Компактний хвилевідний поляризатор із трьома протифазними штирями

Abstract

Nowadays one of the fundamental problems is the economy of digital information and frequency resources. The introduction of modern telecommunication systems and 5G networks requires the search for fundamental methods to save and reuse frequency resources. To save the frequency resource in modern communication systems the new technologies for the increase of the information capacity of communication channels are used. Antenna systems with polarization signal processing are applied for this purpose. Such systems allow transmitting signals with different types of polarization. The application of the electromagnetic waves with orthogonal polarizations improves the information characteristics of radio systems for various purposes. This makes it possible to double the information capacity of satellite communication channels. In addition, such processing is carried out in meteorological and radar systems for receiving, transmitting and processing of the information. The key devices of such systems are polarizers and orthomode transducers. The electromagnetic characteristics of these devices affect the overall system performance. The electromagnetic characteristics include phase, matching and polarization characteristics. The article presents the results of the development of an adjustable polarizer based on a square waveguide with three posts. The developed polarizer operates in the X-band from 8,0 GHz to 8,5 GHz. The mathematical model of such a device is based on the scattering and transmission wave matrix. The characteristics of the model were obtained through the elements of this matrix. To check the correctness of the developed model, a model based on the finite integration method was also created. This method is often used to simulate microwave devices. The developed polarizer based on a square waveguide with three posts allows regulating its matching and polarization characteristics by changing the length of the posts. Such devices are characterized by small transverse dimensions and stability of the polarization transformation parameters.