A 28&amp;#x00B5;W sub-sampling based wake-up receiver with &amp;#x2212;70dBm sensitivity for 915MHz ISM band applications

Moazzeni, Shahaboddin; Cowan, Glenn

doi:10.1109/iscas.2012.6271891

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…The WUR solutions are based on variety of different receiver architectures [7]: matched filter [11], radio frequency envelope detection (RFED) [12][13][14][15][16][17][18][19][20][21], uncertain intermediate frequency (U-IF) [22,23], sub-sampling [24,25], superregenerative oscillator (SRO) [8,9,26], and injection locking [27−29]. The design involves many tradeoffs; therefore, it is not straightforward to define, which architecture is best suited for a WUR.…”

Section: Related Work Of Wake-up Receiversmentioning

confidence: 99%

On the human body communications: wake-up receiver design and channel characterization

Petäjäjärvi

Mikhaylov

Vuohtoniemi

et al. 2016

J Wireless Com Network

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By modulating the electric field induced to a human body, it is possible to transfer data wirelessly using the body as a transmission medium. This method is referred to as human body communication (HBC), which has multiple advantages in comparison with the traditional radio frequency (RF) communication. First, it alleviates the traffic load from the radio channels, which are becoming more and more congested, as the number of connected wireless devices increases rapidly. Second, HBC can potentially provide higher security than traditional RF communication since the electric field stays in the vicinity of a human body, which makes eavesdropping more challenging. Third, the attenuation in the HBC frequency band is lower than in bands used by the other radio technologies for wireless body area networks. To improve energy efficiency in HBC, one approach is to utilize a wake-up receiver (WUR). The WUR is continuously listening for a pre-defined wake-up signal, which activates the other electric circuitry (e.g., sensing, processing, and communication). The use of WURs can significantly reduce the energy consumption and increase the lifetime of the sensing applications. In this work, we propose a superregenerative WUR solution which employs self-quenching and loose synchronization method and operating at sufficiently low (1.25 kbps) data rate in order to obtain high sensitivity while keeping the energy consumption low. This enables to achieve sensitivity of −97 dBm for 10 −3 bit error rate while consuming only 40 μW. The details of the design and the performance evaluation results of the proposed solution are in the paper. Also, the paper reports the results of the practical measurements characterizing the impact of the electrode location on the path loss in an HBC channel. The presented results show that the proposed system can potentially enable communication between two any points on the body with low transmit power.

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Section: Related Work Of Wake-up Receiversmentioning

confidence: 99%

On the human body communications: wake-up receiver design and channel characterization

Petäjäjärvi

Mikhaylov

Vuohtoniemi

et al. 2016

J Wireless Com Network

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“…The WUR introduced in [23] combines U-IF and subsampling structures. Sub-sampling is used to down convert the RF signal omitting the need for a mixer and a LO operating at high frequency.…”

Section: Uncertain Intermediate Frequencymentioning

confidence: 99%

WBAN Energy Efficiency and Dependability Improvement Utilizing Wake-Up Receiver

Petäjäjärvi

Karvonen

Mikhaylov

et al. 2015

IEICE Trans. Commun.

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SUMMARYThis paper discusses the perspectives of using a wake-up receiver (WUR) in wireless body area network (WBAN) applications with event-driven data transfers. First we compare energy efficiency between the WUR-based and the duty-cycled medium access control protocolbased IEEE 802.15.6 compliant WBAN. Then, we review the architectures of state-of-the-art WURs and discuss their suitability for WBANs. The presented results clearly show that the radio frequency envelope detection based architecture features the lowest power consumption at a cost of sensitivity. The other architectures are capable of providing better sensitivity, but consume more power. Finally, we propose the design modification that enables using a WUR to receive the control commands beside the wake-up signals. The presented results reveal that use of this feature does not require complex modifications of the current architectures, but enables to improve energy efficiency and latency for small data blocks transfers.

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“…It achieves a high sensitivity but is power-hungry. The subsampling-based receivers in [9]- [10] use a precise reference frequency lower than one-tenth of the targeted RF to reduce local oscillator (LO) power dissipation. The primary power consumption comes from the low-noise amplifiers (LNAs) that are used to suppress the noise effects at the following blocks, which enhances sensitivity.…”

Section: Introductionmentioning

confidence: 99%

A 0.8V, 152 μW, 433 MHz Mixer-First Receiver with a Self-Adjusted Frequency Tracking Loop

Chen

Liao

2021

IEEE Access

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This paper presents a 433 MHz low-power receiver utilizing an N-path filter technique and a self-frequency tracking mechanism. Without the front-end amplifier, the mixer-first architecture can reduce power consumption significantly. A self-adjusted frequency tracking loop (SA-FTL) adjusts local oscillator (LO) frequency to approach input RF frequency automatically, thereby enhancing conversion gain and lowering return loss. The receiver, implemented in a 0.18 μm CMOS process, achieves a sensitivity of −80 dBm at a bit error rate (BER) of 10 −3 and a data rate of 10 kb/s, while consuming 152 µW from a 0.8V voltage supply.

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A 28µW sub-sampling based wake-up receiver with −70dBm sensitivity for 915MHz ISM band applications

Cited by 5 publications

References 9 publications

On the human body communications: wake-up receiver design and channel characterization

On the human body communications: wake-up receiver design and channel characterization

WBAN Energy Efficiency and Dependability Improvement Utilizing Wake-Up Receiver

A 0.8V, 152 μW, 433 MHz Mixer-First Receiver with a Self-Adjusted Frequency Tracking Loop

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