Left-Handed Waveguide Using Cutoff TM-Mode

Mitsuyoshi KISHIHARA  Yuki MIZUTANI  Isao OHTA  Kensuke OKUBO  Hironori TAKIMOTO  

IEICE TRANSACTIONS on Electronics   Vol.E99-C    No.1    pp.61-67
Publication Date: 2016/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.61
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
circular waveguides,  EBG devices,  electromagnetic propagation,  rectangular waveguides,  

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It has been reported that a left-handed waveguide can be constituted using cutoff TE10 mode of rectangular waveguide. Because the cutoff TE10 mode shows effectively negative permittivity, the left-handed mode propagates by adding series capacitance in the form of short- or open-stubs. This paper suggests a constitution method of left-handed waveguides using cutoff TM mode. In this case, the cutoff TM mode shows effectively negative permeability. Therefore, a left-handed waveguide can be constituted by adding parallel inductance. In this paper, two types of the left-handed waveguides are designed using circular TM01 mode and rectangular TM11 mode, and the dispersion characteristics are numerically investigated. The validity of the constituting principle is confirmed by an experiment.