A Novel Design of Single Branch Wideband Rectifier for Low-Power Application

Abstract

This paper proposes a novel design of single branch wideband rectifier working at low input power level. Both the impedance tuning part and a dual-band matching network are adopted for wideband impedance matching. Theoretical analysis of the proposed wideband rectifier is presented and its closed-form design equations are derived. As an illustrated example, a wideband rectifier is designed and fabricated. Experimental results show that the fabricated rectifier features wide operated fractional bandwidth of more than 50%, low input power level from -5.0 dBm to 5 dBm, as well as a simple circuit structure and design procedure.

Keywords

• wideband
• rectifier
• wireless energy harvesting
• impedance matching