Triple Band Stepped Microstrip Antenna for Wireless Energy Harvesting

This paper introduces stepped antennas for wireless energy harvesting. The suggested antenna is built on a low-cost FR4 board, and measurements are taken with a VNA. Microstrip line feed technique is used to excite the antenna, which is 28.40 mm long and 38.05 mm broad. The antenna is built using a 1.6 mm thick FR4 board and the simulation results show a reflectance well below -10 dB at the frequency of interest. Double-step microstrip patch antennas are used to improve impedance matching. It’s a triple band antenna that operates at 2.51 GHz, 4.45 GHz, and 6.51 GHz, or the S Band (2-4 GHz) and C Band (4-6 GHz) (4-8 GHz). The proposed antenna’s key benefit is that it can capture RF energy from three different frequencies. In this paper, the simulation results provide good impedance matching because the double stepped patch is supplied with microstrip line feeding technology using CST software.