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Nowadays radio electronic devices are widely used in many fields of national economy. One of these fields is the space energetics, where systems of wire-less power transmission by a microwave beam (WPT system) are rather viable and have good prospects for realization. A transmitting part of WPT system, radiating a required power and forming the micro-wave beam of a desired form, is maintained on a power satellite supplying energy to a few space vehicles. As receivers of energy on these vehicles arrays of antenna-rectifiers (rectennas) are used, which transform microwave energy into direct current by means of rectifying Schottky diodes.