Title :
Analysis of quasi complex modes on lossy substrate boxed microstrip lines
Author :
Huret, F. ; Pribetich, P. ; Kennis, P.
Author_Institution :
Centre Hyperfrequences et Semicond., CNRS, Villeneuve d´´Ascq, France
Abstract :
Using the spectral domain approach improved by asymptotic expansions, it is shown by means of coupling integral values that the notion of quasi-complex modes can be introduced for lightly lossy substrates. The distribution of electric and magnetic fields in the cross section plane of a boxed microstrip line is shown as an example. Since for lossy structures all modes have a complex propagation constant, so the quasi-complex modes are particular modes with behavior similar to that of lossless structure complex modes.<>
Keywords :
guided electromagnetic wave propagation; spectral analysis; strip lines; waveguide theory; asymptotic expansions; complex propagation constant; cross section plane; lightly lossy substrates; lossless structure complex modes; lossy substrate boxed microstrip lines; quasi complex modes; spectral domain approach; Conductivity; Coupling circuits; Electromagnetic analysis; Frequency; Microstrip; Optical coupling; Propagation constant; Propagation losses; Substrates; Transmission line discontinuities;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147091
