A New Defective Ground Structure Inspired High Gain Rectenna System for RF Energy Harvesting in Smart City Applications

In this paper, a new rectenna system for RF energy harvesting applications has been proposed. The antenna offers 5.8327 dB of gain. The results obtained demonstrate that the suggested antenna offers a substantial gain of 5.8327 dB and an impedance bandwidth of 1.7183 GHz. The rectifying component incorporates a single series diode (SSD) design, which accurately matches the input impedance by employing L-shaped transmission line matching network. This design choice allows for the efficient utilization of the majority of the received power. The results obtained from the simulation demonstrate that the rectenna achieved a notable conversion efficiency of 68.103% when exposed to a load of 2 kΩ at 3.5 GHz operating frequency and an input power of 5 dBm. The produced output DC voltage is 2.075 V.