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https://doi.org/10.1038/s41467-021-23181-1
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dc.title | Electrically connected spin-torque oscillators array for 2.4 GHz WiFi band transmission and energy harvesting | |
dc.contributor.author | Sharma, Raghav | |
dc.contributor.author | Mishra, Rahul | |
dc.contributor.author | Ngo, Tung | |
dc.contributor.author | Guo, Yong-Xin | |
dc.contributor.author | Fukami, Shunsuke | |
dc.contributor.author | Sato, Hideo | |
dc.contributor.author | Ohno, Hideo | |
dc.contributor.author | Yang, Hyunsoo | |
dc.date.accessioned | 2022-10-13T01:07:50Z | |
dc.date.available | 2022-10-13T01:07:50Z | |
dc.date.issued | 2021-05-18 | |
dc.identifier.citation | Sharma, 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.issn | 2041-1723 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/232744 | |
dc.description.abstract | The 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.publisher | Nature Research | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Scopus OA2021 | |
dc.type | Article | |
dc.contributor.department | ELECTRICAL AND COMPUTER ENGINEERING | |
dc.contributor.department | COLLEGE OF DESIGN AND ENGINEERING | |
dc.description.doi | 10.1038/s41467-021-23181-1 | |
dc.description.sourcetitle | Nature Communications | |
dc.description.volume | 12 | |
dc.description.issue | 1 | |
dc.description.page | 2924 | |
Appears in Collections: | Elements Staff Publications |
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