电信和无线电工程
每年出版 12 期
ISSN 打印: 0040-2508
ISSN 在线: 1943-6009
SJR:
0.185
SNIP:
0.268
CiteScore™::
1.5
H-Index:
22
Indexed in
Analysis of Doublet Mode Existence Region
卷 52,
册 12, 1998,
pp. 55-58
DOI: 10.1615/TelecomRadEng.v52.i12.120
摘要
In designing magnetrons operating at non-π-mode spatial harmonics, one is generally faced with problems related to a limited operating mode existence region in a magnetic field as well as to a disagreement, in many cases quite significant, between the predicted and real values for its upper boundary. The dependence of the upper boundary of the mode existence region on the parameters of the interaction space is described by the empirical relation [1]
where Us is the synchronization potential, σ is the ratio of the cathode to the anode radius (rc/ra), λ = mN + n is the spatial harmonic number, N is the number of cavities, and m is an arbitrary integer (ranging from −∞ to ∞). The disagreement between theory and experiment becomes more pronounced with increasing predicted value of Ua/Us, and one cannot always achieve the desired maximum electronic efficiency.
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