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HIGHER ORDER FINITE ELEMENT METHOD FOR INHOMOGENEOUS AXISYMMETRIC RESONATORS

By X. Rui, J. Hu, and Q. H. Liu

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Abstract:
To analyze resonances in an axisymmetric inhomogeneous cavity, a higher-order finite element method (FEM) is developed. Mixed higher-order node-based and edge-based elements are applied to eigenvalue analysis for the azimuthal component and meridian components of the field, respectively. Compared with the lower-order FEM, the higher-order FEM can improve accuracy with the same number of unknowns and can reduce the CPU time and memory requirement for specified accuracy. Numerical results are given to demonstrate the validity and efficiency of the proposed method.

Citation:
X. Rui, J. Hu, and Q. H. Liu, "Higher Order Finite Element Method for Inhomogeneous Axisymmetric Resonators," Progress In Electromagnetics Research B, Vol. 21, 189-201, 2010.

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