Preliminary results on the Multipactor effect prediction in RF components with ferrites

Semenov, V. E.; Rakova, E.; Belhaj, Mohamed; Puech, J.; Lisak, M.; Rasch, Joel; Laroche, Eric

doi:10.1109/ivec.2013.6571019

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Recently, some studies have focused their attention to the case wherein dielectric surfaces are involved [7]- [9]. However, very little literature about multipactor effect in devices containing ferrites can be found [10], [11]. Ferrites are ferromagnetic materials which exhibit magnetic anisotropy when are brought under a DC magnetic bias field.…”

Section: Analysis Of Multipactor Rf Breakdown In a Waveguide Containimentioning

confidence: 99%

Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite

Gonzalez-Iglesias

Gómez

Gimeno

et al. 2016

IEEE Trans. Electron Devices

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In this paper, the multipactor RF breakdown in a parallel-plate waveguide partially filled with a ferrite slab magnetized normal to the metallic plates is studied. An external magnetic field is applied along the vertical direction between the plates in order to magnetize the ferrite. Numerical simulations using an in-house 3D code are carried out to obtain the multipactor RF voltage threshold in this kind of structures. The presented results show that the multipactor RF voltage threshold at certain frequencies becomes considerably lower than for the corresponding classical metallic parallel-plate waveguide with the same vacuum gap.

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Section: Analysis Of Multipactor Rf Breakdown In a Waveguide Containimentioning

confidence: 99%

Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite

Gonzalez-Iglesias

Gómez

Gimeno

et al. 2016

IEEE Trans. Electron Devices

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“…However, realistic nonreciprocal microwave components (e.g. isolators and circulators) involve inhomogeneous EM fields, complex material behavior, and the presence of a permanent magnetostatic field that affects the electron dynamics [17]. As a consequence, a more sophisticated approach is required in order to obtain accurate simulations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of Multipactor Effect for Ferrite Materials Used in L- and S-Band Nonreciprocal Microwave Components

Vague

Melgarejo

Boria

et al. 2019

IEEE Trans. Microwave Theory Techn.

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This paper reports on the experimental measurement of power threshold levels for the multipactor effect between samples of ferrite material typically used in the practical implementation of Land S-bands circulators and isolators. For this purposes, a new family of wide-band, non-reciprocal rectangular waveguide structures loaded with ferrites has been designed with a full-wave electromagnetic simulation tool. The design includes also the required magneto-static field biasing circuits. The multipactor breakdown power levels have also been predicted with an accurate electron tracking code using measured values for the Secondary Electron Yield (SEY) coefficient. The measured results agree well with simulations thereby fully validating the experimental campaign.

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“…Therefore, previous multipactor studies are not useful to predict the discharge on devices involving ferrites. However, to the authors' knowledge, very few contributions about multipactor on ferrite materials can be found [17]. In this paper, we are interested on the multipactor analysis of a metallic parallel-plate waveguide partially filled with a ferrite slab, placed just above the metal bottom wall, and transversally magnetized by a static (DC) magnetic field parallel to the waveguide walls (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Multipactor Effect in a Parallel-Plate Waveguide Partially Filled With Magnetized Ferrite

Gonzalez-Iglesias

Gimeno

Boria

et al. 2014

IEEE Trans. Electron Devices

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Gimeno Martinez, B.; Boria Esbert, VE.; Gómez, Á.; Vegas, Á. (2014). Multipactor effect in a parallel-plate waveguide partially filled with magnetized ferrite. IEEE Transactions on Electron Devices. 61(7):Abstract-The aim of this paper is the analysis of the multipactor effect in a parallel-plate waveguide when a ferrite slab, transversally magnetized by a static magnetic field parallel to the waveguide walls, is present. Employing an in-house developed code, numerical simulations are performed in order to predict the multipactor RF voltage threshold in such a ferrite-loaded waveguide. Variations of the ferrite magnetization field strength and the ferrite slab height are analyzed. Effective electron trajectories are also shown for a better understanding of the breakdown phenomenon, finding different multipactor regimes.Index Terms-Multipactor effect, RF breakdown, parallelplate waveguide, ferrite components.

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Preliminary results on the Multipactor effect prediction in RF components with ferrites

Cited by 5 publications

References 5 publications

Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite

Analysis of Multipactor RF Breakdown in a Waveguide Containing a Transversely Magnetized Ferrite

Experimental Validation of Multipactor Effect for Ferrite Materials Used in L- and S-Band Nonreciprocal Microwave Components

Multipactor Effect in a Parallel-Plate Waveguide Partially Filled With Magnetized Ferrite

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