Exciting High Frequency Oscillations in a Coaxial Transmission Line with a Magnetized Ferrite

Ahn, Jinhong; Karelin, S. Yu.; Kwon, H.-O.; Magda, I. I.; Sinitsin, V. G.

doi:10.4283/jmag.2015.20.4.460

Cited by 13 publications

(21 citation statements)

References 4 publications

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“…The physical effects leading to direct conversion of short carrier-free electric pulses into radio frequency oscillations have been a subject of intense studies for quite a long time [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In fact, this possibility stands out as a real achievement in the field of high power electronics, reached over the few past decades.…”

Section: Introductionmentioning

confidence: 99%

“…Later on, the interest shifted toward a different, related effect, namely excitation of intense radio frequency oscillations as a result of passage of the EMSW through the NLTL. That could be observed both in lumped parameter lines containing discrete components with some kind of nonlinear behavior [3], and in waveguides filled with a ferromagnetic material [6][7][8][9][10][11][12][13][14][15]. In the first case, the possibility of varying the lumped element parameters over a wide range enabled provision of a velocity synchronism between the EMSW and the fundamental or higher-order spatial harmonic of the periodic inductance-capacitor system, i.e., v sh ≈ v ph .…”

Section: Introductionmentioning

confidence: 99%

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Radio Frequency Oscillations in Gyrotropic Nonlinear Transmission Lines

Karelin

Krasovitsky

Magda

et al. 2019

Plasma

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The paper considers the quasi-monochromatic radio frequency oscillations that are observable in transmission lines of doubly connected cross-sections, partially filled with a magnetized ferrite. The frequencies and amplitudes of the oscillations appearing under the impact of short carrier-free electric pulses are determined by dispersive and non-linear properties of the line's structure. The dispersion characteristics are governed by the geometry and size of the line and the spatial arrangement in the line of the ferromagnetic material with its intrinsic dispersion. The dependences shown by the oscillation parameters in real physical experiments are reproduced and analyzed via numerical simulation within models which account separately for different physical properties of the material and the structure.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Radio Frequency Oscillations in Gyrotropic Nonlinear Transmission Lines

Karelin

Krasovitsky

Magda

et al. 2019

Plasma

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“…The experimental parameters are shown in Table 1 were as follows [6,7]. The carrier-free voltage pulses fed to the ferrite-filled NLTL to drive magnetic moment precession, varied in peak magnitude between 50 kV and 150 kV, giving rise to output pulses with a much shorter front edge (< 0.5 ns) and a few quasi-periods of decaying RF oscillations of peak amplitude 10 kV to 17 kV.…”

Section: Rf Oscillations In the Ferrite-filledmentioning

confidence: 99%

“…Despite the impressive history of NLTL studies [1][2][3][4][5][6][7], experiments on extracting and radiating the intense RF signals have been detailed in just a few papers, e.g. [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Wideband RF Radiation from a Nonlinear Transmission Line with a Pre-magnetized Ferromagnetic Core

Ahn¹,

Karelin²,

Krasovitsky³

et al. 2016

Journal of Magnetics

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Experimental results and data of numerical simulations are presented, concerning generation of wideband radio frequency (RF) oscillations in a nonlinear transmission line (NLTL) which contains a pre-magnetized core of ferrite material. Emphasis is made on the means for extracting the RF signal from the line, in order to radiate it into free space. Antennas of two types that can be used for the purpose are considered, both featuring a coaxial design. This permits availing of the principal advantages of coaxial systems, such as operation in the mode of a traveling TEM wave; wide range of the transmitted frequencies, and a reasonably simple design. The antennas studied, specifically a disc-cone dipole (DCD) and an impulse reflector antenna ('Half-IRA', or HIRA type) differ significantly in effective width of the radiated spectrum and in spatial characteristics of the radiated field in far region.

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Perspective: Strong microwave photon-magnon coupling in multiresonant dielectric antennas

Maksymov

2018

Journal of Applied Physics

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Achieving quantum-level control over electromagnetic waves, magnetisation dynamics, vibrations and heat is invaluable for many practical application and possible by exploiting the strong radiation-matter coupling. Most of the modern strong microwave photon-magnon coupling developments rely on the integration of metal-based microwave resonators with a magnetic material. However, it has recently been realised that all-dielectric resonators made of or containing magneto-insulating materials can operate as a standalone strongly-coupled system characterised by low dissipation losses and strong local microwave field enhancement. Here, after a brief overview of recent developments in the field, I discuss examples of such dielectric resonant systems and demonstrate their ability to operate as multiresonant antennas for light, microwaves, magnons, sound, vibrations and heat. This multiphysics behaviour opens up novel opportunities for the realisation of multiresonant coupling such as, for example, photon-magnon-phonon coupling. I also propose several novel systems in which strong photon-magnon coupling in dielectric antennas and similar structures is expected to extend the capability of existing devices or may provide an entirely new functionality. Examples of such systems include novel magnetofluidic devices, high-power microwave power generators, and hybrid devices exploiting the unique properties of electrical solitons.

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Exciting High Frequency Oscillations in a Coaxial Transmission Line with a Magnetized Ferrite

Cited by 13 publications

References 4 publications

Radio Frequency Oscillations in Gyrotropic Nonlinear Transmission Lines

Radio Frequency Oscillations in Gyrotropic Nonlinear Transmission Lines

Wideband RF Radiation from a Nonlinear Transmission Line with a Pre-magnetized Ferromagnetic Core

Perspective: Strong microwave photon-magnon coupling in multiresonant dielectric antennas

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