Co-Design Method and Wafer-Level Packaging Technique of Thin-Film Flexible Antenna and Silicon CMOS Rectifier Chips for Wireless-Powered Neural Interface Systems
| Autor: | Horagodage Prabhath Jeewan, Takeshi Kawano, Kenji Okabe, Ippei Akita, Makoto Ishida, Shota Yamagiwa |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Engineering
Silicon Neural Prostheses Surface Properties rectenna Prosthesis Design lcsh:Chemical technology Biochemistry Article Analytical Chemistry Rectifier chemistry.chemical_compound wafer-level packaging Parylene wireless power transmission Electronic engineering Hardware_INTEGRATEDCIRCUITS Humans Telemetry lcsh:TP1-1185 Electrical and Electronic Engineering Instrumentation Electronic circuit business.industry Electrical engineering Brain Chip Atomic and Molecular Physics and Optics Rectenna flip-chip bonding flexible substrate CMOS chemistry Semiconductors Antenna (radio) business Wafer-level packaging |
| Zdroj: | Sensors Volume 15 Issue 12 Pages 31821-31832 Sensors, Vol 15, Iss 12, Pp 31821-31832 (2015) Sensors (Basel, Switzerland) Sensors; Volume 15; Issue 12; Pages: 31821-31832 |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s151229885 |
| Popis: | In this paper, a co-design method and a wafer-level packaging technique of a flexible antenna and a CMOS rectifier chip for use in a small-sized implantable system on the brain surface are proposed. The proposed co-design method optimizes the system architecture, and can help avoid the use of external matching components, resulting in the realization of a small-size system. In addition, the technique employed to assemble a silicon large-scale integration (LSI) chip on the very thin parylene film (5 μm) enables the integration of the rectifier circuits and the flexible antenna (rectenna). In the demonstration of wireless power transmission (WPT), the fabricated flexible rectenna achieved a maximum efficiency of 0.497% with a distance of 3 cm between antennas. In addition, WPT with radio waves allows a misalignment of 185% against antenna size, implying that the misalignment has a less effect on the WPT characteristics compared with electromagnetic induction. |
| Databáze: | OpenAIRE |
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