S.-H. LeeT.-Y. HuangRUEY-BEEI WU2018-09-102018-09-102005-0800189480http://scholars.lib.ntu.edu.tw/handle/123456789/317559https://www.scopus.com/inward/record.uri?eid=2-s2.0-24344450062&doi=10.1109%2fTMTT.2005.852763&partnerID=40&md5=444595604a91d45d5802e72ab60c5ea4An 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. © 2005 IEEE.Coplanar waveguide (CPW); Finite-element method; Microstrip line; Microwave waveguide; Model-order reduction; Non-Hermitian Lanczos algorithmAlgorithms; Computational methods; Eigenvalues and eigenfunctions; Finite element method; Information retrieval; Mathematical models; Microstrip lines; Microwave waveguides; Model-order reduction; Non-Hermitian Lanczos algorithms; Solution accuracy; Waveguidesjournal article10.1109/tmtt.2005.852763 2-s2.0-24344450062WOS:000231269400011