A New Rectenna With All-Polarization-Receiving Capability for Wireless Power Transmission

TLDR: In this paper, a rectenna with all-polarization-receiving capability for wireless power transmission applications is presented. And the rectenna exhibits a maximum efficiency of 78% under the input power density of 295.3 $~\mu\hbox{W/cm}^{2}$.

Abstract: This letter presents a new rectenna with all-polarization-receiving capability for wireless power transmission applications. By utilizing a dual linearly-polarized antenna, the incident wave of arbitrary polarization can be totally collected at its two ports. To be connected with the antenna as a rectenna, a dual-input rectifier is designed so that the RF power supplied by the two ports of the antenna can be efficiently rectified. With a proper polarization of the incident wave, the proposed rectenna exhibits a maximum efficiency of 78% under the input power density of 295.3 $~\mu\hbox{W/cm}^{2}$ . Moreover, under the same power density, the rectenna’s efficiency can always stay higher than 61% regardless of the incident wave’s polarization.