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Discussion of series and parallel resonance phenomena in the input impedance of antennas
Author(s) -
Obeidat Khaled A.,
Raines Bryan D.,
Rojas Roberto G.
Publication year - 2010
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 - 10.1029/2010rs004353
Subject(s) - series (stratigraphy) , electrical impedance , resonance (particle physics) , acoustics , physics , mathematics , computer science , geology , atomic physics , paleontology , quantum mechanics
The series and parallel resonances of an antenna's input impedance are explained through the theory of characteristic modes (CM). We are showing for the first time that the parallel resonance phenomenon corresponds to the interaction of at least two nearby CM, each having eigenvalues of opposite sign. Additionally, the series resonance phenomenon is shown to be mainly due to the resonance of a single characteristic mode. Analysis of a simple wire dipole antenna, an edge‐fed patch antenna, and a loop antenna are used to validate this finding.