2022 Fiscal Year Research-status Report
Coupling Independent metamaterial-based wireless power and data transfer system over a single channel for biomedical applications
| Project/Area Number |
22K14260
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| Research Institution | Kyushu University |
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Principal Investigator |
BARAKAT ADEL 九州大学, システム情報科学研究院, 助教 (20792039)
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| Project Period (FY) |
2022-04-01 – 2025-03-31
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| Keywords | Metamaterial / wireless power transfer / wireless data transfer / Clock and data recovery / Efficienct oscillator / low power consumption |
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| Outline of Annual Research Achievements |
The purpose of this research is the implementation of a metamaterial-assisted wireless power and data transfer (WPDT) system over a single channel to compact biomedical implants. Also, this WPDT system features 1- a free running oscillator to enable dynamic transfer of the power and data without efficiency degradation due to the change in the coupling between the transmiter and receiver, and 2-a clock and data recovery circuit in CMOS technology to recover the data without the need for any clock generation cicuit in the reciever side that add to the compactness as well as the operation under low power conidition.
In this ficial year (FY2022), the design and fabrication of intial prototypes of both free running oscillator and the clock and data recovery has been completed. The obtained results of the clock and data recovery circuit has been submitted to an international conference. Also, the characterization of the free running oscillator is under processing.
Finally, under the topic of metamaterial-asisted wireless power transfer system, an invited lecture has been presented at an international conference. Moreover, a paper has been published on a highly ranked Q1 journal.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
A Part of the planned research for FY2023 has been started at the second half of FY2022 and intial resutls has been obtained and submitted to an international conference. Also, the research resutls of this research have been published in a highly ranked journal and an invited lecture has been presented in an internatioanl conference.
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| Strategy for Future Research Activity |
In FY2023, the obtained results is to be analyized and a paper will be written summarizing them to be submitted to a related journal in biomedical circuit and system.
Also, the clock and data recovery circuit is beeing integrated with the receiver to create the prototype of single channel WPDT system. Then, the obtained results will be summarized and published.
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| Causes of Carryover |
A planned trip to attend a domestic academic society meeting has been delayed to the first half of FY2023. Moreover, due to a change in the schedule of the vendor, CMOS fabrication was delayed to June 2023. Consequnetly, on-wafer probes purshase has been delayed until the chip is fabricated.
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