On Calculation
of R/Q Ratio of Microwave Vacuum Tubes Multiple Beam Cavities
Boris V.
Prokofyev 1
,
Alexander V.
Konnov 1,
Vladimir L.Savvin 2
1
FSUE
“R&P Corp. ”Toriy”, Moscow
2
M.
V. Lomonosov Moscow state university, physics faculty, chair of photonics and
microwave physics
Received November
22, 2011
Abstract.
A formula for calculation of
R/Q ratio of microwave vacuum tubes multiple beam cavities by arbitrary
perturbation of the gap RF electric field is derived. It is shown that the
wide used R/Q ratio formula based on the small perturbation and homogeneity of
the gap RF electric field leads to conservative values of R/Q ratio. The
results obtained by refined formula are in good correspondence with these
computed by macros developed for CST Microwave Studio code.
Key
words: cavity
R/Q ratio, multiple beam cavity, microwave vacuum tubes, perturbation method,
macros.