Title :
An optimum design method for eigenvalue problems
Author :
Lee, Hong-bae ; Lee, Seung-Woo ; Jung, Hyun-Kyo ; Hahn, Song-Yop ; Cheon, Changyul ; Kim, Hyeong-Seok
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
5/1/1996 12:00:00 AM
Abstract :
This paper presents an optimum design method for an eigenvalue system in electromagnetics. For the spurious mode free analysis of the eigenvalue system, the vector finite element method is adopted. In order to obtain the gradient of the objective function, which is given as a function of eigenvalues, with respect to the design variables, the eigenvalue design sensitivity analysis is proposed. The proposed method is applied to lower the cut-off frequency and to broaden the frequency range of ridged waveguides. The numerical examples of the ridged waveguide designs show the validity of the proposed method
Keywords :
design engineering; eigenvalues and eigenfunctions; finite element analysis; optimisation; ridge waveguides; sensitivity analysis; waveguide theory; computational electromagnetics; cut-off frequency; design variables; eigenvalue design sensitivity analysis; eigenvalue problems; frequency range; gradient; objective function; optimum design method; ridged waveguide; spurious mode free analysis; vector finite element method; waveguide designs; Cutoff frequency; Design engineering; Design methodology; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Electronic mail; Finite element methods; Propagation constant; Resonance; Sensitivity analysis; Transmission line matrix methods;
Journal_Title :
Magnetics, IEEE Transactions on
