Adaptive Wireless Power Transfer and Backscatter Communication for Perpetual Operation of Wireless Brain–Computer Interfaces

Moore, Gregory E.; Rosenthal, James; Smith, Joshua R.; Reynolds, Matthew S.

doi:10.1109/jproc.2021.3130059

Cited by 7 publications

(4 citation statements)

References 87 publications

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“…The challenge with ultrasonic is the low data rate and limited modulation approach as it is a backscatter-based communication [59]. Radio frequency (RF) backscatter communication module also has sub-milliwatt power consumption for the internal unit, and a data rate can achieve 25 Mb s −1 [5]. Highspeed optical links reported in other works use VCSEL as the transducer [38,40,60] and conventional laser driver circuits to drive the laser diodes.…”

Section: Discussionmentioning

confidence: 99%

“…L e , C e , R e is the inductance, capacitance and resistance components in the Electrostatic discharge (ESD) diode. The impedance of the LED can be calculated as equation (5),…”

Section: Led Module and Impedance Analysis At High Frequencymentioning

confidence: 99%

“…Some independent company, such as Neuralink, is developing systems has more than 1000 channels for human [4]. The demand for a better understanding of neural activities and improving the performance of decoding neural signals have pushed the analog-to-digital converter (ADC) sampling rate to over 30 kHz for each recording channel with 10-16-bit resolution [5]. With those high-performance neural signal sensors, more and more brain-computer interfaces (BCIs) have achieved promising results, such as accurately controlling a robotic arm, moving a computer cursor, and typing at a speed close to handwriting [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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A miniaturized and low-energy subcutaneous optical telemetry module for neurotechnology

Truong

Nikpour

et al. 2023

J. Neural Eng.

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This study presents a proof-of-concept optical telemetry module that leverages a single light-emitting diode (LED) to transmit data at a high bit rate while consuming low power and occupying a minimal area. Our experiments showed that we could achieve 108 Mbit/s and 54 Mbit/s back telemetry data rates for tissue thicknesses of 3 mm and 8 mm, respectively. The proposed module is designed to be powered by near-field coupling and achieve bidirectional communication by low-speed downlink from near-field communication (NFC). It aims to minimize the size of the implant while providing reliable transmission that meets the requirements of high-speed wireless communication from a multi-electrode array neurotechnology implant outside the body. The power consumption of the module is 1.57 mW, including the power consumption of related circuits, resulting in an efficiency of 14.5 pJ/bit, at a tissue thickness of 3 mm and a data rate of 108 Mbit. The use of an optical lens, combined with tissue scattering effect and optimized emission angle, makes the module robust to misalignments of up to ±5 mm and ±15˚ between the implantable and external units. The LED in the implantable unit is only 0.98 x 0.98 x 0.6 mm3, and the testing module is composed of discrete components and laboratory instruments. This work aims to show how it is possible to strike a balance between a small, reliable, and high-bit-rate data uplink between a neural implant and its proximal, wirelessly connected external unit. This optical telemetry module has the potential to be integrated into a significantly miniaturized system through an application-specific integrated circuit (ASIC) and can support up to 1,000 channels of neural recordings, each sampled at 9 kSps with a 12-bit readout resolution.

show abstract

Section: Discussionmentioning

confidence: 99%

“…L e , C e , R e is the inductance, capacitance and resistance components in the Electrostatic discharge (ESD) diode. The impedance of the LED can be calculated as equation (5),…”

Section: Led Module and Impedance Analysis At High Frequencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A miniaturized and low-energy subcutaneous optical telemetry module for neurotechnology

Truong

Nikpour

et al. 2023

J. Neural Eng.

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“…Impedance is crucial in prototyping applications like radio, Bluetooth, and WiFi antennas, where impedance matching circuits are often developed through an iterative process [42]. In such scenarios, minimizing impedance variance at the connection interfaces between components and the PCB during assembly and disassembly is preferable.…”

Section: Impedance Circuit Reproducibilitymentioning

confidence: 99%

SolderlessPCB: Reusing Electronic Components in PCB Prototyping through Detachable 3D Printed Housings

Yan,

Li,

Zhang

et al. 2024

Proceedings of the CHI Conference on Human Factors in Computing Systems

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Intelligent recognition of noun phrases by the integration of Internet of Things and linguistic features

Xiao¹

2023

Int J Syst Assur Eng Manag

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Adaptive Wireless Power Transfer and Backscatter Communication for Perpetual Operation of Wireless Brain–Computer Interfaces

Cited by 7 publications

References 87 publications

A miniaturized and low-energy subcutaneous optical telemetry module for neurotechnology

A miniaturized and low-energy subcutaneous optical telemetry module for neurotechnology

SolderlessPCB: Reusing Electronic Components in PCB Prototyping through Detachable 3D Printed Housings

Intelligent recognition of noun phrases by the integration of Internet of Things and linguistic features

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