High efficiency driver for transcutaneously coupled coils

  title={High efficiency driver for transcutaneously coupled coils},
  author={Martin A. K. Schwan and Philip R. Troyk},
  journal={Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society,},
  pages={1403-1404 vol.5}
  • M. Schwan, P. Troyk
  • Published 9 November 1989
  • Physics, Engineering
  • Images of the Twenty-First Century. Proceedings of the Annual International Engineering in Medicine and Biology Society,
A simple, highly efficient class-E driver circuit suitable for powering implantable electronic devices is described. Such a driver allows the design of displacement-tolerant coils. The design for a driver operating at 120 kHz is given. Through successive adjustments in frequency and duty cycle the largest current transfer ratio of peak AC current in the transmitter coil (L2) to the input DC current was obtained. The frequency of operation was 122.7 kHz with a duty cycle of 0.18. The DC input… 

Figures from this paper

Modeling and practical evaluation of a class-E amplifier with a three-coil inductive link
This paper presents the state-space modeling of a system consisting of a class-E amplifier and an inductive link with three coils, featuring a reading unit and a sensor unit. From the developed
Inductive link design for medical implants
This paper describes design principles to design and develop a transcutaneous link for medical implants using inductively coupled coils. Parameters which optimize link efficiency have been discussed
Development of a biotelemetry system with a microcontrolled sensing unit
The development of a biotelemetry system comprising a microcontrolled sensing unit and a reading unit, which showed that the sensing unit operates at a coupling distance of up to 21 mm between the sensing and reading unit coils for a 9600 bps data communication rate, whereas the maximum achieved data rate was 38400 kbps.
Aplicação de um modulador PPSK em um sistema de biotelemetria com enlace indutivo de três bobinas
ZANONI, Luian Halisson. APPLICATION OF A PPSK MODULATOR IN A BIOTELEMETRY SYSTEM WITH A THREE-COIL INDUCTIVE LINK. 110 f. Programa de Pós-Graduação em Engenharia Elétrica, Universidade Tecnológica


Exact analysis of class E tuned power amplifier at any Q and switch duty cycle
An exact analysis of the Class E amplifier at any Q and any switch duty cycle D, where all parameters of the amplifier are functions of Q, and shows excellent agreement with the design calculations.
Advantages of Class E are unusually high efficiency, a priori designability, large reduction in second-breakdown stress, low sensitivity to active-device characteristics, and potential for high-efficiency operation at higher frequencies than previously published Class-D circuits.
Radio-Frequency Coils in Implantable Devices: Misalignment Analysis and Design Procedure
A detailed theoretical analysis of misalignment effects in RF coil systems, including lateral and angular misalignments, is presented.
A Wide-Band Efficient Inductive Transdennal Power and Data Link with Coupling Insensitive Gain
A new method of desensitizing the gain of an inductive link to the mutual coupling of its inductors when the coupling varies due to geometrical misalignments is described.
o k a l , " C l a s s E switching-mode RF power a m p l i f i e r s
  • N o
  • 1980