Метод розрахунку основних характеристик хвилевідно-щілинної антени

Abstract

In most works devoted to the design of a waveguide slot antenna, is not considered their use for use in everyday life. Therefore, the aim of this article is the study and calculation of the main parameters of slotted waveguide antennas and statistical characteristics of antenna radiation, which could result not only in aviation but also the use life of the common man, for example, in systems of direct satellite television channels. Single slit emitter has a weak directivity property. Therefore, practical use of multi-element slotted antennas, directional properties which significantly depend on the number of cracks, their relative position on the walls of the waveguide and mode of operation of the transmission line. Accordingly, distinguish between resonant and not resonant antennas. Each of these classes, it is possible to build the so-called agreed cracks. The drawback of slot antennas is their narrow scope. Multi-element slot antennas are also used in cases when you need to create a fan chart orientation.The article presents the formulas and calculated the main characteristics of the antenna, namely the calculation of resonant gratings, made using the energy method. This method has quite high accuracy in the calculation of the exactly resonant waveguide-slot antenna arrays or lattices of the traveling wave with the configured slots. The disadvantage of the energy method is that it doesn't go far enough to consider the impact of design features of such antennas: the thickness of the wall of the waveguide, presence of sealants and protective coatings, non-ideal conductivity of the metal, the difference of the shape of the cracks from the square. For these reasons, it is reasonable accurate electrodynamic simulation of slotted waveguide arrays of different types, with the aim of using it to refine the results of engineering calculations, which is the purpose of further research of the authors.