@inproceedings{fee71a0f51fd418da97e861f000a8407,
title = "An Energy-efficient Wirelessly Powered Millimeter-scale Neurostimulator with Optimized Inductive Loop Antenna and Custom Rectifier",
abstract = "This paper presents a wirelessly powered millimeter-scale neurostimulator based on an integrated circuit (IC) that is co-designed with an inductive loop antenna. The circuit uses a positive feedback to generate output stimuli eliminating the need for any control blocks. Low-voltage and high-voltage versions of the circuit are discussed, which can generate 1 V and 2 V stimulation intensities, respectively. The low-voltage design is implemented in a 180 nm CMOS process and occupies an area of 1 mm x 0.2 mm (including pads). A systematic co-design procedure is presented to optimize the rectifier and the inductive loop antenna, rendering the stimulator assembly to occupy an area of 5 mm x 7.5 mm. The stimulator was fully implanted on a rat sciatic nerve 2 cm under the skin and successfully excited the axons. A multi-receiver energy transfer system is further presented targeting future in-body sensor networks.",
keywords = "implantable medical device, inductive coupling, neurostimulator, rectifier, wireless power transfer",
author = "Hongming Lyu and Jigong Wang and La, {Jun Ho} and Chung, {Jin Mo} and Aydin Babakhani",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
year = "2018",
month = aug,
day = "17",
doi = "10.1109/MWSYM.2018.8439143",
language = "English (US)",
isbn = "9781538650677",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1401--1404",
booktitle = "Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018",
}