High-efficiency broadband cross-dipole antenna for wireless energy harvesting

A dual-polarized cross-dipole antenna with a radiating patch and a tapered balun is proposed for the harvesting of wireless energy over the frequency band from 1.92 GHz to 2.16 GHz. By optimizing the antenna dimensions, the performance of the proposed antenna is improved, such as a 1.01 of VSWR, a 96 % efficiency, and a nearly omnidirectional beam pattern. The proposed antenna could be used to supply power to many low-power electronic devices.