Design and analysis of a novel tunable Ferrite based left handed strip line

Ghalibafan, Javad; Komjani, N.; Rejaei, B.

doi:10.1080/09205071.2012.710374

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…To date, research on magnetic-hybrid metamaterials has focused, primarily, on coupling ohmic metamaterials, such as copper split-ring resonators (SRR), with the ferromagnetic resonance (FMR) of ferrites [8][9][10][11][12][13][14][15][16][17][18][19] . In general, this work has been performed largely using magnetically isotropic ferrites such as yttrium iron garnet (YIG), notable for their widespread use in microwave electronics and low-loss magnetic resonance behavior 9,18,19 .…”

Section: Introductionmentioning

confidence: 99%

Angular Control of a Hybrid Magnetic Metamolecule Using Anisotropic FeCo

et al. 2015

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By coupling magnetic elements to metamaterials, new hybrid metamolecules can be created with interesting properties such as photo-magnon coupling. Here, we present results for a hybrid metamolecule, using a hard as opposed to soft magnetic material. This was achieved by placing a thin film of single crystal hard FeCo in close proximity to a split ring resonator (SRR). To suppress eddy-current shielding the FeCo film was patterned into 100 µm disks. The resulting metamolecule exhibits photon-magnon coupling when the FeCo is on resonance (FMR). Three new features are demonstrated and discussed. One, hard magnets allow FMR to be performed in near zero field, thereby partially eliminating the need for applied fields. Two, because the FMR is anisotropic, angular control over hybrid SRR/FMR resonances is achieved. Three, the single crystal FeCo can be re-magnetized parallel/perpendicular to the plane of the SRR, in real time, thus opening the door to magnetically configurable metamaterials. Finally, the work was performed using coplanar waveguide (CPW) excitation. A study was made therefore of how best to excite the numerous transverse magnetic (TM) and transverse electric (TE) modes of the SRR, using near-field CPWexcitation. Such detail is important, if the strongest signals are to be achieved. Photon-magnon coupling strengths of up to 5% are demonstrated.

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Section: Introductionmentioning

confidence: 99%

Angular Control of a Hybrid Magnetic Metamolecule Using Anisotropic FeCo

et al. 2015

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“…To date magnetic hybrid metamaterial research has focussed on coupling ohmic metamaterial structures with resonant magnetic material [12,[23][24][25][26][27][28][29][30]. This work has been performed using ferrites, predominantly the ferrimagnetic material yttrium iron garnet (YIG), notable for its low-loss magnetic resonance behaviour and wide use in microwave electronics [23,31,32].…”

Section: Introductionmentioning

confidence: 99%

Giant magnetic modulation of a planar, hybrid metamolecule resonance

et al. 2014

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Coupling magnetic elements to metamaterial structures creates hybrid metamolecules with new opportunities. Here we report on the magnetic control of a metamolecule resonance, by utilizing the interaction between a single split ring resonator (SRR) and a magnetic thin film of permalloy. To suppress eddy current shielding, the permalloy films are patterned into arrays of 30-500 μm diameter discs. Strong hybridized resonances were observed at the anticrossing between the split ring resonance and the ferromagnetic resonance (FMR) of the permalloy. In particular, it is possible to achieve 40 dB modulation of the electric (symmetric) mode of the SRR on sweeping the applied magnetic field through the SRR/FMR anticrossing. The results open the way to the design of planar metamaterials, with potential applications in nonlinear metamaterials, tunable metamaterials and spintronics.

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“…[15][16][17] In this paper for the first time a nonreciprocal magnet-less left-handed media in microstrip technology is proposed. In comparison with other nonreciprocal left-handed microstrip lines, this structure doesn't need permanent magnet so it is smaller, its implementation is cheaper and it is fully compatible with integrated circuit technology.…”

Section: Introductionmentioning

confidence: 99%

A novel nonreciprocal magnetless left-handed microstrip line

Tehrani

Hojjat-Kashani

Tayarani

2014

2014 22nd Iranian Conference on Electrical Engineering (ICEE)

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Combining traveling-wave ring resonators and microstrip inductors in a planar microstrip line circuit, negative values of electric permittivity and magnetic permeability can be obtained. This phenomenon arises from negative permeability of the traveling-wave ring resonators and negative permittivity due to the behavior of shorted stubs within the rejected frequency band. Thanks to the nonreciprocal behavior of the travelingwave ring resonators we can achieve 16 dB isolation between s21 and s12 in the left-handed region. Therefore, a novel approach is presented here to synthesize a nonreciprocal magnetless lefthanded media in microstrip technology. Full wave simulation results confirm the left-handed behavior of the interaction. The concept can be extended to active nonreciprocal network.

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Design and analysis of a novel tunable Ferrite based left handed strip line

Cited by 3 publications

References 18 publications

Angular Control of a Hybrid Magnetic Metamolecule Using Anisotropic FeCo

Angular Control of a Hybrid Magnetic Metamolecule Using Anisotropic FeCo

Giant magnetic modulation of a planar, hybrid metamolecule resonance

A novel nonreciprocal magnetless left-handed microstrip line

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