Abstract:
In this paper, an RF energy harvesting system is presented for biomedical implants that use 13.56 MHz RF power transfer. A predictive on/off-time technique for discontinu...Show MoreMetadata
Abstract:
In this paper, an RF energy harvesting system is presented for biomedical implants that use 13.56 MHz RF power transfer. A predictive on/off-time technique for discontinuous conduction mode boost converters is presented to eliminate the need for a zero current detection comparator, which reduces the cost of trimming. Maximum power point tracking is employed to minimize radiated power into the human body. The harvesting system is input-powered and operates with an IQ of 1.1 μA. The boost converter operates at 87.8% efficiency and the system can harvest energy down to an input voltage of 300 mV while charging a battery. The system is simulated and verified in a CMOS 0.25-μm process.
Published in: 2015 IEEE 11th International Conference on ASIC (ASICON)
Date of Conference: 03-06 November 2015
Date Added to IEEE Xplore: 21 July 2016
ISBN Information:
Electronic ISSN: 2162-755X