KEYWORDS: Antennas, Manufacturing, Printing, 3D printing, 3D modeling, Light sources and illumination, Design, Systems modeling, Solid modeling, Process modeling
The paper considers the process of developing and manufacturing prototypes of antenna devices based on printing technology. During the development of the model and its optimization, CST Studio Suite software was used, followed by processing of the antenna model in Autodesk Inventor and Altium Designer. Three methods were used for manufacturing, which were compared in terms of the speed of manufacturing antenna prototypes. Particular emphasis in the production process was placed on the introduction of additive technologies in the antenna manufacturing process.
The paper considers an active reconfigurable reflector based on an active metamaterial with the possibility of dynamic control of antenna characteristics. Due to the use of the developed design, it is possible to ensure the formation of a multifunctional dynamically tunable antenna. It is capable of generating both omnidirectional radiation and directed in the main directions: 0, 45, 90, 135, 180, 225, 270, 315 degrees. Using switching devices (pin-diodes) it is possible to achieve fast switching of antenna operating modes, as well as to ensure the operation of an active reflector in a wide frequency range. The results obtained during the simulation are supported by experimental studies of the antenna model with a reflector. Switching of operating modes is possible based on a computer.
The article considers the possibility of studying the characteristics of the electromagnetic field to ensure improved coverage by mobile stations. When ensuring optimal coverage, it is required to correctly determine the direction of arrival of electromagnetic waves, however, the housing that the direction finder carrier has makes errors in measurements. To solve this problem, it is proposed to form a virtual magnetic direction finder, which will detect the wave arrival with high accuracy. The article presents a mathematical calculation algorithm and simulation results.
KEYWORDS: Antennas, Metamaterials, Reflectors, Telecommunications, Switching, Control systems, Signal processing, Solar cells, Reflector design, Mirrors
Antennas with actively tunable radiation patterns are advanced devices for providing distant communication, but the disadvantage of such antennas is the mechanical control of the position and reflectors characteristics. Sometimes, when it would be necessary to provide directional communication, it is necessary to install additional antennas, although the reflector feed would have the required characteristics. The simulation results show that the proposed antenna design allows controlling the characteristics of radiation patterns in a wide frequency range. Thus, in the mode of a transparent reflector, the radiation pattern of the irradiator is provided; in the presence of switching in the layers of the metamaterial, the formation of a narrowly directed beam of the radiation pattern of the mirror antenna is ensured. This design providing broadband communication with various characteristics of radiation patterns.
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