An offset-enhanced active rectifier with delay compensated active diodes for wirelessly powered biomedical implants

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electronics Letters Pub Date : 2024-07-29 DOI:10.1049/ell2.13274

Mohammad Javad Karimi, Catherine Dehollain, Alexandre Schmid

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引用次数: 0

Abstract

This letter presents the design of a 13.56 MHz offset-enhanced full-wave active rectifier, tailored for wirelessly powered biomedical implants. The design incorporates digitally assisted, delay-compensated active diodes and symmetrical bulk biasing in the rectifier core to enhance conduction time, thus improving the voltage conversion ratio (VCR) and power conversion efficiency (PCE). A delay improvement is achieved both in no-load and high-load conditions through an additional comparison path with an offset voltage that is higher than zero. The proposed rectifier is implemented and fabricated in a 180 nm CMOS technology with an area of 0.024 ${mm}^{2}$ . The rectifier, tested and measured with inductive links, offers a maximum VCR of 96.4% and a maximum PCE of 89%.

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带延迟补偿有源二极管的偏移增强型有源整流器，用于无线供电的生物医学植入物

这封信介绍了专为无线供电生物医学植入物设计的 13.56 MHz 偏移增强型全波有源整流器。该设计在整流器内核中加入了数字辅助、延迟补偿有源二极管和对称散装偏压，以延长传导时间，从而提高电压转换率（VCR）和功率转换效率（PCE）。通过一个偏移电压高于零的附加比较路径，在空载和高负载条件下都实现了延迟改善。所提出的整流器采用 180 纳米 CMOS 技术实现和制造，面积为 0.024 mm 2 $\text{mm}^{\text{2}}$。整流器经电感链接测试和测量，最大 VCR 为 96.4%，最大 PCE 为 89%。

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来源期刊

Electronics Letters 工程技术-工程：电子与电气

CiteScore

2.70

自引率

0.00%

发文量

268

审稿时长

3.6 months

期刊介绍： Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews. Scope As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below. Antennas and Propagation Biomedical and Bioinspired Technologies, Signal Processing and Applications Control Engineering Electromagnetism: Theory, Materials and Devices Electronic Circuits and Systems Image, Video and Vision Processing and Applications Information, Computing and Communications Instrumentation and Measurement Microwave Technology Optical Communications Photonics and Opto-Electronics Power Electronics, Energy and Sustainability Radar, Sonar and Navigation Semiconductor Technology Signal Processing MIMO