Development of bio-implanted micro-system with self-recovery ask demodulator for transcutaneous applications

Saad Mutashar, Hannan M A, Salina Abdul Samad, Aini Hussain

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper deals with the development of bio-implanted micro-system with low-power and high data rate based on amplitude shift keying (ASK) modulation technique to stimulate nerves and muscles. The modified system is operated by a low-frequency band 13.56 MHz according to the industrial-scientific-medical (ISM) bands to avoid the biological tissue damage. The data rate on the demodulator side is from 1 Mb/s and up to 1.5 Mb/s depending of generating binary signal (TBIT = 1 μs or 0.5 μs) with modulation index of 13% and modulation rate 7.3%, 9% and 11%, respectively. The proposed inductive coupling link achieves 73% of link efficiency. The modified rectifier with self-threshold voltage cancellation techniques and voltage regulator without thermal protection circuit and without passive elements occupies small area that is modified to generate adequate and stable DC voltages of 1.8 V. A new ASK demodulator structure based on two comparators is developed to extract a synchronized demodulated signal with minimum error. Thereby no need for clock recovery circuit and delay-locked loops (DLL) circuits for data synchronization at 1 Mb/s and 1.250 Mb/s of speed. The system designed using OrCAD Pspice 16.2 is based on 0.35 μm technologies.

Original languageEnglish
Article number1450062
JournalJournal of Mechanics in Medicine and Biology
Volume14
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

Demodulators
Modulation
Recovery
Networks (circuits)
Voltage regulators
Threshold voltage
Frequency bands
Muscle
Clocks
Synchronization
Tissue
Electric potential
Amplitude shift keying

Keywords

  • ASK modulation
  • bio-implanted devices
  • class-E power amplifier
  • inductive powering
  • low frequency ISM band
  • voltage regulator

ASJC Scopus subject areas

  • Biomedical Engineering

Cite this

@article{de30769f791c479f928672adae1d790f,
title = "Development of bio-implanted micro-system with self-recovery ask demodulator for transcutaneous applications",
abstract = "This paper deals with the development of bio-implanted micro-system with low-power and high data rate based on amplitude shift keying (ASK) modulation technique to stimulate nerves and muscles. The modified system is operated by a low-frequency band 13.56 MHz according to the industrial-scientific-medical (ISM) bands to avoid the biological tissue damage. The data rate on the demodulator side is from 1 Mb/s and up to 1.5 Mb/s depending of generating binary signal (TBIT = 1 μs or 0.5 μs) with modulation index of 13{\%} and modulation rate 7.3{\%}, 9{\%} and 11{\%}, respectively. The proposed inductive coupling link achieves 73{\%} of link efficiency. The modified rectifier with self-threshold voltage cancellation techniques and voltage regulator without thermal protection circuit and without passive elements occupies small area that is modified to generate adequate and stable DC voltages of 1.8 V. A new ASK demodulator structure based on two comparators is developed to extract a synchronized demodulated signal with minimum error. Thereby no need for clock recovery circuit and delay-locked loops (DLL) circuits for data synchronization at 1 Mb/s and 1.250 Mb/s of speed. The system designed using OrCAD Pspice 16.2 is based on 0.35 μm technologies.",
keywords = "ASK modulation, bio-implanted devices, class-E power amplifier, inductive powering, low frequency ISM band, voltage regulator",
author = "Saad Mutashar and {M A}, Hannan and {Abdul Samad}, Salina and Aini Hussain",
year = "2014",
doi = "10.1142/S0219519414500626",
language = "English",
volume = "14",
journal = "Journal of Mechanics in Medicine and Biology",
issn = "0219-5194",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "4",

}

TY - JOUR

T1 - Development of bio-implanted micro-system with self-recovery ask demodulator for transcutaneous applications

AU - Mutashar, Saad

AU - M A, Hannan

AU - Abdul Samad, Salina

AU - Hussain, Aini

PY - 2014

Y1 - 2014

N2 - This paper deals with the development of bio-implanted micro-system with low-power and high data rate based on amplitude shift keying (ASK) modulation technique to stimulate nerves and muscles. The modified system is operated by a low-frequency band 13.56 MHz according to the industrial-scientific-medical (ISM) bands to avoid the biological tissue damage. The data rate on the demodulator side is from 1 Mb/s and up to 1.5 Mb/s depending of generating binary signal (TBIT = 1 μs or 0.5 μs) with modulation index of 13% and modulation rate 7.3%, 9% and 11%, respectively. The proposed inductive coupling link achieves 73% of link efficiency. The modified rectifier with self-threshold voltage cancellation techniques and voltage regulator without thermal protection circuit and without passive elements occupies small area that is modified to generate adequate and stable DC voltages of 1.8 V. A new ASK demodulator structure based on two comparators is developed to extract a synchronized demodulated signal with minimum error. Thereby no need for clock recovery circuit and delay-locked loops (DLL) circuits for data synchronization at 1 Mb/s and 1.250 Mb/s of speed. The system designed using OrCAD Pspice 16.2 is based on 0.35 μm technologies.

AB - This paper deals with the development of bio-implanted micro-system with low-power and high data rate based on amplitude shift keying (ASK) modulation technique to stimulate nerves and muscles. The modified system is operated by a low-frequency band 13.56 MHz according to the industrial-scientific-medical (ISM) bands to avoid the biological tissue damage. The data rate on the demodulator side is from 1 Mb/s and up to 1.5 Mb/s depending of generating binary signal (TBIT = 1 μs or 0.5 μs) with modulation index of 13% and modulation rate 7.3%, 9% and 11%, respectively. The proposed inductive coupling link achieves 73% of link efficiency. The modified rectifier with self-threshold voltage cancellation techniques and voltage regulator without thermal protection circuit and without passive elements occupies small area that is modified to generate adequate and stable DC voltages of 1.8 V. A new ASK demodulator structure based on two comparators is developed to extract a synchronized demodulated signal with minimum error. Thereby no need for clock recovery circuit and delay-locked loops (DLL) circuits for data synchronization at 1 Mb/s and 1.250 Mb/s of speed. The system designed using OrCAD Pspice 16.2 is based on 0.35 μm technologies.

KW - ASK modulation

KW - bio-implanted devices

KW - class-E power amplifier

KW - inductive powering

KW - low frequency ISM band

KW - voltage regulator

UR - http://www.scopus.com/inward/record.url?scp=84904040380&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904040380&partnerID=8YFLogxK

U2 - 10.1142/S0219519414500626

DO - 10.1142/S0219519414500626

M3 - Article

AN - SCOPUS:84904040380

VL - 14

JO - Journal of Mechanics in Medicine and Biology

JF - Journal of Mechanics in Medicine and Biology

SN - 0219-5194

IS - 4

M1 - 1450062

ER -