Title :
Fast Waveguide Eigenanalysis by Wide-Band Finite-Element Model-Order Reduction
Author :
Lee, Shih-Hao ; Huang, Ting-Yi ; Wu, Ruey-Beei
Author_Institution :
Dept. of Electr. Eng., Graduate Inst. of Commun. Eng., Taipei, Taiwan
Abstract :
An efficient method for fast wide-band eigenmode analysis is presented in this paper. The finite-element solution space is projected to a subspace containing frequency-dependent information obtained at a single frequency by a Lanczos algorithm and modified perturbation theory, resulting in a single-point reduced-order model accurate over an extremely wide frequency range. A numerical procedure is developed to extract a desired mode from the reduced-order model for fast frequency sweep and is then applied to several practical problems, which demonstrate the solution accuracy and computational efficiency of the proposed method.
Keywords :
coplanar waveguides; eigenvalues and eigenfunctions; finite element analysis; microstrip lines; reduced order systems; coplanar waveguide; fast waveguide eigenanalysis; fast wide-band eigenmode analysis; finite-element solution space; frequency sweep; frequency-dependent information; microstrip line; microwave waveguide; modified perturbation theory; nonHermitian Lanczos algorithm; single-point reduced-order model; wide-band finite-element model-order reduction; Computational efficiency; Coplanar waveguides; Data mining; Electromagnetic waveguides; Finite element methods; Frequency; Optical waveguides; Reduced order systems; Taylor series; Wideband; Coplanar waveguide (CPW); finite-element method; microstrip line; microwave waveguide; model-order reduction; non-Hermitian Lanczos algorithm;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2005.852763
