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A Battery-Powered Hybrid Resonant Pulse-Train Generator with Adaptive Frequency Tracking and Residual Energy Recycling for Ultrasonic Implants

Conference Paper (2026)
Author(s)

Xiayang Li (Student TU Delft)

Wenyu Peng (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Limitha Kumar (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Xiaoxi Zhao (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Cheng Huang (Iowa State University)

Sijun Du (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Research Group
Electronic Components, Technology and Materials
DOI related publication
https://doi.org/10.1109/ISSCC49663.2026.11409217 Final published version
More Info
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Publication Year
2026
Language
English
Research Group
Electronic Components, Technology and Materials
Pages (from-to)
68-70
Publisher
IEEE
ISBN (electronic)
9798331589363
Event
2026 IEEE International Solid-State Circuits Conference, ISSCC 2026 (2026-02-15 - 2026-02-19), San Francisco, United States
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42
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Abstract

This work presents a battery-powered hybrid resonant pulse-train generator for ultrasonic wireless power transfer (US-WPT) in implantable medical devices. The ASIC integrates adaptive resonance tracking, burst-mode power regulation, a switched-capacitor-resonant architecture, and residual energy harvesting. Fabricated in 0.18μm BCD, it achieves programmable US power, 68.6% Cp-loss reduction, and 21.7% end-to-end efficiency.

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