Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants

Virgilio Valente; Clemens Eder; Andreas Demosthenous; Nick Donaldson

doi:10.1109/ICECS.2012.6463708

Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants

Virgilio Valente, Clemens Eder, Andreas Demosthenous, Nick Donaldson

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

6 Citations (Scopus)

Abstract

The efficiency of an inductive power transfer link is greatly affected by misalignment between the coils, caused by the patient's movement, after implantation. In this paper we present the preliminary design of a coupling-insensitive system with an integrated class-D transmitter, suitable for powering epidural stimulation implants. The operation of the system is based on closed-loop modulation of the power delivered to the implant, to compensate for losses of coupling between coils after implantation. An integrated transmitter with efficiencies above 90% was designed to operate between 1 MHz and 14 MHz. The circuit design employs 0.18-um high-voltage CMOS technology. Simulations are presented to verify the operation of the circuit.

Original language	English
Title of host publication	2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012
Pages	29-32
Number of pages	4
DOIs	https://doi.org/10.1109/ICECS.2012.6463708
Publication status	Published - 1 Dec 2012
Externally published	Yes
Event	2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012 - Seville, Seville, Spain Duration: 9 Dec 2012 → 12 Dec 2012

Publication series

Name	2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012

Conference

Conference	2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012
Country	Spain
City	Seville, Seville
Period	9/12/12 → 12/12/12

Access to Document

10.1109/ICECS.2012.6463708

Link to publication in Scopus

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Valente, V., Eder, C., Demosthenous, A., & Donaldson, N. (2012). Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants. In 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012 (pp. 29-32). [6463708] (2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012). https://doi.org/10.1109/ICECS.2012.6463708

Valente, Virgilio ; Eder, Clemens ; Demosthenous, Andreas ; Donaldson, Nick. / Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants. 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012. 2012. pp. 29-32 (2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012).

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abstract = "The efficiency of an inductive power transfer link is greatly affected by misalignment between the coils, caused by the patient's movement, after implantation. In this paper we present the preliminary design of a coupling-insensitive system with an integrated class-D transmitter, suitable for powering epidural stimulation implants. The operation of the system is based on closed-loop modulation of the power delivered to the implant, to compensate for losses of coupling between coils after implantation. An integrated transmitter with efficiencies above 90% was designed to operate between 1 MHz and 14 MHz. The circuit design employs 0.18-um high-voltage CMOS technology. Simulations are presented to verify the operation of the circuit.",

author = "Virgilio Valente and Clemens Eder and Andreas Demosthenous and Nick Donaldson",

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Valente, V, Eder, C, Demosthenous, A & Donaldson, N 2012, Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants. in 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012., 6463708, 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012, pp. 29-32, 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012, Seville, Seville, Spain, 9/12/12. https://doi.org/10.1109/ICECS.2012.6463708

Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants. / Valente, Virgilio; Eder, Clemens; Demosthenous, Andreas; Donaldson, Nick.

2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012. 2012. p. 29-32 6463708 (2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Valente V, Eder C, Demosthenous A, Donaldson N. Towards a closed-loop transmitter system with integrated class-D amplifier for coupling-insensitive powering of implants. In 2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012. 2012. p. 29-32. 6463708. (2012 19th IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2012). https://doi.org/10.1109/ICECS.2012.6463708