МИКРОВОЛНОВЫЕ ПОЛЯРИЗАТОРЫ НА ОСНОВЕ ПЕЧАТНЫХ ДИФРАКЦИОННЫХ РЕШЕТОК МЕАНДРОВОГО ТИПА

Abstract

The problem of printed gratings application is considered as converters of electromagnetic wavespolarization and polarizing modulators. Two directions in development of antenna engineering areconsidered in this paper. In each of them the scattering fields control of an antenna arrays allows essentiallyto expand functionalities of radio engineering sets. The first direction is the creation of auxiliarydepolarizing reflectors for two-mirror reflector antennas and folded lenses. In addition, in meanderlinepolarizers based on printed gratings, it is possible to constructively realize the necessary phase distributions of the field on their surfaces. Thus, it becomes possible to use such meanderline polarizers to createmultifunctional microwave antenna radomes. The second direction is connected to application ofantenna arrays for a reduction of a radar cross section of the radar-tracking targets. Transformation ofa field polarization by an antenna array allows to achieve both these purposes. In an aspect of high costand complexity of arrays experimental researches as a method of the analysis the mathematical simulationis selected. Besides, it is shown that introduction of impedance loads in the construction of the reradiatingelements of the printed grating opens additional possibilities for controlling the field scatteredby it. Thus, meanderline polarizers with improved characteristics can be realized on the basis ofmicrostrip-pin gratings. The given results can be used for choosing the most of rational electrodynamicstructure geometry variant at decision of particular problems by antennas engineering. The possible flatarrays based on printed complicated shape elements application area is also discussed and it's shownthese arrays are the very attractive type for controllable radioelectronic covers designing at microwaves.Some numerical results presented prove the possibility of a printed arrays application as smartcovers microwave modules.