Modeling of Five-Band High efficiency Rectifier for RF Energy Acquisition

As a way of wireless energy collection, radiofrequency energy collection technology is attracting wide attention in academic circles. In the previous research on RF energy collection, many achievements have been made in the 2.4-2.5GHz band. In the field of higher-frequency millimeter waves, there has been corresponding research abroad, but the radiofrequency energy absorption of the millimeter-wave band in China needs to be developed. In the era of the Internet of everything, to obtain RF energy efficiently in the traditional frequency band and the latest 5G band, a five-band rectifier composed of two single series diode rectifiers is designed in this paper. The simulation results show that when the input power level is-20dBm~0dBm, the maximum RF-DC conversion efficiency of the rectifier in 1.9GHz, 3.53GHz, and 4.83GHz is 67%, 63%, 54%, 48%, and 38%, respectively. It makes the rectifier make full use of the radio frequency energy in the space and can be widely used in the future.