Magnetostatic wave devices and applications (invited)

Sethares, J.C.

doi:10.1063/1.330926

Cited by 40 publications

(8 citation statements)

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“…The wavelet transform of signal f (t) is [6][7][8][9][10][11][12][13][14]. When s = 2 k , the wavelet function shown in (3) is converted into the Morlet dyadic wavelet function [6][7][8][9][10][11][12].…”

Section: Implementation Schemes Of a Single-scale Wavelet Transform Pmentioning

confidence: 99%

“…Through analysis and research we found that , as long as the input transducer of MSSW device is designed according to a scale wavelet function shown in the formula (4), a single-scale wavelet transform processor using a MSSW device can be implemented. We know from [6][7][8][9][10][11][12] that a single-scale wavelet transform processor using the Morlet wavelet function can be used as a band-pass filter. When k is 13, the scale s is equal to 1.492 -13 , so the wavelet function for the scale 1.…”

Section: Implementation Schemes Of a Single-scale Wavelet Transform Pmentioning

confidence: 99%

“…The wavelet transform processor and wavelet inverse-transform processor that use SAW devices can benefit from the excellent properties of the SAW devices: passive, small size, low cost, excellent temperature stability, high reliability and reproducibility, which overcome the complicated algorithms and high power for VLSI, and big size and low reproducibility for optical devices, but in microwave band, the propagation losses of the wavelet transform processor and wavelet inverse-transform processor using SAW devices are very high, and their transducer fabrication is also difficult [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solution of Some Problems oOf Single-Scale Wavelet Transform Processor Using a Magnetostatic Surface Wave Device

Lu¹,

Kuang²,

Lü³

et al. 2012

Metrology and Measurement Systems

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In this paper, we investigate the implementation schemes of a single-scale wavelet transform processor using magnetostatic surface wave (MSSW) devices. There are three implementation schemes: the interdigital transducer, the meander line transducer and the grating transducer. Because the interdigital transducer has excellent properties, namely, good frequency characteristic and low insertion loss, we use the interdigital transducer as the implementation scheme of a single-scale wavelet transform processor using MSSW device. In the paper, we also present the solutions to the three key problems: the direct coupling between the input transducer and the output transducer, the insertion loss, and the loss characteristics of the gyromagnetic film having an influence on the wavelet transform processor. There are two methods of reducing the direct coupling between the input transducer and the output transducer: increasing the distance between the input transducer and the output transducer, and placing a metal “wall” between the input transducer and the output transducer. There also are two methods of reducing the insertion loss of a single-scale wavelet transform processor using a MSSW device for scale: the appropriate thickness of the yttrium iron garnet (YIG) film and the uniform magnetic field.The smaller the ferromagnetic resonance linewidth of the gyromagnetic film , the smaller the magnetostatic wave propagation loss.

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Section: Implementation Schemes Of a Single-scale Wavelet Transform Pmentioning

confidence: 99%

Section: Implementation Schemes Of a Single-scale Wavelet Transform Pmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Solution of Some Problems oOf Single-Scale Wavelet Transform Processor Using a Magnetostatic Surface Wave Device

Lu¹,

Kuang²,

Lü³

et al. 2012

Metrology and Measurement Systems

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“…Practically, this scheme of delaying feedback can be realized, for example, with the help of delay lines on magnetostatic waves 47,48 or acoustic waves. When the stabilization regime takes place and the system is exactly in the equilibrium state, the feedback signal f fb could by compared with the noise level.…”

Section: Stabilization Of Unstable Equilibrium Spatial State Witmentioning

confidence: 99%

Controlling chaos in spatially extended beam-plasma system by the continuous delayed feedback

Hramov

Короновский

Rempen

2006

Chaos: An Interdisciplinary Journal of Nonlinear Science

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In this paper we discuss the control of complex spatio-temporal dynamics in a spatially extended nonlinear system (fluid model of Pierce diode) based on the concepts of controlling chaos in the systems with few degrees of freedom. A presented method is connected with stabilization of unstable homogeneous equilibrium state and the unstable spatio-temporal periodical states analogous to unstable periodic orbits of chaotic dynamics of the systems with few degrees of freedom. We show that this method is effective and allows to achieve desired regular dynamics chosen from a number of possible in the considered system.

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“…This enables engineering of arbitrary band structures for carrier signals in the several-GHz range. These unique properties have been widely used to design passive radio frequency elements, including tunable filters 3 and delay lines 4 . However, the most important feature of SWs is their propagation without charge transport.…”

mentioning

confidence: 99%

Demonstration of a robust magnonic spin wave interferometer

Kanazawa

Goto

Sekiguchi

et al. 2016

Sci Rep

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Magnonics is an emerging field dealing with ultralow power consumption logic circuits, in which the flow of spin waves, rather than electric charges, transmits and processes information. Waves, including spin waves, excel at encoding information via their phase using interference. This enables a number of inputs to be processed in one device, which offers the promise of multi-input multi-output logic gates. To realize such an integrated device, it is essential to demonstrate spin wave interferometers using spatially isotropic spin waves with high operational stability. However, spin wave reflection at the waveguide edge has previously limited the stability of interfering waves, precluding the use of isotropic spin waves, i.e., forward volume waves. Here, a spin wave absorber is demonstrated comprising a yttrium iron garnet waveguide partially covered by gold. This device is shown experimentally to be a robust spin wave interferometer using the forward volume mode, with a large ON/OFF isolation value of 13.7 dB even in magnetic fields over 30 Oe.A spin wave (SW) is a radio frequency (rf) collective excitation of the magnetic moments in a magnetic material, a magnetic counterpart of elastic waves. The transmission properties of SWs can be extensively modulated depending on the strength of the bias magnetic field, the waveguide material and the geometry 1,2 . This enables engineering of arbitrary band structures for carrier signals in the several-GHz range. These unique properties have been widely used to design passive radio frequency elements, including tunable filters 3 and delay lines 4 . However, the most important feature of SWs is their propagation without charge transport. Thus SWs have attracted attention because they offer a new paradigm for information processing in which Joule loss and its accompanying heat generation is expected to be extremely small. Therefore, SWs could be used to represent information in beyond-CMOS devices 5 . To develop logic circuits based on SWs, active control of SW flow is required. Recently, a variety of systems showing spin dynamic effects 6-12 and artificially designed structures [13][14][15][16][17][18] manipulating the local magnetic moments have been investigated. These novel systems have motivated the creation of magnonics as a research field that addresses transport, storage and processing information using SWs 19,20 . A significant feature of SWs compared to other information carriers is the usefulness of their phase information, which can be easily manipulated in logic operations. Therefore a SW interferometer is an essential component for realization of logic devices [21][22][23] . Yttrium iron garnet (YIG) is suitable for SW waveguides because of its low magnetic damping and low out-of-plane saturation magnetic field [24][25][26][27][28] . Magnons can therefore conserve their phase information over long distances in a YIG waveguide. Yu et al. recently experimentally observed SW propagation over 600 μm using a 20 nm-thick YIG waveguide with in-plane magnetization 29...

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Magnetostatic wave devices and applications (invited)

Cited by 40 publications

References 0 publications

Solution of Some Problems oOf Single-Scale Wavelet Transform Processor Using a Magnetostatic Surface Wave Device

Solution of Some Problems oOf Single-Scale Wavelet Transform Processor Using a Magnetostatic Surface Wave Device

Controlling chaos in spatially extended beam-plasma system by the continuous delayed feedback

Demonstration of a robust magnonic spin wave interferometer

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