Ultrahigh-Data-Rate Communication and Efficient Wireless Power Transfer at 13.56 MHz

Wireless power transfer (WPT) has gained renewed interest due to emerging low-power applications and high efficiency. Coupled with power in many applications is the need for communication, whether for regulation of power transfer or for transfer of information between the source and the load. Several communication methods have been proposed for use with WPT, including adjacent channel communication (non-WPT), as well as WPT-based methods, such as load modulation and passive backscattering. However, approaches using the WPT link have historically been low-speed (<;400 kb/s). In this letter, we report on an ultrahigh data-rate (3.39 Mb/s) communication method that utilizes the WPT link for both power and data transfer, operating at 13.56 MHz, capable of 3.39 Mb/s data transfer with an efficiency reduction of only <;2%.