Two-Stage Dickson Charge Pump Rectifier with Harmonics Suppression for 2.45 GHz WPT

Abstract

This paper presents a microwave rectifying circuit design for RF energy harvesting purpose at an operating frequency of 2.45 GHz. The proposed rectifier design is a circuit combination of a 2-Stage Dickson Charge Pump & radial stub filter. Radial stub filter was implemented for maximum power transfer and suppression of second and third order harmonics in the output voltage. Design and simulations were done by utilising Advanced Design System. Proposed circuit was fabricated on FR4 substrate with a maximum efficiency of 59 % on an input power of 5 dBm at a frequency of 2.45 GHz.