Title :
Optimal shape design of microwave device using FDTD and design sensitivity analysis
Author :
Chung, Young-Seek ; Cheon, Changyul ; Park, Il-Han ; Hahn, Song-Yop
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
12/1/2000 12:00:00 AM
Abstract :
In this paper, a novel optimal shape design method is proposed using the finite-difference time-domain (FDTD) method and the design sensitivity analysis to obtain broad-band characteristics of microwave devices. In shape design problem, the nodes that describe the shape of geometry to be optimized are taken as design variables. The design sensitivity is evaluated using the adjoint variable equation that is obtained from a terminal-value problem. The adjoint equation can be solved by the FDTD technique with the backward time scheme. With this method, a Ka-band unilateral fin line is tested to show validity
Keywords :
fin lines; finite difference time-domain analysis; microwave devices; sensitivity analysis; FDTD; Ka-band unilateral fin line; adjoint variable equation; backward time scheme; broad-band characteristics; design sensitivity analysis; design variables; microwave device; shape design; terminal-value problem; Design methodology; Design optimization; Equations; Finite difference methods; Geometry; Microwave devices; Microwave theory and techniques; Sensitivity analysis; Shape; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
