Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-021-23181-1
DC FieldValue
dc.titleElectrically connected spin-torque oscillators array for 2.4 GHz WiFi band transmission and energy harvesting
dc.contributor.authorSharma, Raghav
dc.contributor.authorMishra, Rahul
dc.contributor.authorNgo, Tung
dc.contributor.authorGuo, Yong-Xin
dc.contributor.authorFukami, Shunsuke
dc.contributor.authorSato, Hideo
dc.contributor.authorOhno, Hideo
dc.contributor.authorYang, Hyunsoo
dc.date.accessioned2022-10-13T01:07:50Z
dc.date.available2022-10-13T01:07:50Z
dc.date.issued2021-05-18
dc.identifier.citationSharma, Raghav, Mishra, Rahul, Ngo, Tung, Guo, Yong-Xin, Fukami, Shunsuke, Sato, Hideo, Ohno, Hideo, Yang, Hyunsoo (2021-05-18). Electrically connected spin-torque oscillators array for 2.4 GHz WiFi band transmission and energy harvesting. Nature Communications 12 (1) : 2924. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-021-23181-1
dc.identifier.issn2041-1723
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/232744
dc.description.abstractThe mutual synchronization of spin-torque oscillators (STOs) is critical for communication, energy harvesting and neuromorphic applications. Short range magnetic coupling-based synchronization has spatial restrictions (few µm), whereas the long-range electrical synchronization using vortex STOs has limited frequency responses in hundreds MHz (<500 MHz), restricting them for on-chip GHz-range applications. Here, we demonstrate electrical synchronization of four non-vortex uniformly-magnetized STOs using a single common current source in both parallel and series configurations at 2.4 GHz band, resolving the frequency-area quandary for designing STO based on-chip communication systems. Under injection locking, synchronized STOs demonstrate an excellent time-domain stability and substantially improved phase noise performance. By integrating the electrically connected eight STOs, we demonstrate the battery-free energy-harvesting system by utilizing the wireless radio-frequency energy to power electronic devices such as LEDs. Our results highlight the significance of electrical topology (series vs. parallel) while designing an on-chip STOs system. © 2021, The Author(s).
dc.publisherNature Research
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceScopus OA2021
dc.typeArticle
dc.contributor.departmentELECTRICAL AND COMPUTER ENGINEERING
dc.contributor.departmentCOLLEGE OF DESIGN AND ENGINEERING
dc.description.doi10.1038/s41467-021-23181-1
dc.description.sourcetitleNature Communications
dc.description.volume12
dc.description.issue1
dc.description.page2924
Appears in Collections:Elements
Staff Publications

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_s41467-021-23181-1.pdf2.13 MBAdobe PDF

OPEN

NoneView/Download

Google ScholarTM

Check

Altmetric


This item is licensed under a Creative Commons License Creative Commons