Preferable Conditions for Excitation of Operating Mode in Non π-Mode Magnetron
V.D. Yeryomka
A. Usikov Institute of Radio Physics and Electronics,
National Academy of Sciences of Ukraine
12, Academician Proskura St., Kharkiv 61085, Ukraine
A.A. Gurko
Pluton Open Joint-Stock Company,
11, Novo-Syromyatnicheskaya St., 105120 Moscow, Russia
Abstract
The reasons for restricting the domains of existence of the doublet oscillation modes as a function of the magnetic field in periodic vane-type cavity oscillating systems of millimeter-wave magnetrons are analyzed. Analytical expressions were derived to describe the relationship between the upper domains of the operating mode existence with the oscillatory system parameters and the HF-field structure in the oscillators’ interaction space. A criterion for evaluating the stable operating mode excitation is proposed. This criterion corresponds to the magnitude of the relation between the harmonics amplitudes of competing and operating modes on a operating mode synchronization radius.
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