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EN
The paper presents and discusses the operation of a mobile application using the Augmented Reality (AR) to visualize the electromagnetic (EM) radiation of a horn antenna. The mobile application serves as a teaching aid and complements the laboratory setup for investigating EM radiation from a horn antenna. The EM radiation visualisation data were obtained through numerical simulation using the CST Studio Suite software, which enables modelling and simulation of various EM interactions. The mobile application was created using the Unity engine, which enables the development of mobile applications. The Vuforia library was used to implement digital data (obtained through numerical simulation) and overlay it onto the real image captured by the mobile camera. The application runs on devices with Android 8.0 and higher, and integrates the real 3D environment with virtual reality in real time.
PL
W artykule zaprezentowano aplikację mobilną wykorzystującą rozszerzoną rzeczywistość (ang. Augmented Reality, AR) do wizualizacji znormalizowanego natężenia pola elektrycznego w polu dalekim anteny tubowej. Dane wejściowe do aplikacji uzyskano na drodze symulacji numerycznej. Do symulacji zastosowano środowisko CST Studio umożliwiające rozwiazywanie zagadnień elektromagnetycznych w szerokim zakresie częstotliwości. Aplikacja mobilna ma charakter dydaktyczny i stanowi ciekawe uzupełnienie laboratorium w ramach przedmiotu Anteny i Propagacja Fal na Wydziale Elektrycznym Uniwersytetu Morskiego w Gdyni.
EN
The paper presents a mobile application using augmented reality AR to visualize electromagnetic phenomena EM in the example of a horn antenna. The input to the application was obtained by numerical simulation. CST Studio environment was used for simulation to solve electromagnetic issues in a wide frequency range. The mobile application is didactic in nature and is an interesting addition to the laboratory as part of the antenna and wave propagation subject at the Department of Marine Electronics of the Maritime University of Gdynia.
EN
To determine the local inhomogeneities of a rotating plasma, the method based on microwave refraction was used. The method is based on spectral and correlation analysis of the refl ected signals from the rotating plasma layer at normal and inclined microwave incidence. This method allowed us to determine local inhomogeneities of plasma electron density, angles of azimuthal displacement of grooves, and its angular frequency of rotation. Using an additional 4th horn antenna, in contrast to previous works, it was possible to fi nd and analyze two regions with azimuthal inhomogeneities in the rotating plasma. Analysis of the refl ected signals shows the presence of four grooves, and the angular frequency of rotation  = 1.16 × 104 rad/s was also determined.
4
Content available remote Ka-band antennas simulation for LTCC antenna-on-chip solution
EN
Different Ka-band antenna designs optimized for LTCC technology were studied. With the help of finite element method spiral, patch and horn antennas were simulated. Calculated VSWR, radiation pattern cross section and axial ratio for described designs are presented. It was shown that the most suitable LTCC design for antenna array in Ka-band is horn antenna.
PL
Analizowano różne anteny dla pasma K i technologii LTCC. Stosując metodę elementów skończonych analizowano trzy różne kształty anteny. Stwierdzono że najlepsze parametry ma antena ftpu horm (róg).
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