Title :
Accurate study of Q-factor of resonator by a finite-difference time-domain method
Author :
Wang, Chi ; Gao, Ben-qing ; Deng, Ci-Ping
Author_Institution :
Dept. of Electron. Eng., Beijing Inst. of Technol., China
fDate :
7/1/1995 12:00:00 AM
Abstract :
This paper describes the application of the finite-difference time-domain method to find the resonators´ Q-factors. There are some techniques which can be used to reach it. One way is to directly compute the power loss using the surface impedance boundary condition (SIBC). The other is to incorporate the perturbation techniques to calculate the Q-value. The rectangular and cylindrical cavities have been studied by these methods. A number of superconductor-sapphire microwave resonators with extra high Q-values have been studied. The results are very good in accuracy
Keywords :
Q-factor; finite difference time-domain analysis; perturbation techniques; sapphire; superconducting cavity resonators; Q-factor; cylindrical cavities; finite-difference time-domain method; perturbation techniques; power loss; rectangular cavities; superconductor-sapphire microwave resonators; surface impedance boundary condition; Boundary conditions; Discrete Fourier transforms; Electromagnetic scattering; Finite difference methods; Perturbation methods; Q factor; Resonant frequency; Shape; Surface impedance; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
