FIELD: radio engineering.
SUBSTANCE: invention relates to radio engineering and can be used in systems for wireless power transmission over a distance to improve the efficiency of rectennas in the microwave, THz and visible ranges. The proposed rectenna consists of an array of nanoantennas, a common rectifier for converting AC to DC, functionally connected to the nanoantenna. Nanoantennas are made in the form of mesodimensional dielectric particles with a characteristic size of at least λ, where λ is the wavelength of the radiation used, with a relative refractive index of the material ranging from approximately 1.4 to 2.0, forming on their outer boundary on the opposite side of incident radiation of a region with increased radiation intensity with transverse dimensions of the order of λ/3-λ/4, and the receiving devices are located directly on the shadow surface of the particle in this region with increased radiation intensity. The proposed rectenna has a low level of dissipative losses compared to analogues due to the fact that dielectric materials are used with a relatively low refractive index, radiation focusing with transverse dimensions less than the diffraction limit and the presence of a magnetic response, that is, the rectenna can work with magnetic type radiation sources.
EFFECT: development of a rectenna having low energy losses in the receiving antenna.
1 cl, 3 dwg
