A 0.2-mW 2-Mb/s Digital Transceiver Based on Wideband Signaling for Human Body Communications

Song, Seong-Jun; Cho, Namjun; Yoo, Hoi‐Jun

doi:10.1109/jssc.2007.903080

Cited by 94 publications

(47 citation statements)

References 13 publications

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“…To compensate the low data rate of an IBC transceiver in such a network, a larger array of sensors is required for increased redundancy which leads to increased power consumption at the same time. The low power consumption and high data rate (2.0 Mbps) capacitive coupled IBC transceiver based on wideband signaling (WBS) communication method was introduced in [70].…”

Section: Ibc Transceiver Designmentioning

confidence: 99%

A Novel Intrabody Communication Transceiver for Biomedical Applications

Seyedi

Lai

2017

Series in BioEngineering

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Section: Ibc Transceiver Designmentioning

confidence: 99%

A Novel Intrabody Communication Transceiver for Biomedical Applications

Seyedi

Lai

2017

Series in BioEngineering

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“…The extreme power limitations suggest a trade off between the two modes of communication. The requirement for transmission power with digital baseband pulse communication can be very low, as demonstrated in [22], [56], and [57].…”

Section: Digital Baseband Vs Passband Communicationmentioning

confidence: 99%

“…The low noise front end amplifier constitutes one of the most important building blocks in most of the capacitive BCC communication architectures which have been demonstrated so far in CMOS technologies, e.g., [22], [56], [57], [23], [24], [78], [79], [25], [80], [81] and [82]. It is important to define the right specifications at the system level when designing low noise front end amplifier for capacitive BCC channel because its design influences the entire receiver chain.…”

Section: Design Trade-offs In the Front End Amplifiers For Receivermentioning

confidence: 99%

Variation-Aware System Design Simulation Methodology for Capacitive BCC Transceivers

Kazim

2015

Linköping Studies in Science and Technology. Dissertations

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Capacitive body coupled communication (BCC), frequency range 500 kHz to 15 MHz 1 , is considered an emerging alternate short range wireless technology which can meet the stringent low power consumption (< 1 mW) 2 and low data rate (< 100 kbps) 3 requirements for the next generation of connected devices for applications like internet-of-things (IoT) and wireless sensor network (WSN). But a reliable solution for this mode of communication covering all possible body positions and maximum communication distances around the human body could not be presented so far, despite its inception around 20 years back in 1995. The uncertainties/errors associated with experimental measurement setup create ambiguity about the measured propagation loss or transmission errors. The reason is the usage of either earth grounded lab instruments or the direct coupling of earth ground with transmitter/receiver or the analog front end cut-off frequency limitations in a few MHz region or the balun to provide isolation or the measurements on simplified homogeneous biological phantoms. Another source of ambiguity in the experimental measurements is attributed to the natural variations in human tissue electrophysiological properties from person to person which are also affected by physical factors like age, gender, number of cells at different body locations and humidity. The analytical models presented in the literature are also oversimplified which do not predict the true propagation loss for capacitive BCC channel.An attempt is being made to understand and demonstrate, qualitatively and quantitatively, the physical phenomenon of signal transmission and propagation characteristics e.g., path loss in complex scenarios for capacitive BCC channel by both the experimental observations/measurements and simulation models in this PhD dissertation. An alternate system design simulation methodology has been proposed which estimates the realistic path loss even for longer communication distances > 50 cm for capacitive BCC channel. The proposed simulation methodology allows to vary human tissue dielectric/thickness properties and easily integrates with the circuit simulators as the output is in the form of S-parameters. The advantage is that the capacitive BCC channel characteristics e.g., signal attenuation as a function of different physical factors could be readily simulated at the circuit level to choose appropriate circuit topology and define suitable system specifications. This simulation methodology is based on full-wave electromagnetic analysis and 3D modeling of human body and environment using their conductivity, permittivity, and tangent loss profile to estimate the realistic propagation loss or path loss due to their combined interaction with the electrode coupler for capacitive BCC channel. This methodology estimates the complex path impedance from transmitter to receiver which is important to determine the matching requirements for maximum power transfer. The simulation methodology also contributes towards better understanding of...

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“…It is also used to shape the disturbed signal [3] from sensors for pulse detection or pulse-width signal demodulation application.…”

Section: Introductionmentioning

confidence: 99%

A PVT-independent Schmitt trigger with fully adjustable hysteresis threshold voltages for low-power 1-bit digitization applications

Lin

Wang

Zhang

et al. 2016

IEICE Electron. Express

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This paper proposes a process, voltage, temperature (PVT) independent Schmitt trigger with fully adjustable hysteresis threshold voltages. These characteristics are attributed to the proposition of a self-tuning circuit in the inverter-comparator, along with a feedback controlling network for hysteresis characteristic. The proposed Schmitt trigger is designed and fabricated with SMIC 0.13 µm CMOS technology. It has much less power consumption of only 2.51 µW, and features also an adjustable hysteresis threshold voltages ranging from 350 mV to 850 mV at a minimum supply voltage of 1.0 V. All these advantages make it very suitable to work as 1-bit digitization in a low power sensing node.

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A 0.2-mW 2-Mb/s Digital Transceiver Based on Wideband Signaling for Human Body Communications

Cited by 94 publications

References 13 publications

A Novel Intrabody Communication Transceiver for Biomedical Applications

A Novel Intrabody Communication Transceiver for Biomedical Applications

Variation-Aware System Design Simulation Methodology for Capacitive BCC Transceivers

A PVT-independent Schmitt trigger with fully adjustable hysteresis threshold voltages for low-power 1-bit digitization applications

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