Abstract
A cylindrical cavity resonator of TE 013 mode was constructed and Its Q-value was measured at the frequency of 3075 Mc/sec. It was found that the Q-value is reduced, when the end-plate of the cavity is slightly tilted. The optimum Q-value (Q 0 =7.53×10 4 ) agrees well to that calculated from the d.c. conductivity of the wall material (copper). It may be considered that some other modes (TE 11 , TE 12 and TM 11 modes) of waves are generated from the primary TE 01 mode and they are lost as heat and radiation, when the end-plate is tilted. Thereby the resonance of TE 01 mode is damped by mode conversion which is calculated assuming the deformation of the cavity wall is small. The calculated result agrees well to the observed Q-value of the cavity with tilted end-plate.
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