5.9 GHz High Sensitivity Rectenna for Low Power Wireless Transmission Application

Abstract

This paper presents the analysis and the design of a high sensitivity rectenna operating at 5.9 GHz and -5 dBm for microwave power transfer applications. Closed form equations are given to evaluate the output rectifier characteristics as a function of RF input power. A diode parametric analysis using the theoretical model is proposed to evaluate their impact on the circuit performances. The rectifier circuit has been designed and optimised with KEYSIGHT ADS Software. The proposed rectenna has been realised and experimentally characterised. Measurement results validate the design methodology and show an efficiency of 30 % and an output DC voltage around 1 V for a 10 kΩ DC load.