Analysis of shielded microstrip lines with arbitrary metallization cross section using a vector finite element method

Author

Alam, Md Shah ; Hirayama, Koichi ; Hayashi, Yoshio ; Koshiba, Masanori

Author_Institution

Dept. of Electron. Eng., Hokkaido Univ., Sapporo, Japan

Volume

42

Issue

11

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

2112

Lastpage

2117

Abstract

The finite element method (FEM) with the high-order mixed-interpolation-type triangular element is used to solve the problem of practical microstrip lines with arbitrary metallization cross section. Analyses are carried out to produce the frequency characteristics of propagation constant, characteristic impedance, and attenuation constant of shielded microstrip lines with rectangular, trapezoidal, and semi-trapezoidal strip cross sections. A comparison of the numerical results with those of the existing results shows good agreement and thus verifies the versatility of the FEM. Also, the numerical results show the effects of the metallization cross sections on the transmission properties and thus emphasize the importance of considering the practical microstrip configurations in the design of miniaturized MMICs

Keywords

MMIC; finite element analysis; interpolation; metallisation; microstrip lines; waveguide theory; attenuation constant; characteristic impedance; finite element method; frequency characteristics; high-order mixed-interpolation-type triangular element; metallization cross section; miniaturized MMICs; propagation constant; rectangular strip cross sections; semitrapezoidal strip cross sections; shielded microstrip lines; transmission properties; trapezoidal strip cross sections; vector FEM; Attenuation; Fabrication; Finite element methods; Frequency; Geometry; Impedance; Metallization; Microstrip; Propagation constant; Strips;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.330127

Filename

330127