A Resonant Current-Mode Wireless Power and Data Receiver for Loosely Coupled Implantable Devices
- Authors
- Hong, Sung-Wan
- Issue Date
- Dec-2020
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Current-mode (CM) receiver; data receiving; energy-shift keying (ESK); power receiving; residual power; voltage stress; wireless power transfer (WPT)
- Citation
- IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.55, no.12, pp 3200 - 3209
- Pages
- 10
- Journal Title
- IEEE JOURNAL OF SOLID-STATE CIRCUITS
- Volume
- 55
- Number
- 12
- Start Page
- 3200
- End Page
- 3209
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/1002
- DOI
- 10.1109/JSSC.2020.3013007
- ISSN
- 0018-9200
1558-173X
- Abstract
- This article proposes a current-mode (CM) receiver for a wireless power transfer (WPT) application that receives both power and data from the transceiver. The proposed CM receiver decreases the voltage stress applied to transistors to store a larger amount of power in its LC tank, and this charges the battery without any residual power. Accordingly, the receiver achieves the highest maximum receiver efficiency of 92.6% among the state-of-the-art CM receivers at an input power of 10.89 mW. The proposed CM receiver receives data along with the power by using energy-shift keying (ESK), which is the proposed data transfer method for the CM receiver. Due to ESK, the receiver achieves a maximum data rate of 100 kb/s while consuming negligible power for receiving the data. A prototype chip fabricated in a 180-nm CMOS process occupied an area of 0.43 mm x 0.49 mm, and a receiver coil was implemented as a printed spiral coil with dimensions of 6 mm x 6 mm.
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