Ultra-low-power wireless transmitter for neural prostheses with modified pulse position modulation

Healthcare Technology Letters

article

Farhad Goodarzy¹  Stan E. Skafidas¹ 

[1] Department of Electrical and Electronic Engineering, University of Melbourne;Victoria Research Laboratory, National ICT Australia (NICTA)

关键词: biomedical telemetry;    prosthetics;    neurophysiology;    embedded systems;    pulse modulation;    surgery;    wireless sensor networks;    transmitters;    voltage 1.2 V;    size 130 nm;    power 200 muW;    frequency 402 MHz to 405 MHz;    bit rate 500 kbit/s;    neural embedded systems;    wearable devices;    surgically implanted bionic systems;    single-chip solutions;    circuitry size;    transmitter architecture complexity;    per bit transferred power consumption;    overall transferred power consumption;    saturated amplified signal;    modified pulse position modulation technique;    Medical Implant Communication Service frequency band;    energy efficiency;    embedded bionic systems;    neural prostheses;    ultralow-power wireless transmitter;   

DOI  :  10.1049/htl.2013.0012

学科分类：肠胃与肝脏病学

来源: Wiley

【 摘 要 】

An ultra-low-power wireless transmitter for embedded bionic systems is proposed, which achieves 40 pJ/b energy efficiency and delivers 500 kb/s data using the medical implant communication service frequency band (402–405 MHz). It consumes a measured peak power of 200 µW from a 1.2 V supply while occupying an active area of 0.0016 mm 2 in a 130 nm technology. A modified pulse position modulation technique called saturated amplified signal is proposed and implemented, which can reduce the overall and per bit transferred power consumption of the transmitter while reducing the complexity of the transmitter architectures, and hence potentially shrinking the size of the implemented circuitry. The design is capable of being fully integrated on single-chip solutions for surgically implanted bionic systems, wearable devices and neural embedded systems.

【 授权许可】

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