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Keywords = wave analog of Smith–Purcell radiation

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17 pages, 2186 KiB  
Article
Axial-Symmetric Diffraction Radiation Antenna with a Very Narrow Funnel-Shaped Directional Diagram
by Yuriy Sirenko, Seil Sautbekov, Merey Sautbekova, Nataliya Yashina, Nursaule Burambayeva and Assel Begimova
Appl. Sci. 2021, 11(21), 10381; https://doi.org/10.3390/app112110381 - 5 Nov 2021
Cited by 2 | Viewed by 2376
Abstract
The paper is focused on reliable modeling and analysis of axially symmetric radiators with a very narrow (throat) funnel-shaped radiation pattern. When such a diagram is formed, a wave analogue of Smith–Purcell coherent radiation is realized—the surface wave of a radial dielectric waveguide [...] Read more.
The paper is focused on reliable modeling and analysis of axially symmetric radiators with a very narrow (throat) funnel-shaped radiation pattern. When such a diagram is formed, a wave analogue of Smith–Purcell coherent radiation is realized—the surface wave of a radial dielectric waveguide ‘sweeps out’ with its exponentially decaying part a concentric periodic grating, the fundamental spatial harmonic of which, propagating without attenuation in a direction close to the symmetry axis of the structure, generates a radiation field with the required characteristics. Full article
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