A 433.92-MHz CMOS Rectifier with Dynamic VTH-reduction for Wireless Biomedical Implants

Muhammad Abrar Akram; Sohmyung Ha

doi:10.1109/BioCAS54905.2022.9948576

A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants

Muhammad Abrar Akram
, Sohmyung Ha

New York University Abu Dhabi

New York University Abu Dhabi
New York University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

A full-wave CMOS passive rectifier with an effective threshold voltage (VTH) reduction technique is proposed for wireless-powered biomedical implants. The VTH reduction is achieved by using a dynamically-biased switch and bootstrap capacitors, resulting in a significant increase in the power conversion efficiency (PCE) of the rectifier. The proposed rectifier is designed for an ISM-band frequency of 433.92 MHz and is fabricated together with two conventional bootstrap rectifiers for comparison in a 0.18-μm CMOS process. Measurement results confirm that the proposed rectifier outperforms the conventional bootstrap rectifiers in terms of the output DC voltage level and PCE. The proposed rectifier demonstrates the peak PCE of 68.5% at a load resistor of 3 kΩ at 433.92 MHz.

Original language	English
Title of host publication	BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference
Subtitle of host publication	Intelligent Biomedical Systems for a Better Future, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	16-20
Number of pages	5
ISBN (Electronic)	9781665469173
DOIs	https://doi.org/10.1109/BioCAS54905.2022.9948576
State	Published - 2022
Event	2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022 - Taipei, Taiwan, Province of China Duration: 13 Oct 2022 → 15 Oct 2022

Publication series

Name	BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings

Conference

Conference	2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022
Country/Territory	Taiwan, Province of China
City	Taipei
Period	13/10/22 → 15/10/22

Access to Document

10.1109/BioCAS54905.2022.9948576

Cite this

Akram, M. A., & Ha, S. (2022). A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants. In BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings (pp. 16-20). (BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS54905.2022.9948576

Akram, Muhammad Abrar ; Ha, Sohmyung. / A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants. BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. pp. 16-20 (BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings).

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title = "A 433.92-MHz CMOS Rectifier with Dynamic VTH-reduction for Wireless Biomedical Implants",

abstract = "A full-wave CMOS passive rectifier with an effective threshold voltage (VTH) reduction technique is proposed for wireless-powered biomedical implants. The VTH reduction is achieved by using a dynamically-biased switch and bootstrap capacitors, resulting in a significant increase in the power conversion efficiency (PCE) of the rectifier. The proposed rectifier is designed for an ISM-band frequency of 433.92 MHz and is fabricated together with two conventional bootstrap rectifiers for comparison in a 0.18-μm CMOS process. Measurement results confirm that the proposed rectifier outperforms the conventional bootstrap rectifiers in terms of the output DC voltage level and PCE. The proposed rectifier demonstrates the peak PCE of 68.5\% at a load resistor of 3 kΩ at 433.92 MHz.",

author = "Akram, \{Muhammad Abrar\} and Sohmyung Ha",

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Akram, MA & Ha, S 2022, A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants. in BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings. BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 16-20, 2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022, Taipei, Taiwan, Province of China, 13/10/22. https://doi.org/10.1109/BioCAS54905.2022.9948576

A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants. / Akram, Muhammad Abrar; Ha, Sohmyung.
BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. p. 16-20 (BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - A full-wave CMOS passive rectifier with an effective threshold voltage (VTH) reduction technique is proposed for wireless-powered biomedical implants. The VTH reduction is achieved by using a dynamically-biased switch and bootstrap capacitors, resulting in a significant increase in the power conversion efficiency (PCE) of the rectifier. The proposed rectifier is designed for an ISM-band frequency of 433.92 MHz and is fabricated together with two conventional bootstrap rectifiers for comparison in a 0.18-μm CMOS process. Measurement results confirm that the proposed rectifier outperforms the conventional bootstrap rectifiers in terms of the output DC voltage level and PCE. The proposed rectifier demonstrates the peak PCE of 68.5% at a load resistor of 3 kΩ at 433.92 MHz.

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Akram MA, Ha S. A 433.92-MHz CMOS Rectifier with Dynamic V_TH-reduction for Wireless Biomedical Implants. In BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2022. p. 16-20. (BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings). doi: 10.1109/BioCAS54905.2022.9948576