Title :
Eigenmodes in open coaxial cylindrical resonators
Author :
Barroso, J.J. ; Castro, P.J.
Author_Institution :
Lab. Associado de Plasma, Inst. Nacional de Pesquisas Espaciais, Sao Paulo, Brazil
Abstract :
The electrodynamical properties of open coaxial cylindrical resonators using a partially-conical inner rod are examined on the basis of a resonance criterion for the eigenmodes. Owing to the spectral rearrangement arising from the presence of a coaxial insert, it turns out possible to isolate the desired operating mode from its neighboring competitors. The modelling of an especially designed cavity demonstrates that the corresponding TE-mode spectrum is markedly diluted in the 5-10 GHz range. The coaxial structure with a conical inner rod, is shown to be highly selective, and can find useful applications in high-power gyrotrons and frequency-tunable resonators
Keywords :
cavity resonators; eigenvalues and eigenfunctions; electrodynamics; gyrotrons; tuning; 5 to 10 GHz; SHF; TE-mode spectrum; cavity; coaxial insert; eigenmodes; electrodynamical properties; frequency tunable resonators; high power gyrotrons; open coaxial cylindrical resonators; operating mode isolation; partially conical inner rod; resonance criterion; spectral rearrangement; Coaxial components; Conductors; Cutoff frequency; Equations; Geometry; Gyrotrons; Plasma properties; Resonance; Resonant frequency; Tellurium;
Conference_Titel :
Microwave and Optoelectronics Conference, 1995. Proceedings., 1995 SBMO/IEEE MTT-S International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2674-1
DOI :
10.1109/SBMOMO.1995.509722
