The Two Dimensional Analysis of RF Passive Device using Stochastic Finite Element Method

확률유한요소법을 이용한 초고주파 수동소자의 2차원 해석

  • 김준연 (서울시립대 공대 전자공학과 석사) ;
  • 정철용 (서울시립대 공대 전자공학과 석사) ;
  • 이선영 (서울시립대 공대 전자공학과) ;
  • 천창렬 (서울시립대 공대 전자공학과)
  • Published : 2000.04.01


In this paper, we propose the use of stochastic finite element method, that is popularly employed in mechanical structure analysis, for more practical designing purpose of RF device. The proposed method is formulated based on the vector finite element method cooperated by pertubation analysis. The method utilizes sensitivity analysis algorithm with covariance matrix of the random variables that represent for uncertain physical quantities such as length or various electrical constants to compute the probabilities of the measure of performance of the structure. For this computation one need to know the variance and covariance of the random variables that might be determined by practical experiences. The presenting algorithm has been verified by analyzing several device with different be determined by practical experiences. The presenting algorithm has been verified by analysis several device with different measure of performanes. For the convenience of formulation, two dimensional analysis has been performed to apply it into waveguide with dielectric slab. In the problem the dielectric constant of the dielectric slab is considered as random variable. Another example is matched waveguide and cavity problem. In the problem, the dimension of them are assumed to be as random variables and the expectations and variances of quality factor have been computed.


SFEM;Perturbation method;FEM;RF passive device


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