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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v74.i7.30
pages 585-599

OPEN RESONANT SYSTEM WITH A FOCUSING MIRROR COMPOSED OF SEVERAL REFLECTORS HAVING CYLINDRICAL SURFACE

V. S. Miroshnichenko
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
E.A. Kovalyov
V. Karazin National University of Kharkov, 4, Svoboda Sq., Kharkiv, 61077, Ukraine

要約

To obtain a sufficient interaction length in diffraction radiation oscillators, operating on THz-frequencies, is an urgent problem of diffraction electronics. One of the ways to resolve this problem is the use of a composed focusing mirror in the open resonant system. The goal of this study is to investigate experimentally the properties of resonant modes in the open resonant system with a focusing mirror composed of several cylindrical reflectors having equal radii of curvature. For the case of H-polarization the field distributions and Q-factor of resonant modes at frequencies f=25÷38 GHz are determined using focusing mirror composed of two, three and four cylindrical reflectors. The use of a focusing mirror composed of 2 reflectors is more attractive for a diffraction radiation oscillator operating on the TEM00q-resonant mode. Using the focusing mirror composed of n ≥2 cylindrical reflectors, the best properties are obtained for TEM(n-1)0q-modes, when the resonant field nulls are near to the joint of reflectors. So, when n =2, the field distribution for the TEM10q-mode is the super-Gaussian.


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