Title :
Modeling of cascaded coplanar waveguide discontinuities by the mode-matching approach
Author :
Schmidt, Rolf ; Russer, Peter
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ. Munchen, Germany
fDate :
12/1/1995 12:00:00 AM
Abstract :
Cascaded coplanar waveguide discontinuities with transverse dimensions of the order of some micrometers are analyzed by the mode-matching and generalized scattering matrix method. This approach permits a full-wave analysis of the electromagnetic field also in the metallic regions. Compared with full-wave analysis assuming perfect conductors and a subsequent loss computation based on the surface impedance model the accuracy is considerably enhanced. The mode-matching method is revisited in the context of a network representation of discontinuities. The implications of Tellegen´s general network theorem on the mode-matching method, particularly on the testing functions, are investigated. Furthermore, the mode-matching method is related to the equivalence principle applied to discontinuities and to the continuity condition of voltage and current of quasi-TEM waves in the static approximation
Keywords :
S-matrix theory; cascade networks; coplanar waveguides; mode matching; waveguide discontinuities; waveguide theory; cascaded coplanar waveguide discontinuities; continuity condition; electromagnetic field; equivalence principle; general network theorem; generalized scattering matrix; metallic regions; mode-matching; modeling; quasi-TEM waves; static approximation; testing functions; Conductors; Coplanar waveguides; Electromagnetic analysis; Electromagnetic fields; Electromagnetic scattering; Electromagnetic waveguides; Mode matching methods; Surface impedance; Transmission line matrix methods; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on