An Intrabody Power Transfer System With Continuous Maximum Resonant Power Tracking

Hyungjoo Cho; Ji Hoon Suh; Gichan Yun; Sohmyung Ha; Minkyu Je

doi:10.1109/LSSC.2023.3265685

An Intrabody Power Transfer System With Continuous Maximum Resonant Power Tracking

Hyungjoo Cho, Ji Hoon Suh, Gichan Yun, Sohmyung Ha, Minkyu Je

Research output: Contribution to journal › Article › peer-review

Abstract

In this letter, we present an intrabody-power-transfer (IBPT) system that delivers power greater than 100μW even across a 150-cm on-body distance. The proposed IBPT TX employs an FLL-based maximum-resonant-power-tracking (MRPT), which runs in the background to maximize the power delivered to the load (PDL). The proposed technique does not require any RX-to-TX back telemetry or searching phase, thus enabling uninterrupted power delivery. The PDL and power transfer efficiency are further improved by inducing parallel resonance at RX. Fabricated in a 180-nm BCD process, the proposed IBPT system achieves 136-μW PDL at 1.8-V dc output with 8.83% end-to-end power efficiency.

Original language	English (US)
Pages (from-to)	105-108
Number of pages	4
Journal	IEEE Solid-State Circuits Letters
Volume	6
DOIs	https://doi.org/10.1109/LSSC.2023.3265685
State	Published - 2023

Keywords

Body-area network (BAN)
body-channel model
energy harvesting (EH)
intrabody power transfer (IBPT)
wearable sensor nodes
whole-body powering

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/LSSC.2023.3265685

Cite this

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title = "An Intrabody Power Transfer System With Continuous Maximum Resonant Power Tracking",

abstract = "In this letter, we present an intrabody-power-transfer (IBPT) system that delivers power greater than 100μW even across a 150-cm on-body distance. The proposed IBPT TX employs an FLL-based maximum-resonant-power-tracking (MRPT), which runs in the background to maximize the power delivered to the load (PDL). The proposed technique does not require any RX-to-TX back telemetry or searching phase, thus enabling uninterrupted power delivery. The PDL and power transfer efficiency are further improved by inducing parallel resonance at RX. Fabricated in a 180-nm BCD process, the proposed IBPT system achieves 136-μW PDL at 1.8-V dc output with 8.83% end-to-end power efficiency.",

keywords = "Body-area network (BAN), body-channel model, energy harvesting (EH), intrabody power transfer (IBPT), wearable sensor nodes, whole-body powering",

author = "Hyungjoo Cho and Suh, {Ji Hoon} and Gichan Yun and Sohmyung Ha and Minkyu Je",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.",

year = "2023",

doi = "10.1109/LSSC.2023.3265685",

language = "English (US)",

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journal = "IEEE Solid-State Circuits Letters",

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T1 - An Intrabody Power Transfer System With Continuous Maximum Resonant Power Tracking

AU - Cho, Hyungjoo

AU - Suh, Ji Hoon

AU - Yun, Gichan

AU - Ha, Sohmyung

AU - Je, Minkyu

PY - 2023

Y1 - 2023

N2 - In this letter, we present an intrabody-power-transfer (IBPT) system that delivers power greater than 100μW even across a 150-cm on-body distance. The proposed IBPT TX employs an FLL-based maximum-resonant-power-tracking (MRPT), which runs in the background to maximize the power delivered to the load (PDL). The proposed technique does not require any RX-to-TX back telemetry or searching phase, thus enabling uninterrupted power delivery. The PDL and power transfer efficiency are further improved by inducing parallel resonance at RX. Fabricated in a 180-nm BCD process, the proposed IBPT system achieves 136-μW PDL at 1.8-V dc output with 8.83% end-to-end power efficiency.

AB - In this letter, we present an intrabody-power-transfer (IBPT) system that delivers power greater than 100μW even across a 150-cm on-body distance. The proposed IBPT TX employs an FLL-based maximum-resonant-power-tracking (MRPT), which runs in the background to maximize the power delivered to the load (PDL). The proposed technique does not require any RX-to-TX back telemetry or searching phase, thus enabling uninterrupted power delivery. The PDL and power transfer efficiency are further improved by inducing parallel resonance at RX. Fabricated in a 180-nm BCD process, the proposed IBPT system achieves 136-μW PDL at 1.8-V dc output with 8.83% end-to-end power efficiency.

KW - Body-area network (BAN)

KW - body-channel model

KW - energy harvesting (EH)

KW - intrabody power transfer (IBPT)

KW - wearable sensor nodes

KW - whole-body powering

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JO - IEEE Solid-State Circuits Letters

JF - IEEE Solid-State Circuits Letters

ER -

An Intrabody Power Transfer System With Continuous Maximum Resonant Power Tracking

Abstract

Keywords

ASJC Scopus subject areas

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