Efficient Low-Power Recovery Circuits for Bio-implanted Micro-Sensors

• Autorzy: Mutashar S. , Hannan M. A.

Warianty tytułu

PL

Sprawny układ odzyskiwania mocy w implantowych mikro-czujnikach

• Języki publikacji: EN

Abstrakty

EN

This paper presents a modified sub-electronic circuit with low-power recovery circuits to be implemented in implanted micro-sensor used to stimulate the human and animals’ nerves and muscles. The system based on ASK modulation techniques operated with 13.56 MHz according to industrial, scientific, medical (ISM). The modulation index is 12.6% to achieve minimum power consumption to avoid the tissue heating. The system consists of external part with modified class-E power amplifier efficiency 87.2%, and internal part consists of a voltage doubling rectifier with selfthreshold cancellation and efficient low-dropout voltage regulator based on series NMOST transistor using 0.35 μm technology to offer very stable 1.8 DC V. The produced voltage used to power the sub-electronic implanted device with steady voltage even in any changing with the implanted load resistance. The mathematical model is given. The design is simulated using OrCAD PSpice 16.2 software tools and for real-time simulation, the electronic workbench MULISIM 11 has been used to simulate the class-E power amplifier.

PL

W artykule przedstawiono zmodyfikowany układ pół-elektroniczny do zastosowania w implantowych mikro-czujnikach stymulujących pracę ludzkich i zwierzęcych nerwów i mięśni. Urządzenie posiada obwód odzyskiwania mocy w przypadku obniżonego zasilania w układzie. W proponowanym rozwiązaniu zastosowano modulację ASK o częstotliwości 13.56MHz i indeksie 12.6% w celu minimalizacji zużycia energii. Przedstawiono także model matematyczny urządzenia. Badania symulacyjne przeprowadzono w środowisku OrCAD PSpice 16.2 oraz MULISIM 11 do symulacji w czasie rzeczywistym wzmacniacza mocy klasy E.

Słowa kluczowe

EN

ASK modulation; class E amplifier; rectifier; voltage regulator

PL

modulacja ASK; wzmacniacz klasy E; prostownik; regulator napięcia

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 5
• Strony: 15--18
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Mutashar S.

• Department of Electrical, Electronic & Systems Engineering, University Kebangsaan Malaysia

autor

Hannan M. A.

• Department of Electrical, Electronic & Systems Engineering, University Kebangsaan Malaysia

Bibliografia

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