A rigorous analysis of a shielded microstrip asymmetric step discontinuity

Author

Capsalis, C.N. ; Uzunoglu, N.K. ; Chronopoulos, C.P. ; Sigourou, Y.D.

Author_Institution

Dept. of Electr. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

41

Issue

3

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

520

Lastpage

523

Abstract

Microstrip asymmetric step discontinuities are analyzed using a mode-matching technique, leading to the frequency-dependent characteristics of the structure. On both sides of the discontinuity the fields are expanded in terms of the normal even and odd hybrid modes of shielded microstrip lines, taking into account not only the propagating modes but also higher-order even and odd modes, which are evanescent-type waves. The propagation constants of the even and odd hybrid modes are computed using a previously developed method. Then a mode-matching technique is applied in order to obtain the reflection and transmission coefficients of the discontinuity. Numerical results are given for several asymmetric step discontinuities

Keywords

microstrip lines; waveguide theory; asymmetric step discontinuity; evanescent-type waves; even hybrid modes; frequency-dependent characteristics; higher order modes; mode-matching technique; odd hybrid modes; propagation constants; reflection coefficients; shielded microstrip; transmission coefficients; Frequency; Geometry; Magnetic analysis; Microstrip; Microwave circuits; Millimeter wave circuits; Propagation constant; Reflection; Strips; Transmission line discontinuities;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.223755

Filename

223755