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Modal circuit decomposition of lossy homogeneous uniform quasi‐TEM coupled transmission lines
Author(s) -
Brandão Faria J. A.
Publication year - 1999
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/(sici)1098-2760(19990405)21:1<8::aid-mop3>3.0.co;2-0
Subject(s) - lossy compression , realizability , modal , lossless compression , transmission line , electric power transmission , invertible matrix , microwave , transformation matrix , modal analysis , electronic engineering , mathematical analysis , topology (electrical circuits) , mathematics , engineering , physics , electrical engineering , acoustics , materials science , telecommunications , pure mathematics , algorithm , classical mechanics , data compression , kinematics , polymer chemistry , vibration , statistics
This paper presents a detailed analysis and discussion of the conditions on which the realizability of modal circuit decomposition for lossy homogeneous quasi‐TEM coupled transmission lines stands. It is shown that the requirement of a real nonsingular modal transformation matrix cannot always be met. With the exception of some limit situations (lossless conductors or very high‐frequency operation), equivalent modal circuits can only be obtained, in general, for transmission‐line configurations exhibiting very peculiar symmetry properties. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 8–11, 1999