60 dBm sensitivity at 50 MHz

Nikoofard, Ali; Mandal, Soumyajit

doi:10.1109/iscas.2016.7539171

Cited by 8 publications

(16 citation statements)

References 11 publications

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“…On the other hand, the RFED is one of the architectures with the highest potential for integrability and low-power operation of all the alternatives discussed. A substantial number of WuRs are based on this architecture [ 2 , 6 , 11 , 23 , 24 , 25 , 26 , 27 , 28 ], mainly because it allows the designer to achieve very low-power consumptions. Nevertheless, the RFED architectures are characterized by a high noise figure and low interference resilience when compared to other WuR architectures, thus, achieving a limited sensitivity.…”

Section: Envelope Detector Wur With Off-chip Componentsmentioning

confidence: 99%

“…This requirement is crucial in many application scenarios since the batteries of the sensor nodes are replaceable at a very significant cost because of the harsh environmental conditions. The conventional radio interface or transceiver is frequently the most power-consuming element in a WSN node, dominating both the static and dynamic power consumption of the sensor [ 2 ]. For this reason, various strategies have been explored to minimize the activity of the conventional transceiver, and can result in significant energy savings, thus, increasing the sensor’s battery life.…”

Section: Introductionmentioning

confidence: 99%

“…Some research even shows the implementation of battery-less WuRs by applying energy harvesting techniques to obtain a stable DC-supply from RF signals to feed all the building blocks [ 6 ]. Additionally, the implementation of WuRs with low-power sensors can be used to awake the transceiver and the MCU under certain environmental conditions or the triggering of some particular events [ 2 ]. This can potentially result in a more efficient performance and a reduction of power consumption if the probability of false wake-ups is kept low.…”

Section: Introductionmentioning

confidence: 99%

“…This can potentially result in a more efficient performance and a reduction of power consumption if the probability of false wake-ups is kept low. Envelope detectors formed by conventional rectifiers are commonly used to implement WuRs due to the very low power consumption they allow, since no local oscillators and phase-locked loops are needed [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

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Low-Power RFED Wake-Up Receiver Design for Low-Cost Wireless Sensor Network Applications

Galante-Sempere

Ramos-Valido

Khemchandani

et al. 2020

Sensors

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The development of wake-up receivers (WuR) has recently received a lot of interest from both academia and industry researchers, primarily because of their major impact on the improvement of the performance of wireless sensor networks (WSNs). In this paper, we present the development of three different radiofrequency envelope detection (RFED) based WuRs operating at the 868 MHz industrial, scientific and medical (ISM) band. These circuits can find application in densely populated WSNs, which are fundamental components of Internet-of-Things (IoT) or Internet-of-Everything (IoE) applications. The aim of this work is to provide circuits with high integrability and a low cost-per-node, so as to facilitate the implementation of sensor nodes in low-cost IoT applications. In order to demonstrate the feasibility of implementing a WuR with commercially available off-chip components, the design of an RFED WuR in a PCB mount is presented. The circuit is validated in a real scenario by testing the WuR in a system with a pattern recognizer (AS3933), an MCU (MSP430G2553 from TI), a transceiver (CC1101 from TI) and a T/R switch (ADG918). The WuR has no active components and features a sensitivity of about −50 dBm, with a total size of 22.5 × 51.8 mm2. To facilitate the integration of the WuR in compact systems and low-cost applications, two designs in a commercial UMC 65 nm CMOS process are also explored. Firstly, an RFED WuR with integrated transformer providing a passive voltage gain of 18 dB is demonstrated. The circuit achieves a sensitivity as low as −62 dBm and a power consumption of only 528 nW, with a total area of 634 × 391 μm2. Secondly, so as to reduce the area of the circuit, a design of a tuned-RF WuR with integrated current-reuse active inductor is presented. In this case, the WuR features a sensitivity of −55 dBm with a power consumption of 43.5 μW and a total area of 272 × 464 μm2, obtaining a significant area reduction at the expense of higher power consumption. The alternatives presented show a very low die footprint with a performance in line with most of the state-of-the-art contributions, making the topologies attractive in scenarios where high integrability and low cost-per-node are necessary.

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Section: Envelope Detector Wur With Off-chip Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-Power RFED Wake-Up Receiver Design for Low-Cost Wireless Sensor Network Applications

Galante-Sempere

Ramos-Valido

Khemchandani

et al. 2020

Sensors

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“…Another classification that can be found in the literature [21] takes into account the recipient of the wake-up signal. Accordingly, there are ID-based WuRx characterized by specific address for the communicating object's (node) identification [22], and broadcast wake-up signal based, in which all nodes in neighborhood receive the same wake-up signal.…”

Section: State Of the Artmentioning

confidence: 99%

High Efficiency Rectifier for a Quasi-Passive Wakeup Radio

Fumtchum

Huţu

Tsafack

et al. 2019

2019 International Symposium on Signals, Circuits and Systems (ISSCS)

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The ubiquity of wireless sensor networks (WSN), as well as the rapid development of the Internet of Things (IoT), impel new approaches to reduce the energy consumption of the connected devices. The wake-up radio receivers (WuRx) were born in this context to reduce as much as possible the energy consumption of the radio communication part. This article aims at proposing a lowcost, high-efficiency rectifier to improve a quasi-passive WuRx performance in terms of communication range. By optimizing the wideband matching circuit and the proposed rectifier's load impedance, the sensitivity was increased by 5 dB, corresponding to an increase of the communication range (13 meters in free space). I.

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