{"title":"分析生物医学植入物中用于背部遥测检测的非共振柔性三级线圈","authors":"Sayan Sarkar;Yuan Yao;Wing-Hung Ki;Chi-Ying Tsui","doi":"10.1109/TCSI.2024.3429297","DOIUrl":null,"url":null,"abstract":"A systematic design technique of flexible tertiary coil in a wireless power transfer (WPT) system for back telemetry detection is presented. The detection (tertiary) coil is co-planar with the primary coil and receives the backscattered load shift keying (LSK) data from the secondary stage. Tertiary coil parameters such as the number of turns, compensation capacitance, and quality factor are determined to maximize the link gain and the end-to-end (E2E) efficiency. The analysis is validated through SPICE simulations and measurements. A novel area-saving inner-tertiary coil is further proposed and critically compared with traditional outer-tertiary coil. The RF electromagnetic radiation or Specific Absorption Rate (SAR) value of the coils was evaluated for possible health hazards using 3D head models and ANSYS/HFSS finite element software. In comparison to a heuristic outer-tertiary coil design, the primary-secondary (operating) distance is improved by 50%, from 12 mm to 18 mm. At an operating distance of 15 mm, the link gain and E2E efficiency are improved by ~207% and ~18%, respectively.","PeriodicalId":13039,"journal":{"name":"IEEE Transactions on Circuits and Systems I: Regular Papers","volume":"71 12","pages":"5931-5943"},"PeriodicalIF":5.2000,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analysis of Off-Resonant Flexible Tertiary Coils in Biomedical Implants for Back Telemetry Detection\",\"authors\":\"Sayan Sarkar;Yuan Yao;Wing-Hung Ki;Chi-Ying Tsui\",\"doi\":\"10.1109/TCSI.2024.3429297\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A systematic design technique of flexible tertiary coil in a wireless power transfer (WPT) system for back telemetry detection is presented. The detection (tertiary) coil is co-planar with the primary coil and receives the backscattered load shift keying (LSK) data from the secondary stage. Tertiary coil parameters such as the number of turns, compensation capacitance, and quality factor are determined to maximize the link gain and the end-to-end (E2E) efficiency. The analysis is validated through SPICE simulations and measurements. A novel area-saving inner-tertiary coil is further proposed and critically compared with traditional outer-tertiary coil. The RF electromagnetic radiation or Specific Absorption Rate (SAR) value of the coils was evaluated for possible health hazards using 3D head models and ANSYS/HFSS finite element software. In comparison to a heuristic outer-tertiary coil design, the primary-secondary (operating) distance is improved by 50%, from 12 mm to 18 mm. At an operating distance of 15 mm, the link gain and E2E efficiency are improved by ~207% and ~18%, respectively.\",\"PeriodicalId\":13039,\"journal\":{\"name\":\"IEEE Transactions on Circuits and Systems I: Regular Papers\",\"volume\":\"71 12\",\"pages\":\"5931-5943\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-07-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Transactions on Circuits and Systems I: Regular Papers\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10607967/\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Circuits and Systems I: Regular Papers","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10607967/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Analysis of Off-Resonant Flexible Tertiary Coils in Biomedical Implants for Back Telemetry Detection
A systematic design technique of flexible tertiary coil in a wireless power transfer (WPT) system for back telemetry detection is presented. The detection (tertiary) coil is co-planar with the primary coil and receives the backscattered load shift keying (LSK) data from the secondary stage. Tertiary coil parameters such as the number of turns, compensation capacitance, and quality factor are determined to maximize the link gain and the end-to-end (E2E) efficiency. The analysis is validated through SPICE simulations and measurements. A novel area-saving inner-tertiary coil is further proposed and critically compared with traditional outer-tertiary coil. The RF electromagnetic radiation or Specific Absorption Rate (SAR) value of the coils was evaluated for possible health hazards using 3D head models and ANSYS/HFSS finite element software. In comparison to a heuristic outer-tertiary coil design, the primary-secondary (operating) distance is improved by 50%, from 12 mm to 18 mm. At an operating distance of 15 mm, the link gain and E2E efficiency are improved by ~207% and ~18%, respectively.
期刊介绍：
TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.
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