Efficient and Simple Structured Five-Band Rectifier for Wireless Power Transfer

An efficient and simple structured five-band rectifier with high frequency ratio is designed in this paper, which adopts only two HSMS-2822 Schottky diode, a simple T-type matching network, class F harmonic control network and DC-pass lowpass filter. The proposed rectifier operates at frequencies of 0.67, 1.31, 2.57, 5.28 and 5.77 GHz. With 29 dBm input power, RF-DC power conversion efficiencies (PCEs) up to 76.3%, 77.1%, 69.9%, 69.1%, 67.3% at 0.67, 1.31, 2.57, 5.28 and 5.77 GHz respectively according to the simulation results. Compared to the traditional multi-band rectifiers, topology of the design shows the advantages of high efficiency, simple structure, and high frequency ratio. This allows rectifier circuits to be widely utilized by wireless power transfer (WPT).