Design of rectenna for wireless energy harvesting

摘要

the design of rectenna for wireless energy harvesting is presented in this paper. The rectenna design consists of a microstrip patch antenna and a rectifier circuit, in which both of them resonate at 2.45 GHz. CST software was used as the simulation tool of the proposed microstrip patch antenna. Then, the designed antenna was fabricated and assembled together, and tested using network Analyzer. The rectifier consists of two tapered microstrip lines, a Schottky diode, a λ/4 microstrip line, a matching microstrip line, and an output low pass filter. The circuit is printed on the substrate of FR4 (εr = 4.3 and h = 1.6 mm). The circuit was designed and optimized using Advance Design System (ADS), then fabricated using micro-strip lines with an FR4 substrate. According to the received wireless power, the values of output DC voltage and power have been measured and the best value of load resistance to harvest maximum output DC power has been selected through simulation.