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

Volume

48

Issue

12

fYear

2000

fDate

12/1/2000 12:00:00 AM

Firstpage

2289

Lastpage

2296

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;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.898977

Filename

898977