In this paper, the effects of placing a longitudinal slot in the channel region of a rectangular waveguide ENZ structure, are analyzed. A following investigation showed that changing the length of this slot can be employed to achieve tuning of only the tunneling frequency. Maximum resonant frequency shift reported is 11%. In addition, the equivalent circuit for the ENZ structure with this kind of slot configuration was derived with an excellent agreement between numerical and full-wave simulations.
8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (metamaterials), 2014, 2014, p. 283-285
electromagnetic metamaterials; rectangular waveguides; tunnelling; Bioengineering; Communication, Networking and Broadcast Technologies; Components, Circuits, Devices and Systems; Engineered Materials, Dielectrics and Plasmas; Fields, Waves and Electromagnetics; Photonics and Electrooptics; channel region; ENZ structure; ENZ waveguide; equivalent circuit; Equivalent circuits; full-wave simulations; longitudinal slot; maximum resonant frequency shift; Metamaterials; numerical simulations; Optical waveguides; rectangular waveguide ENZ structure; Resonant frequency; single longitudinal slot and equivalent circuit parameter extraction; slot configuration; Tuning; tuning ZOR; Tunneling; tunneling frequency
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8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, 2014