Transmission line models for negative refractive index media and associated implementations without excess resonators

Eleftheriades, George V.; Siddiqui, Omar; Iyer, Ashwin K.

doi:10.1109/lmwc.2003.808719

Cited by 224 publications

(194 citation statements)

References 8 publications

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“…So, innovative microwave devices (filter, antenna, power divider, coupler…) were designed [65][66][67][68]. At the beginning, the LH-circuits were inspired thanks to the analogy with the metamaterials susceptible to operate with negative phase-and/or group-velocities [69][70][71]. Contrarily to the classical transmission lines which are categorized as right-handed (RH) structures, these LH circuits exhibit positive phase values in certain frequency bands.…”

Section: Lc-effect Cancellation With Lh Active Circuitsmentioning

confidence: 99%

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects

Ravelo

2013

AEM

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This paper focus is on the neutralization technique of the unwanted parasitic effects on radio frequencies (RF) and digital electronic circuits. Most of parasitic effects induced in these circuits can be modeled by RC-and LC-networks. For canceling these disturbing effects, we can proceed with operation as transfer function neutralization in the considered operating frequency bands. The neutralization presented in this paper is developed by using first, a lefthanded (LH) and negative group delay (NGD) circuits inspired from metamaterials. The theoretical approach illustrating the RC-and LC-effects neutralization is described. Synthesis relations enabling to determine the elements of required LH and NGD circuit correctors in function of the perturbation parameters are established. Numerical and experimental demonstrators are presented to validate the technique proposed.

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Section: Lc-effect Cancellation With Lh Active Circuitsmentioning

confidence: 99%

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects

Ravelo

2013

AEM

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“…A simplified version of Equation (2), which gives more insight into the resonance behavior of the structure can be obtained by assuming the intrinsic and Bloch phase shift (θ B ≈ Kd) per unit cell to be much less than unity (βd and kd 1) [8]:…”

Section: The Design Approachmentioning

confidence: 99%

“…But later with the application of negative refraction in other technologies, the scope of the term 'metamaterial' has been expanded to also represent other artificial structures such as loaded transmission-line (TL) media [6] and photonic crystals [7]. The TLmetamaterials are based on the equivalent circuit of the split-ring and thin-wire metamaterial [8]. Therefore, when extended to twoor three-dimension configurations, TL-metamaterials also demonstrate sub-diffraction focusing properties [9,10].…”

Section: Introductionmentioning

confidence: 99%

A Harmonic-Suppressed Microstrip Antenna Using a Metamaterial-Inspired Compact Shunt-Capacitor Loaded Feedline

Siddiqui¹,

Mohra²

2013

PIER C

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Abstract-This paper presents a novel method to suppress the higher order harmonics in the microstrip patch antennas. A practical 0.75 GHz microstrip patch antenna is fed with a quarter-wave feedline designed by exploiting the dispersion properties of shunt-capacitorloaded transmission-line metamaterials. It is shown that two higher order harmonic modes at 1.25 and 1.5 GHz are completely eliminated. In addition, there is about a one-fourth reduction in the length of the impedance matching quarter-wave feedline.

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“…Such equivalent circuit has been then extended to composite right/left handed (CRLH) metamaterials [9]. A more complex unit cell of the equivalent line circuit of a metamaterial constituted by a split-ring resonator/wire medium is presented [10]. Two-dimensional (2-D) composite right/left handed transmission lines (CRLH-TLs) have been presented [11,12].…”

Section: Introductionmentioning

confidence: 99%

A General Framework for the Analysis of Metamaterial Transmission Lines

Antonini¹

2010

PIER B

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Abstract-This paper presents a closed-form analysis of composite right/left handed transmission lines. The ladder network structure of the transmission line allows to obtain a rational form of any twoport network representation. As a consequence of the rational form of the transfer functions, poles and residues are easily computed and the dominant ones selected leading to an efficient time-domain macromodel. The numerical results confirm the robustness and the accuracy of the proposed method in capturing the physics of composite right/left handed transmission lines.

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Transmission line models for negative refractive index media and associated implementations without excess resonators

Cited by 224 publications

References 8 publications

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects

A Harmonic-Suppressed Microstrip Antenna Using a Metamaterial-Inspired Compact Shunt-Capacitor Loaded Feedline

A General Framework for the Analysis of Metamaterial Transmission Lines

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