A 400 MHz Voltage-Mode-Based Fully Integrated Regulating Rectifier for Deep Tissue Bio-implants

In this paper, a voltage-mode-based fully integrated resonance regulating rectifier (IR 3 ) running at 400 MHz has been designed for wireless power transfer (WPT) implants in deep tissue. Separate on-&-off delay compensation circuits are designed to avoid reverse current for efficiency and lower...

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Bibliographic Details
Published in2024 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 1 - 5
Main Authors Liu, Guoao, Hu, Yuanqi
Format Conference Proceeding
LanguageEnglish
Published IEEE 19.05.2024
Subjects
Implants
Microwave integrated circuits
mm-sized implant
Power transmission
Rectifiers
regulating rectifier
Regulation
Resonance
Wireless power transfer
wireless power transmission (WPT)
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Summary:In this paper, a voltage-mode-based fully integrated resonance regulating rectifier (IR 3 ) running at 400 MHz has been designed for wireless power transfer (WPT) implants in deep tissue. Separate on-&-off delay compensation circuits are designed to avoid reverse current for efficiency and lower ripple factor, which is about 0.28% at 1.8 V regulated output voltage. With the regulation compensation circuit and the delay compensation scheme, this rectifier can reach a voltage conversion efficiency (VCE) of 1.73 to overcome the low coupling coefficient due to the deep implant, and the whole system achieves a power conversion efficiency (PCE) of 67.8% with 2 mW load.
ISSN:2158-1525
DOI:10.1109/ISCAS58744.2024.10558169