Finite element analysis of propagating, evanescent, and complex modes in finlines

Author

Alam, Md S. ; Hirayama, K. ; Hayashi, Y. ; Koshiba, M.

Author_Institution

Dept. of Electron. Eng., Kitami Inst. of Technol., Hokkaido, Japan

Volume

141

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

65

Lastpage

69

Abstract

The finite element method is employed to analyse the characteristics of propagating, evanescent, and complex modes in finlines. The recently developed mixed-interpolation-type triangular elements are used, where no spurious solutions appear and consistency with the published results is obtained. The existence of the complex mode for both the even mode and the odd mode in finlines is found for particular structural parameters and at a certain frequency range. In addition, a new formulation is made for the determination of the characteristic impedance by the finite element method. The possible electric field distributions of the dominant and higher order modes including the evanescent and complex modes are also presented

Keywords

electric impedance; fin lines; finite element analysis; interpolation; waveguide theory; characteristic impedance; complex modes; dominant modes; electric field distributions; evanescent modes; even mode; finite element method; higher order modes; mixed-interpolation-type triangular elements; odd mode; propagating modes; unilateral finlines;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19949796

Filename

285812