Spurious Radiation of Rectenna Receiving-Rectifying Elements

The characteristics of the rectennas spurious radiation - the total radiation power and their radiation pattern on the highest harmonics frequencies are considered. The offered methods of the rectennas analysis is based on the general method of antennas with nonlinear elements analysis developed by the authors. The plots, illustrating the change of the spurious radiation level and structure of various variants of the rectennas single receiving-rectifying elements (RRE), depending on the power value incident on the RRE, the type of radiators used in them, the RRE circuit, are given.