Reflection coefficient, transmission coefficient and orientation diagram ofE-sector transition antenna from rectangular waveguide to the megaphone are defined as experimental.H10type is determined as the main type in rectangular waveguide transmitting electromagnetic waves. The main parameters of the rectangular waveguide measuring 40 × 20mmare calculated by methods of Galerkin and Rits. Theoretical and experimental results have been compared and the error between them have been determined as satisfactory. The results obtained can be used in devices for automatic monitoring of secondary parameters of antennas. Since the automatic control of the secondary parameters of the antennas is made possible by constantly directing the maximum of the receive antenna antenna pattern.
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