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Wave propagation in weakly coupled microstrip lines — an anomalous degenerate quasi‐tem solution
Author(s) -
Faria J. A. Brandão
Publication year - 1989
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650020412
Subject(s) - superposition principle , quasistatic process , microstrip , degenerate energy levels , conductor , exponential function , physics , mathematical analysis , mathematics , optics , geometry , quantum mechanics
Coupled‐mode analysis of multiconductor microstrip lines, based on quasi‐TEM approximations, leads to a wave solution usually obtained by superposition of exponential elementary waves. This paper shows that critical situations exist where such simple exponential waves cannot describe the propagation phenomenon. Particular relationships among the quasistatic parameters of a two‐conductor asymmetrical microstrip line are obtained allowing the synthesis of a physically realizable critical situation where an anomalous wave solution is required.