Harmonic spaced multisines for efficient wireless power transmission

Abstract

In recent years, multisine signals have been used to increase RF-to-DC conversion efficiency in wireless power transmission systems. These signals are characterized to have a high PAPR that allows to excite rectifier diodes more efficiently in low power environments, extending the reading range of a RFID tag with same average radiated power, for example. With this paper we propose a new kind of multisines, a harmonic spaced multisine that achieves unique and interesting time domain properties. Both analytic and experimental results are performed to show the superiority of this signal.