Title :
The cold quality factor of magnicon on resonator in the rotating TM n10 mode and compared with its equivalent for the static mode
Author_Institution :
Inst. of Appl. Electron., Chengdu, China
Abstract :
The field distribution of the magnicon operating in a rotating TM n10 mode in the cylindrical cavity is different from that in a static mode, and so respectively are expressions of the stored energy in the cavity, time-average dissipating power and cold quality factor, et al., under the same amplitude of the electrical fields, in the above-mentioned two modes. By means of the rotating and static field distribution expressions and the integrated Bessel function, these expressions for the rotating and static mode are deduced. In a first approximation, the average value gˆn and qˆn of the coefficient gn and qn are used for g n, and qn in these formulas in the different range of n, such as gˆn=1.5∈(0<n<8), gˆn =1.4∈(7<n<12), and gˆn=1.3∈(11<n<20). The corresponding average qˆn is also known. The deduced expressions of static cold quality factor are different from what are widely adopted now
Keywords :
Bessel functions; Q-factor; cavity resonators; microwave power amplifiers; microwave tubes; cavity stored energy; cold quality factor; field distribution; integrated Bessel function; magnicon; resonator; rotating TMn10 mode; static mode; time-average dissipating power; Apertures; Cutoff frequency; Driver circuits; Electric resistance; Equations; Erbium; Magnetic separation; Q factor; Radio frequency; Surface resistance;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768342