Wideband Tuning of the Tunneling Frequency in a Narrowed Epsilon-Near-Zero Channel

Mitrović, Marija; Jokanovic, Branka; Vojnovic, Nebojsa

doi:10.1109/lawp.2013.2261046

Cited by 19 publications

(11 citation statements)

References 10 publications

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“…4(c). A parallel capacitance C is introduced to model the E-step discontinuity between the free space and the channel, while a parallel inductance L is used to model the H-step discontinuity [25]. The channel is modeled as a transmission line section with propagation constant in Eq.…”

Section: Transmission Path Based On Enz Tunneling Channelsmentioning

confidence: 99%

Ultrathin and Simple Frequency Selective Rasorber Based on Ferrite Absorber with Embedded Epsilon-Near-Zero Tunneling Channels

Zhong¹,

Feng²,

Zheng³

et al. 2021

Preprint

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An ultrathin and simple frequency-selective rasorber (FSR) with a passband located within a wide absorption band is proposed. The ultrawide absorption band is obtained by employing commercial magnetic materials in the absorption channel and the passband is realized using epsilon-near-zero (ENZ) tunneling waveguides. The attractively ultrathin and simple feature is achieved by utilizing tunneling effect at the cutoff frequency of metallic waveguides with arbitrary length, permitting the overall thickness shrink into to the same as that of the absorber.

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Section: Transmission Path Based On Enz Tunneling Channelsmentioning

confidence: 99%

Ultrathin and Simple Frequency Selective Rasorber Based on Ferrite Absorber with Embedded Epsilon-Near-Zero Tunneling Channels

Zhong¹,

Feng²,

Zheng³

et al. 2021

Preprint

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“…Microwave metamaterials exhibit unusual electromagnetic properties (such as negative permittivity and negative permeability) which yield a range of unusual phenomena. One such phenomenon is the tunneling of electromagnetic waves through epsilon-near-zero (ENZ) metamaterial [1][2][3][4][5], epsilon-negative (ENG) metamaterial (or empty waveguides operated at cut-off) paired with mu-negative (MNG) metamaterial [6][7][8][9][10][11][12][13][14][15], and cut-off waveguides either filled [16,17], or lined [18,19], with metamaterials. In this work, we are specifically interested in tunneling in a microwave waveguide filled by a ENG/MNG metamaterial heterojunction where the waveguide is cut-off when loaded by either the ENG or MNG metamaterial on its own [7,14].…”

Section: Introductionmentioning

confidence: 99%

Identifying Near-Perfect Tunneling in Discrete Metamaterial Loaded Waveguides

Eccleston

Platt

2019

Electronics

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Mu-negative and epsilon-negative loaded waveguides taken on their own are nominally cut-off. In ideal circumstances, and when paired in the correct proportions, tunneling will occur. However, due to losses and constraints imposed by finite-sized constituent elements, the ability to experimentally demonstrate tunneling may be hindered. A tunnel identification method has been developed and demonstrated to reveal tunneling behavior that is otherwise obscured. Using ABCD (voltage-current transmission) matrix formulation, the S-parameters of the mu-negative/epsilon-negative loaded waveguide junction is combined with S-parameters of an epsilon-negative loaded waveguide. The method yields symmetric scattering matrices, which allows the effect of losses to be removed to provide yet clearer identification of tunneling.

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“…ENZ waveguide can find many applications such as dielectric permittivity measurement, filter design, etc. In [5] a first-order single band filter is designed and in [6] a dual-band filter is given using ENZ waveguide. A tunable second-order filter based on ENZ waveguide is given in [7].…”

Section: Introductionmentioning

confidence: 99%

A Mixed Resonating Modes Filter with Enhanced Stopband Performance

He¹,

Zhong²,

Qu³

2018

Proceedings of the 2018 International Conference on Network, Communication, Computer Engineering (NCCE 2018)

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In this paper, a filter of order five with enhanced stopband performance using mixed mode resonators is designed. Using different resonating mode resonators is to obtain different harmonic frequencies so that harmonics of the designed filter could be suppressed while keeping the same dominant frequency unchanged. Three different resonating modes are used in the filter design, including zero-order resonating mode inspired by epsilon-near-zero waveguide. The input and output ports are also properly designed to suppress some of the unwanted harmonics, improving the stoband performance further. Simulated results show that the designed filter has good performances.

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Wideband Tuning of the Tunneling Frequency in a Narrowed Epsilon-Near-Zero Channel

Cited by 19 publications

References 10 publications

Ultrathin and Simple Frequency Selective Rasorber Based on Ferrite Absorber with Embedded Epsilon-Near-Zero Tunneling Channels

Ultrathin and Simple Frequency Selective Rasorber Based on Ferrite Absorber with Embedded Epsilon-Near-Zero Tunneling Channels

Identifying Near-Perfect Tunneling in Discrete Metamaterial Loaded Waveguides

A Mixed Resonating Modes Filter with Enhanced Stopband Performance

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