Insertion loss of magnetostatic surface wave delay lines

Bajpai, S. N.; Carter, R.L.; Owens, J.M.

doi:10.1109/22.3492

Cited by 15 publications

(11 citation statements)

References 12 publications

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“…Although the macroscopic propagation loss of the spin wave was obtained as the value proportional to the linewidth of YIG, 13 the microscopic propagation loss should be obtained by an analysis using a model that made the CNTs and a ferrite film live together in an atomic scale. The analysis in the atomic scale is one of our future subjects.…”

Section: Possible Applicationmentioning

confidence: 99%

Electronic transport in carbon nanotubes using the transfer-matrix method

Umegaki

Ogawa

Makino

et al. 2004

Journal of Applied Physics

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We have studied the basic conductive characteristics in carbon nanotubes (CNTs) for the purpose of application to a high-frequency device. In the analysis, the current flow in the CNTs is viewed as the quantum transport of electronic waves. First, we analyzed the dispersion relations of electronic waves in the CNTs based on the linear combination of atomic orbitals expansion method. In addition, we investigated the current-density distributions around the circumference of the CNTs and the current-voltage characteristics by using the transfer-matrix method. As a result, the current distributions were found to be significantly controlled by both the chirality of the CNTs and the position of the current sources around the circumference. Based on these results, we propose herein a ferrite device that acts as a filter in the terahertz frequency domain. In this device, the high-frequency current flowing on the CNTs may excite and receive directly the spin waves in the ferrite film beneath them, and the operating wavelength may be controlled by means of the chirality via the current-density distributions on the CNTs. In addition, we found that the performance of the device can be improved by using the p-type CNTs as the excitation electrodes rather than the intrinsic CNTs.

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Section: Possible Applicationmentioning

confidence: 99%

Electronic transport in carbon nanotubes using the transfer-matrix method

Umegaki

Ogawa

Makino

et al. 2004

Journal of Applied Physics

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“…Emtage reported a derivation based on surface permeabilities 38 whereas Kalinikos introduced a Green's function method to determine the spin-wave power and impedance. 39 Also nonuniform current densities were considered, [40][41][42][43][44] as well as finite dimensions of the magnetic medium. 3,39,40,42,45 Furthermore, the spin-wave radiation impedance has also been derived for forward volume spin waves 3,38,39,[44][45][46][47][48] as well as backward volume waves.…”

Section: Introductionmentioning

confidence: 99%

“…39 Also nonuniform current densities were considered, [40][41][42][43][44] as well as finite dimensions of the magnetic medium. 3,39,40,42,45 Furthermore, the spin-wave radiation impedance has also been derived for forward volume spin waves 3,38,39,[44][45][46][47][48] as well as backward volume waves. 3,43,44,46,48,49 Nevertheless, all these approaches require numerical methods to find the impedance and do not allow for simple approximate expressions that can be implemented in electrical models and equivalent circuits.…”

Section: Introductionmentioning

confidence: 99%

Lumped circuit model for inductive antenna spin-wave transducers

Vanderveken¹,

Tyberkevych²,

Talmelli³

et al. 2021

Preprint

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We derive a lumped circuit model for inductive antenna spin-wave transducers in the vicinity of a ferromagnetic medium. The model considers the antenna's Ohmic resistance, its inductance, as well as the additional inductance due to the excitation of ferromagnetic resonance or spin waves in the ferromagnetic medium. As an example, the additional inductance is discussed for a wire antenna on top of a ferromagnetic waveguide, a structure that is characteristic for many magnonic devices and experiments. The model is used to assess the scaling properties and the energy efficiency of inductive antennas. Issues related to scaling antenna transducers to the nanoscale and possible solutions are also addressed.

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“…In the literature, some authors have dealt with the calculation of the insertion loss of MSSW transducers and have published some papers on the issue [2], [3], [4]. In all these works, the insertion loss is computed by numerically integrating the Poynting vector in an infinite domain.…”

Section: Introductionmentioning

confidence: 99%

A new method for the computation of the insertion loss of magnetostatic-surface wave transducers

Freire

Marqués

Medina

2003

33rd European Microwave Conference, 2003

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A method is shown for the computation of the insertion loss of magnetostatic-surface wave transducers. In the first step of the method, a closed-form expression is derived for the solution of the telegrapher's equations for the microstrip transducers. The insertion loss is then obtained from this solution as a function of three transmission line parameters, i. e., the propagation constant and the characteristic impedance of the YIG-loaded microstrip line and the mutual inductance between the two microstrips. In the second step, these transmission line parameters are numerically computed by applying a full-wave method of moments technique. The theoretical results obtained have been found to be in good agreement with experimental results.

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Insertion loss of magnetostatic surface wave delay lines

Cited by 15 publications

References 12 publications

Electronic transport in carbon nanotubes using the transfer-matrix method

Electronic transport in carbon nanotubes using the transfer-matrix method

Lumped circuit model for inductive antenna spin-wave transducers

A new method for the computation of the insertion loss of magnetostatic-surface wave transducers

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