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Faster technique for the modal analysis of a coaxial cable with misaligned inner conductor
Author(s) -
Gesmundo Attilio,
Vaccaro Vittorio G.,
Guglielmi Marco
Publication year - 2004
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2003rs002972
Subject(s) - fortran , conductor , modal , modal analysis , coaxial , inversion (geology) , basis (linear algebra) , numerical analysis , computer science , matrix (chemical analysis) , cutoff , algorithm , mathematical analysis , acoustics , mathematics , physics , geometry , telecommunications , geology , paleontology , chemistry , structural basin , polymer chemistry , operating system , materials science , composite material , vibration , quantum mechanics
In this article we present a new technique for the modal analysis of a coaxial conductor with misaligned inner rod. The value of this method lies in the fact that, being based on linear techniques, it is possible to achieve the cutoff frequencies of the propagating modes without losing precision when the order of the modes increases. The differences in the results, obtained using 225 and 1600 basis functions, is quite negligible. Moreover, the procedure is completely analytical up to the evaluation of projection integrals, and the numerical part is restricted only to the matrix inversion. Therefore the run time needed is very low. This method was implemented in Fortran software written on this purpose by the authors. Numerical results are presented, keeping into account the computational time and complexity, and finally showing good agreement with other results already present in literature.