Relations between the Characteristic Modes(CMs) and the X Modes(XMs)

Author(s): Jiang-Feng Lin, Qing-Xin Chu
SourceFERMAT, Volume 28, Communication 8, Jul.-Aug., 2018


Abstract The differences between the characteristic modes (CMs) and X modes (XMs) are pointed out. Then the relations between these two kinds of modes are discussed through two examples, namely, a thin strip dipole and a rectangular loop. It is found that CMs and XMs have similar resonant frequencies (RFs) and resonant currents (RCs). Finally, it is concluded that the resonant information of an antenna, which includes RFs and RCs, exists only in the imaginary part of the impedance operator (namely, reactance operator) of the antenna.

Index TermsCharacteristic Modes (CMs), X Modes (XMs), relations,  impedance operator, resonant frequencies (RFs), resonant currents (RCs), antenna theory


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Relations between the Characteristic Modes(CMs) and the X Modes(XMs)









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