An investigation of periodic waveguides with axial and azimuthal corrugations

Zhang, Yong; Mo, Y.L.; Xu, Renliang; Yan, Bo; Xie, Xiao Qiang

doi:10.1109/tps.2005.860114

IEEE Trans. Plasma Sci.

2005

DOI: 10.1109/tps.2005.860114

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An investigation of periodic waveguides with axial and azimuthal corrugations

Yong Zhang

Y.L. Mo

Renliang Xu

et al.

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Cited by 12 publications

(1 citation statement)

References 17 publications

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“…There are many studies available to analyze the beam-wave interaction structure, which is based on different techniques; Lemke and Clark [10] used a linear theory with the thin beam approximation for the coaxial structure having square wave-type periodic anode, but the main constraint associated with this analysis is limited for only symmetric TM 0n mode. Zhang et al [11] analyzed the periodic disk-loaded cylindrical waveguide structure having axial and azimuthal corrugation using the modified Rayleigh-Fourier technique in the absence of electron beam. Sagor and Amin [12] considered a linear analysis to study the circular-edge periodic disk-loaded cylindrical waveguide structure in the presence of an annular electron beam.…”

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confidence: 99%

Beam–Wave Interaction Analysis Inside an Azimuthally Partitioned Axially Periodic Disk-Loaded Coaxial Structure for Bifrequency MILO

Kumar

Tripathi

Dwivedi

et al. 2021

IEEE Trans. Plasma Sci.

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In this article, the electromagnetic (or RF) behavior of the azimuthally partitioned axially periodic metal diskloaded coaxial structure was investigated using an equivalent circuit approach in the presence of the electron beam. In the analysis, the linearized Maxwell's fluid equation (also known as Vlasov-Maxwell's equation) was used to analyze the region in which the electron beam was present. The expression for the equivalent series inductance and shunt capacitance per unit length for the equivalent transmission line was derived in the electron beam present and absent case. The derived expressions include all the harmonics effects present inside the structure. Furthermore, the expression of the dispersion relation and temporal growth rate (TGR) was derived using the calculated equivalent series inductance and equivalent shunt capacitance. The output RF power and energy were also calculated analytically and validated through the PIC simulation. The results were compared with the already reported literature, and the relative error between them was below 5%. In addition, the effect of different beam parameters on the TGR behavior was also analyzed. Index Terms-High-power microwave (HPM), magnetically insulated line oscillator (MILO), slow-wave structure, temporal growth rate (TGR). I. INTRODUCTIONI N RECENT few years, it is noticed that the research activity in the high-power microwave (HPM) sources, which is capable to generate multifrequency, is drastically increased because of its potential application in the fields of defense application, linear particle accelerator, and plasma heating [1]. Various HPM sources, such as magnetically insulated line oscillator (MILO), transit-time oscillator (TTO), and relativistic backward-wave oscillator (RBWO), have been developed to generate bifrequency RF signals [2]-[4].

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mentioning

confidence: 99%

Beam–Wave Interaction Analysis Inside an Azimuthally Partitioned Axially Periodic Disk-Loaded Coaxial Structure for Bifrequency MILO

Kumar

Tripathi

Dwivedi

et al. 2021

IEEE Trans. Plasma Sci.

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Dispersion Characteristics of Arbitrary Periodic Structures with Rectangular Grooves

Tigelis

Raguin

Ioannidis

et al. 2008

Int J Infrared Milli Waves

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The dispersion characteristics of a circular cylindrical waveguide with periodic surface corrugations consisting of rectangular grooves with smoothing are examined using the Space Harmonic Method (SHM). The whole structure is divided into two regions, one describing the propagation volume and one inside the grooves. In the first region, the Floquet theorem is applicable and the field distribution is expressed as a summation of spatial Bloch components, whereas in the second one an appropriate Fourier expansion of standing waves is used. Applying the boundary conditions an infinite system of equations is obtained, which is solved numerically by truncation. Several cases are considered, including the limiting cases of a sinusoidal and a rectangular corrugation profile, to check the accuracy of the method proposed as well as its dependence on the corrugation profile.Numerical results are presented only for transverse magnetic modes, although the formalism can be easily extended to include all kinds of waves that can in principle propagate in such a structure.

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TE Waves in Arbitrary Periodic Slow-wave Structures with Rectangular Grooves

Mallios

Latsas

Tigelis

2009

J Infrared Milli Terahz Waves

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The dispersion characteristics of the transverse electric modes in a waveguide with circular cross-section and periodic rectangular surface corrugations with smoothed edges are examined by the space harmonic method. The whole structure is divided into two regions, one in the propagation area and one inside the grooves. In the first region, the Floquet theorem is applied and the field distribution is expressed as a summation of spatial Bloch components, while an appropriate Fourier expansion of standing waves is used inside the grooves. Applying the appropriate interface conditions, an infinite system of equations is obtained, which is solved numerically by truncation. Numerical results are presented for several cases to check the convergence and the accuracy of the method, as well as its dependence on the corrugation profile. This formalism could be easily expanded to include all kind of waves that can in principle propagate in such slow-wave structures.

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An investigation of periodic waveguides with axial and azimuthal corrugations

Cited by 12 publications

References 17 publications

Beam–Wave Interaction Analysis Inside an Azimuthally Partitioned Axially Periodic Disk-Loaded Coaxial Structure for Bifrequency MILO

Beam–Wave Interaction Analysis Inside an Azimuthally Partitioned Axially Periodic Disk-Loaded Coaxial Structure for Bifrequency MILO

Dispersion Characteristics of Arbitrary Periodic Structures with Rectangular Grooves

TE Waves in Arbitrary Periodic Slow-wave Structures with Rectangular Grooves

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