Plasmonic metamaterials based subwavelength multiband antenna for wireless energy harvesting

Abstract

Here three subwavelength multiband receiving antennas have been designed using corrugated ring resonator printed on a thin dielectric substrate with spiral-shaped defect ground structure (DGS). Numerical simulations verified that these multiband antennas have multiband with a small size of only 0.1λ*0.1λ. In addition, a 2*2 antenna array has been proposed and numerically demonstrated that the gain can be further improved based on the above antenna with dimension of 33mm*33mm. Such subwavelength multiband receiving antennas are necessary for efficient wireless energy harvesting (WEH), which can find many applications in various areas including internet of things (IoT), smart house, RFID, wireless sensor network (WSN), and so on. More detailed work will be presented in the final paper.