A 780–950 MHz, 64–146 µW Power-Scalable Synchronized-Switching OOK Receiver for Wireless Event-Driven Applications

Huang, Xiongchuan; Harpe, Pieter; Dolmans, Guido; Groot, Harmke de; Long, John R.

doi:10.1109/jssc.2014.2307056

Cited by 32 publications

(24 citation statements)

References 22 publications

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“…Concerning CMOS-based chips, publications have introduced prototypes with practically higher sensitivity (Pletcher et al, 2008;Hambeck et al, 2011;Huang et al, 2014) than that of other architectures. In spite of draining a considerably high current, the overall power consumption remains low since they can operate at a very low voltage.…”

Section: Technology Considerationsmentioning

confidence: 99%

“…In spite of draining a considerably high current, the overall power consumption remains low since they can operate at a very low voltage. In Pletcher et al (2008) and Huang et al (2014), the energy consumption is over 50 µW, which is still considered high for most event-triggered WSN applications. Passive envelope detectors based on nonlinear passive components such as Schottky diodes are often used to remain within the power budget.…”

Section: Technology Considerationsmentioning

confidence: 99%

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An 868 MHz 7.5 µW wake-up receiver with −60 dBm sensitivity

Bdiri

Derbel

Kanoun

2016

J. Sens. Sens. Syst.

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Abstract. In wireless sensor networks (WSNs), batteries are unlikely to be replaced or recharged once they get depleted, because of costs and feasibility. In a typical application, sensor nodes should be accessible and able to respond within a defined period of time, especially in real-time applications. However, the idle listening of the radio wastes most of the energy since the radio transceiver is constantly active. On the other hand, putting it into sleep state disconnects the node from the network. To cope with such a challenge, an ultra-low-power radio receiver referred to as a wake-up receiver (WuRx) handles the idle listening while keeping the main radio completely off. A WuRx consumes much less power than the main transceiver and triggers an interrupt only when a packet with a user-defined address is received. Embedding such a device enables better event-triggered applications where real-time behavior is required and a longer lifetime is mandatory. The proposed WuRx features practical sensitivity and includes the minimum number of active components in order to remain within the power budget. In this paper, an ultra-low-power WuRx with a power of 7.5 µW and a sensitivity of −60 dBm is developed. The decoding process of 16 bit of a wake-up packet (WuPt) takes less than 15 ms.

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Section: Technology Considerationsmentioning

confidence: 99%

Section: Technology Considerationsmentioning

confidence: 99%

An 868 MHz 7.5 µW wake-up receiver with −60 dBm sensitivity

Bdiri

Derbel

Kanoun

2016

J. Sens. Sens. Syst.

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“…), interference robustness of ULP receivers (RX) is a challenge in the limited power budget (~100µW) [1]. Several works [2][3][4][5][6][7][8][9] have been published recently for the implementation of ULP receivers. Reference [2] proposes a superheterodyne receiver combined with a low power Local Oscillators (LO).…”

Section: Introductionmentioning

confidence: 99%

“…However, the LO requires an external inductor to achieve good phase noise to avoid reciprocal mixing at low power, while non-linearity and limited RF filtering make it vulnerable to in-band interferers. To reduce the number of external components, Envelope Detector (ED) based receivers are proposed [3][4][5][6][7]. However, their selectivity and linearity are poor if an external high-Q filter is not used.…”

Section: Introductionmentioning

confidence: 99%

“…However, to obtain good sensitivity in such envelope detector based receivers, high gain Low Noise Amplifiers (LNA) are needed. Since these LNAs process the entire frequency band, strong in-band interferers will quickly saturate these LNAs, compressing the signal gain [4][5][6][7][8]. To break the trade-off between power, sensitivity and linearity, while improving the interference robustness, we propose an ULP receiver that uses two techniques: Transmitted-Reference (TR) modulation and Shifted Limiters (SL) [9].…”

Section: Introductionmentioning

confidence: 99%

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A 915 MHz 175 $\mu \text{W}$ Receiver Using Transmitted-Reference and Shifted Limiters for 50 dB In-Band Interference Tolerance

Zee

Nauta

2016

IEEE J. Solid-State Circuits

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-Improving interference robustness in Ultra-Low Power (ULP) receivers is a big challenge due to their low power budget. This paper presents an envelope detector based 915MHz 10kbps ULP receiver, which is fabricated in 65nm CMOS process for Wireless Sensor Networks (WSN) and Internet of Things (IoT). Two power-efficient techniques:Transmitted-Reference and Shifted Limiter, are proposed to improve the interference robustness. The receiver sensitivity is between -61 and -76dBm. The maximum in-band Signal-to-Interference Ratio (SIR) at +/-1MHz offset is up to -50dB while just consuming 175µW power from a 1V supply.

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