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Resonant Microelectromechanical Receiver

This paper reports a practical demonstration of a proposed resonant microelectromechanical receiver for low power wake-up receiver (WuRx) applications. The proposed system is made of three main components: a piezoelectric based acoustic resonator, an electrostatically-driven MEMS resonant demodulato...

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Published in:Journal of microelectromechanical systems 2019-06, Vol.28 (3), p.327-343
Main Authors: Kochhar, Abhay, Galanko, Mary E., Soliman, Mazen, Abdelsalam, Hoda, Colombo, Luca, Lin, Yi-Chung, Vidal-Alvarez, Gabriel, Mukherjee, Tamal, Weldon, Jeffrey, Paramesh, Jeyanandh, Fedder, Gary K., Piazza, Gianluca
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cited_by cdi_FETCH-LOGICAL-c295t-1c3bdcf5c6351636869923450640c8a44e34049aa5d37bd33227761bfc804cda3
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container_issue 3
container_start_page 327
container_title Journal of microelectromechanical systems
container_volume 28
creator Kochhar, Abhay
Galanko, Mary E.
Soliman, Mazen
Abdelsalam, Hoda
Colombo, Luca
Lin, Yi-Chung
Vidal-Alvarez, Gabriel
Mukherjee, Tamal
Weldon, Jeffrey
Paramesh, Jeyanandh
Fedder, Gary K.
Piazza, Gianluca
description This paper reports a practical demonstration of a proposed resonant microelectromechanical receiver for low power wake-up receiver (WuRx) applications. The proposed system is made of three main components: a piezoelectric based acoustic resonator, an electrostatically-driven MEMS resonant demodulator, and a CMOS baseband trigger circuit. The filtering, amplification, and demodulation of the incoming signal are performed through the piezoelectric resonator and the resonant demodulator, ensuring zero power consumption for both the radio frequency (RF) and mixing stages. The only power consumption occurs at baseband by operating the CMOS circuit in deep subthreshold. This system utilizes a lithium niobate piezoelectric resonator possessing a figure of merit of around 650 and achieving voltage gain of 28 dB. A resonant demodulator fabricated in the Epi-Seal MEMS process is utilized to attain a conversion efficiency of 13.8 nA/V 2 . In the trigger circuit, an amplifier with transimpedance >200~\text{M} {\Omega } is utilized to sense the output current from the demodulator. An intermediate buffer and a multiple stage passive latch rectifier are utilized to generate the wake-up signal through a Schmitt trigger. The demonstrated system achieves −40.2 dBm sensitivity for a 44 kHz amplitude-modulated 50 MHz RF signal while consuming 38.75 nW. This architecture is a promising step toward a WuRx capable of achieving higher interference rejection, high sensitivity, and nW range power consumption at a high data rate. [2018-0261]
doi_str_mv 10.1109/JMEMS.2019.2898984
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The proposed system is made of three main components: a piezoelectric based acoustic resonator, an electrostatically-driven MEMS resonant demodulator, and a CMOS baseband trigger circuit. The filtering, amplification, and demodulation of the incoming signal are performed through the piezoelectric resonator and the resonant demodulator, ensuring zero power consumption for both the radio frequency (RF) and mixing stages. The only power consumption occurs at baseband by operating the CMOS circuit in deep subthreshold. This system utilizes a lithium niobate piezoelectric resonator possessing a figure of merit of around 650 and achieving voltage gain of 28 dB. A resonant demodulator fabricated in the Epi-Seal MEMS process is utilized to attain a conversion efficiency of 13.8 nA/V 2 . In the trigger circuit, an amplifier with transimpedance &lt;inline-formula&gt; &lt;tex-math notation="LaTeX"&gt;&gt;200~\text{M} {\Omega } &lt;/tex-math&gt;&lt;/inline-formula&gt; is utilized to sense the output current from the demodulator. An intermediate buffer and a multiple stage passive latch rectifier are utilized to generate the wake-up signal through a Schmitt trigger. The demonstrated system achieves −40.2 dBm sensitivity for a 44 kHz amplitude-modulated 50 MHz RF signal while consuming 38.75 nW. This architecture is a promising step toward a WuRx capable of achieving higher interference rejection, high sensitivity, and nW range power consumption at a high data rate. 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The proposed system is made of three main components: a piezoelectric based acoustic resonator, an electrostatically-driven MEMS resonant demodulator, and a CMOS baseband trigger circuit. The filtering, amplification, and demodulation of the incoming signal are performed through the piezoelectric resonator and the resonant demodulator, ensuring zero power consumption for both the radio frequency (RF) and mixing stages. The only power consumption occurs at baseband by operating the CMOS circuit in deep subthreshold. This system utilizes a lithium niobate piezoelectric resonator possessing a figure of merit of around 650 and achieving voltage gain of 28 dB. A resonant demodulator fabricated in the Epi-Seal MEMS process is utilized to attain a conversion efficiency of 13.8 nA/V 2 . In the trigger circuit, an amplifier with transimpedance &lt;inline-formula&gt; &lt;tex-math notation="LaTeX"&gt;&gt;200~\text{M} {\Omega } &lt;/tex-math&gt;&lt;/inline-formula&gt; is utilized to sense the output current from the demodulator. An intermediate buffer and a multiple stage passive latch rectifier are utilized to generate the wake-up signal through a Schmitt trigger. The demonstrated system achieves −40.2 dBm sensitivity for a 44 kHz amplitude-modulated 50 MHz RF signal while consuming 38.75 nW. This architecture is a promising step toward a WuRx capable of achieving higher interference rejection, high sensitivity, and nW range power consumption at a high data rate. 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The proposed system is made of three main components: a piezoelectric based acoustic resonator, an electrostatically-driven MEMS resonant demodulator, and a CMOS baseband trigger circuit. The filtering, amplification, and demodulation of the incoming signal are performed through the piezoelectric resonator and the resonant demodulator, ensuring zero power consumption for both the radio frequency (RF) and mixing stages. The only power consumption occurs at baseband by operating the CMOS circuit in deep subthreshold. This system utilizes a lithium niobate piezoelectric resonator possessing a figure of merit of around 650 and achieving voltage gain of 28 dB. A resonant demodulator fabricated in the Epi-Seal MEMS process is utilized to attain a conversion efficiency of 13.8 nA/V 2 . In the trigger circuit, an amplifier with transimpedance &lt;inline-formula&gt; &lt;tex-math notation="LaTeX"&gt;&gt;200~\text{M} {\Omega } &lt;/tex-math&gt;&lt;/inline-formula&gt; is utilized to sense the output current from the demodulator. An intermediate buffer and a multiple stage passive latch rectifier are utilized to generate the wake-up signal through a Schmitt trigger. The demonstrated system achieves −40.2 dBm sensitivity for a 44 kHz amplitude-modulated 50 MHz RF signal while consuming 38.75 nW. This architecture is a promising step toward a WuRx capable of achieving higher interference rejection, high sensitivity, and nW range power consumption at a high data rate. 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source IEEE Electronic Library (IEL) Journals
subjects Capacitance
CMOS
Demodulation
epi-seal
Figure of merit
IoT
lithium niobate
Lithium niobates
low power wake-up receiver
MEMS
MEMS demodulator
Micromechanical devices
mixer-filter
passive latch rectifier
piezoelectric resonators
Piezoelectricity
Power consumption
Radio frequency
Receivers
Rectifiers
Resonant frequency
Resonant microelectromechanical receiver
Resonators
RLC circuits
schmitt trigger
Sensitivity
S₀ mode
TIA
Trigger circuits
Voltage gain
Voltage measurement
title Resonant Microelectromechanical Receiver
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