A 5mW multi-standard Bluetooth LE/IEEE 802.15.6 SoC for WBAN applications

Devita, Gabriele; Wong, Alan; Dawkins, M.; Glaros, Kostas N.; Kiani, U.; Lauria, Franco; Madaka, V.; Omeni, O.; Schiff, Johannes; Vasudevan, A. R.; Whitaker, L.; Yu, Shuai; Burdett, Alison

doi:10.1109/esscirc.2014.6942077

Cited by 15 publications

(7 citation statements)

References 2 publications

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“…At the resonant frequency, the transformer-based tank can be modeled by an equivalent LC-tank of elements L eq , C eq and R in . 5 On the other hand, M 1−4 transistors, together with the passive voltage gain of the transformer, are decomposed into two nonlinear time-variant conductances. The first one is always negative to compensate for the circuit losses: 6…”

Section: Thermal Noise Upconversion In the Proposed Oscillatormentioning

confidence: 99%

“…7. Since M 3−4 transistors work only in weak inversion and saturation during their on-state, short-channel modulation effects should be considered in the G DS4EF calculation in (5). It is well known that g ds4 (φ) = λ • I M 4 (φ), where I M 4 and λ are, respectively, the drain current and channel-length modulation coefficient of M 4 .…”

Section: Appendix Amentioning

confidence: 99%

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A Fully Integrated Bluetooth Low-Energy Transmitter in 28 nm CMOS With 36% System Efficiency at 3 dBm

Babaie

Kuo

Chen

et al. 2016

IEEE J. Solid-State Circuits

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We propose a new transmitter architecture for ultra-low power radios in which the most energy-hungry RF circuits operate at a supply just above a threshold voltage of CMOS transistors. An all-digital PLL employs a digitally controlled oscillator with switching current sources to reduce supply voltage and power without sacrificing its startup margin. It also reduces 1/f noise and supply pushing, thus allowing the ADPLL, after settling, to reduce its sampling rate or shut it off entirely during a direct DCO data modulation. The switching power amplifier integrates its matching network while operating in class-E/F2 to maximally enhance its efficiency at low voltage. The transmitter is realized in 28 nm digital CMOS and satisfies all metal density and other manufacturing rules. It consumes 3.6 mW/5.5 mW while delivering 0 dBm/3 dBm RF power in Bluetooth Low-Energy mode.

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Section: Thermal Noise Upconversion In the Proposed Oscillatormentioning

confidence: 99%

Section: Appendix Amentioning

confidence: 99%

A Fully Integrated Bluetooth Low-Energy Transmitter in 28 nm CMOS With 36% System Efficiency at 3 dBm

Babaie

Kuo

Chen

et al. 2016

IEEE J. Solid-State Circuits

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“…In order to minimize power consumption, our monitor combined a Bluetooth4.0 LE module (DA14580) with an MCU to construct a digital data acquisition system. The average working power of the BLE module is only about 5 mW [ 27 ]. Use the MCU to control the conditioning circuit power supply and acquire the respiration data.…”

Section: System Designmentioning

confidence: 99%

Smart Sensing Strip Using Monolithically Integrated Flexible Flow Sensor for Noninvasively Monitoring Respiratory Flow

Jiang

Zhao

Zhu

2015

Sensors

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This paper presents a smart sensing strip for noninvasively monitoring respiratory flow in real time. The monitoring system comprises a monolithically-integrated flexible hot-film flow sensor adhered on a molded flexible silicone case, where a miniaturized conditioning circuit with a Bluetooth4.0 LE module are packaged, and a personal mobile device that wirelessly acquires respiratory data transmitted from the flow sensor, executes extraction of vital signs, and performs medical diagnosis. The system serves as a wearable device to monitor comprehensive respiratory flow while avoiding use of uncomfortable nasal cannula. The respiratory sensor is a flexible flow sensor monolithically integrating four elements of a Wheatstone bridge on single chip, including a hot-film resistor, a temperature-compensating resistor, and two balancing resistors. The monitor takes merits of small size, light weight, easy operation, and low power consumption. Experiments were conducted to verify the feasibility and effectiveness of monitoring and diagnosing respiratory diseases using the proposed system.

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“…In wearable devices, the radio typically consumes most of the energy [ 2 , 3 ]. In a typical WBAN radio, both transmitter and receiver consume a few mWs [ 2 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. However, while the transmitter is typically operated with a very low duty cycle, since data transmission is operated in bursts, the receiver is continuously operating, and is therefore the element primarily responsible for the average power dissipation [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Design Considerations for a Sub-mW Wireless Medical Body-Area Network Receiver Front End

2018

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Wireless medical body-area networks are used to connect sensor nodes that monitor vital parameters. The radio consumes a large portion of the sensor energy budget, and hence its power dissipation should be minimized. The low-noise amplifier (LNA) is an important component of the receiver, and must guarantee low-noise amplification and impedance matching. In this work, an ultra-low-voltage ultra-low-power LNA is proposed that, thanks to the proposed transformer-based gate boosting technique, has a reduced current consumption of only 160 μA and can operate with a supply as low as 0.18 V. The LNA was designed using 40 nm Complementary Metal-Oxide Semiconductor (CMOS) technology and features a voltage gain of 14 dB, 5.2 dB NF and −8.6 dBm IIP3. This performance is comparable to a prior work by the same authors, but with the minimum supply voltage reduced by a factor of 4x.

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A 5mW multi-standard Bluetooth LE/IEEE 802.15.6 SoC for WBAN applications

Cited by 15 publications

References 2 publications

A Fully Integrated Bluetooth Low-Energy Transmitter in 28 nm CMOS With 36% System Efficiency at 3 dBm

A Fully Integrated Bluetooth Low-Energy Transmitter in 28 nm CMOS With 36% System Efficiency at 3 dBm

Smart Sensing Strip Using Monolithically Integrated Flexible Flow Sensor for Noninvasively Monitoring Respiratory Flow

Design Considerations for a Sub-mW Wireless Medical Body-Area Network Receiver Front End

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