Reciprocal and Nonreciprocal Modes of Propagation in Ferrite Stripline and Microstrip Devices

Hines, M.E.

doi:10.1109/tmtt.1971.1127545

Cited by 212 publications

(55 citation statements)

References 7 publications

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“…The nonreciprocity measured in this paper is traced back to the edge-guide mode [29]. Magnetic nanowires placed at the gap between the signal and ground lines of the CPW [30] and nanowires with different heights underneath the CPW [31] show a nonreciprocal transmission.…”

Section: Cpw Fmr Of the Control Py Ringsmentioning

confidence: 99%

Microwave Spectroscopy of a Single Permalloy Chiral Metamolecule on a Coplanar Waveguide

et al. 2018

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We investigate the microwave spectroscopies of a micrometer-sized single permalloy (Py) chiral structure on coplanar waveguides (CPWs). Under an external dc magnetic field applied in a direction perpendicular to the microwave propagation, the Py chiral structure loaded on the center of the CPW signal line shows Kittel-mode ferromagnetic resonance. Contrastingly, the structure on the signal-line edge highlights two additional resonances: spin-wave resonance at a higher frequency, and unique resonance at a lower frequency of approximately 7.8 GHz. The resonance signal at 7.8 GHz originates from magnetically induced, geometry-driven resonance, although the resonance frequency does not depend on the external magnetic field. Moreover, the displacement of the Py structures on the signal line results in nonreciprocal microwave transmission, which is traced back to the edge-guide mode.

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Section: Cpw Fmr Of the Control Py Ringsmentioning

confidence: 99%

Microwave Spectroscopy of a Single Permalloy Chiral Metamolecule on a Coplanar Waveguide

et al. 2018

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“…It is well-known that the quasi-TE edge-guided modes [20] are dominant along the normally magnetized ferrite microstrip line. The waves propagate in opposite directions along opposite side walls below the strip edge, which is depicted in Fig.…”

Section: Nonreciprocal Edge-guided Modesmentioning

confidence: 99%

“…However, in the reciprocal section without stubs, Y 1 = Y 2 = 0. Then, (3) reduces to γ = ± j(ω/c) √ με r which is well-known edge-guided mode [20].…”

Section: Dispersion Relationsmentioning

confidence: 99%

Mode Analysis of Phase-Constant Nonreciprocity in Ferrite-Embedded CRLH Metamaterials

Porokhnyuk

Ueda

Kado

et al. 2013

IEICE Trans. Electron.

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SUMMARYPhase-nonreciprocal ε-negative and CRLH metamaterials are analyzed using a new approach in which field analysis and transmission line model are combined. The examined one-dimensional nonreciprocal metamaterials are composed of a ferrite-embedded microstrip line periodically loaded with shunt stubs. In the present approach, the phase constant nonreciprocity is analytically estimated and formulated under the assumption of operating frequency far above the ferromagnetic resonant frequency. The present approach gives a good explanation to the phenomenon in terms of ferromagnetic properties of the ferrite and asymmetric geometry of the metamaterial structure, showing a good agreement with numerical simulations and experiment. key words: metamaterials, leaky-wave antennas, electromagnetic analysis, transmission line matrix methods, beam steering, ferrite devices

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“…2(b)). This is done to avoid the fringing field effects (edge effects) at both sides of the strip [6]. With these conditions in mind it is assumed that the energy is confined between the ground planes and the strip.…”

Section: A Measurement Cellmentioning

confidence: 99%

Generalized Measurement Method for the Determination of the Dynamic Behavior of Magnetic Materials in Any Magnetization State

2010

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A broad-band characterization method based on the junction of the full-wave analysis of a nonreciprocal strip transmission line with a predictive permeability tensor model is presented. The aim of this method is the direct measurement of the permeability tensor components spectra of magnetized thick samples, whatever their magnetization state is. The propagation constants of the dominant transverse electromagnetic (TEM) and higher order modes inside the measurement cell are obtained along with its scattering parameters (S-parameters). The apparition of magnetostatic modes and the nonreciprocal nature of the structure are probed. Procedures based on the use of this method to find accurate values of gyromagnetic resonance and the resonance line width (1 ) are proposed. The direct analysis is validated by comparison of the calculated S-parameters with those obtained with an electromagnetic field simulator based on finite element methods (FEM).

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Reciprocal and Nonreciprocal Modes of Propagation in Ferrite Stripline and Microstrip Devices

Cited by 212 publications

References 7 publications

Microwave Spectroscopy of a Single Permalloy Chiral Metamolecule on a Coplanar Waveguide

Microwave Spectroscopy of a Single Permalloy Chiral Metamolecule on a Coplanar Waveguide

Mode Analysis of Phase-Constant Nonreciprocity in Ferrite-Embedded CRLH Metamaterials

Generalized Measurement Method for the Determination of the Dynamic Behavior of Magnetic Materials in Any Magnetization State

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