A Wideband Star-Shaped Rectenna for RF Energy Harvesting in GSM Band

Abstract

This paper presenting the wideband printed star-shaped slot rectenna for the RF energy harvesting. This rectenna provides wideband rectifier at 900 MHz for global system for mobile (GSM) application. In this design, two rhombus-shaped slots are used to merge the resonant modes near the centre frequency. The proposed antenna provides the wide bandwidth of 47.58% (823–1336.9 MHz) than the conventional rhombus-shaped slot. In rectifier circuit, the conversion efficiency of 61.7% at −8dBm at 900 MHz for GSM band has been achieved. The received waves is rectified and converted into DC power by using Schottky diode HSMS 2850. L-type equivalent circuit is used to get total output power at the load. The output voltage provides 2 V at 0 dBm. This device is good for RF energy harvesting. This proposed rectenna can be utilized for the GSM applications.