In this paper, the properties of a metasurface formed by magnetic dipoles arranged in the form of a periodic structure are investigated. The studies were carried out using the method of moments (MoM) and the principle of equivalence of electric and magnetic fields. The application of the equivalence principle allows us to reduce the complex problem of calculating the properties of a metasurface formed by ordered magnetic dipoles to a simpler problem of electric dipoles. The resonant properties of the reflection and absorption coefficients of a metasurface formed by magnetic dipoles in a given direction (the effect of a phased antenna array) are revealed on the basis of the developed model. The revealed properties of the meta-surface can be used in modern telecommunication systems that use MIMO technologies. Also, the studied effects can be used to design RIS (reconfigurable intelligence surface), which makes it possible to overcome the effects of multipath signal propagation, increasing the signal-to-noise ratio, reducing the power consumption for transmitting one bit of information, which is especially important for Internet of Things technology, autonomous cyber-physical systems and unmanned aerial vehicles (UAV). Using the method of moments, it was possible to overcome the limitations of antenna system modelling programs and study devices with elements of nano- and submicron size (meta-atoms).