A High-Efficiency Rectifier with BPSK Modulation Wave for Simultaneous Wireless Information and Power Transmission

This paper studies the rectifier for binary phase shift keying (BPSK) modulation wave for simultaneous wireless information and power transmission (SWIPT). Firstly, the theoretical analysis of BPSK signal rectification is carried out from the waveform expression. It is concluded analytically that the rectifying efficiency would increase as the phase interval of BPSK signal becomes smaller. Secondly, the rectifier with a double-branch matching network for BPSK signal is designed using ADS software. With the input power of 12.8dBm and the load resistance of 600$\Omega$, the maximum rectifying efficiencies at 5.8GHz are S1.2% and 7S.6% for continuous wave (CW) and BPSK signal, respectively. The simulation results validate the theoretical conclusion.