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Telecommunications and Radio Engineering
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ISSN Imprimir: 0040-2508
ISSN En Línea: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v53.i11.110
pages 61-66

Excitation of a Diffracted Radiation Generator (Orotron) with a Double-Periodic Structure at Sub-Critical Frequencies

M. Yu. Demchenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine. 12, Academician Proskura St., Kharkov 61085, Ukraine
Boris Kuz'mich Skrynnik
Senior Researcher and Head of department in the Institute of Radio Engineering and Electronics, Ukrainian National Academy of Sciences. Rewarded with the Prize of the USSR Council of Ministers.

SINOPSIS

The diffracted radiation generator (orotron) with a double synchronous grating, operating in the volume and surface wave modes, is analyzed for frequencies below the critical one for a grating of finite width. It is shown that in an elementary cell of such a periodic structure, the fundamental H10 mode is transformed to modes of separate single gratings when the operating frequency approaches to the critical value. The magnetic field vector H of these modes is directed along the resonator axis. Such oscillations of the elementary cell do not have a critical frequency, since the cell structure is open in the direction of the vector H, i.e. from the side of the mirror.