@inproceedings{7599275a6ca04555a65b52e1fd36557d,
title = "Wireless transfer of power and data via a single resonant inductive link",
abstract = "A novel circuit design for wireless power and signal transfer using a single resonant inductive link is presented. On the transmitter side, a self-oscillating relay feedback circuit automatically generates a carrier signal near the resonance and drives the transmitter coil. A tunable phase shifter made of two cascaded first-order allpass filters is inserted in the relay feedback loop to modulate the carrier amplitude in accordance with the input signal. On the receiver side, a bridge rectifier and a voltage regulator are used for ACto-DC power conversion, and also a bandpass filter is added to perform amplitude demodulation for extracting the signal from the carrier. The proposed 1.1MHz inductive link has been successfully implemented on a 2.5W wireless speaker. It allows music being played on a speaker without any connection to a power cable and an audio line. The measurement shows that the total harmonic distortion plus noise for a 1kHz sinusoidal signal being transferred can be as low as 1%.",
keywords = "Amplitude modulation, Relay feedback circuit, Resonant inductive link, Wireless power and signal transfer",
author = "Yu, {Shiang Hwua} and Hsieh, {Yi Chen} and Chan, {Chin Wei} and Lo, {I. Fang} and Heri Suryoatmojo and Hwang, {Lih Tyng}",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 69th IEEE Electronic Components and Technology Conference, ECTC 2019 ; Conference date: 28-05-2019 Through 31-05-2019",
year = "2019",
month = may,
doi = "10.1109/ECTC.2019.00268",
language = "English",
series = "Proceedings - Electronic Components and Technology Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1751--1756",
booktitle = "Proceedings - IEEE 69th Electronic Components and Technology Conference, ECTC 2019",
address = "United States",
}