Analysis of Off-Resonant Flexible Tertiary Coils in Biomedical Implants for Back Telemetry Detection

S Sarkar, Y Yao, WH Ki, CY Tsui - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
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 …

PRINCE Cipher and eFUSE-based Embedded Encryption System for Optical Nerve Stimulator

S Sarkar, J Jiang, CY Tsui, WH Ki - IEEE Sensors Journal, 2024 - ieeexplore.ieee.org
The use of miniaturized wireless biomedical devices is expanding rapidly. Despite their
limited size, power, processing, and storage capabilities, these devices must maintain a …

Analysis and Prevention of Coupling-Dependent Data Flipping in Wireless Power Transfer Systems

Y Yao, S Sarkar, WH Ki, CY Tsui - IEEE Transactions on Power …, 2023 - ieeexplore.ieee.org
Load shift keying (LSK) is widely used in a wireless power transfer (WPT) system to
backscatter secondary side information to the primary side. However, when the coupling …

Split frequency and load-shift keying based bi-directional data transfer technique in wireless implantable medical devices

S Sarkar, Y Yao, WH Ki - … Conference of the IEEE Engineering in …, 2022 - ieeexplore.ieee.org
The 'power frequency splitting'phenomenon is widely observed over critical coupling
conditions in the wireless power transfer system. Frequency splitting occurs in the voltage …

Mathematical Analysis of Duty Cycle Variation based Wireless Power Control Technique

S Sarkar, Y Yao, WH Ki - 2022 Wireless Power Week (WPW), 2022 - ieeexplore.ieee.org
Class-D power amplifier (PA) is used to drive the primary coil of a wireless power transfer
(WPT) system. The PA is driven by a PWM controller, and the inductor current is computed …