Electromagnetic Theory for Microwaves and Optoelectronics

Zhang, Keqian; Li, Dejie

doi:10.1007/978-3-662-03553-5

Cited by 269 publications

(263 citation statements)

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“…They have the same resonant frequency and field distribution except that they are rotated 90 • in space from each other. The electromagnetic field distribution of the TE 114 mode is as follows [22],…”

Section: Theory and Simulation Of The Spherical Cavity Theory And Chomentioning

confidence: 99%

RF design of an S-band spherical cavity pulse compressor

Hou

Shu

et al. 2017

Radiat Detect Technol Methods

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The pulse compressor plays an important role in accelerators by enhancing the RF peak power. An S-band (2856 MHz) spherical cavity pulse compressor consisting of a special 3 dB coupler and a single spherical energy storage cavity has been developed in Institute of High Energy Physics. The special 3 dB coupler converts the TE 10 mode in rectangular waveguide to two polarization degenerated TE 11 modes in cylindrical waveguide. It is also a circular polarizer and its general scattering matrix is given for the first time. The magnitude and the phase difference of the two TE 11 modes are −3.016, −3.005 dB and 90.02 • in HFSS, while it is −3.01, −3.01 dB and 89.79 • in CST. The simulated S parameters show agreement with the general scattering matrix. The TE 114 mode with an unloaded Q factor of 190,000 has been chosen to resonate in the spherical cavity. An energy multiplication factor of 1.75 and a peak power gain of 5.75 were obtained for the whole pulse compressor, which agrees with the design requirements. A good pulse compression performance is also proved by the CST time-domain simulation. In addition, the scheme for tuning and detuning is designed and given in detail. Compared to the traditional SLED type, the spherical cavity pulse compressor uses only one spherical cavity to real-

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Section: Theory and Simulation Of The Spherical Cavity Theory And Chomentioning

confidence: 99%

RF design of an S-band spherical cavity pulse compressor

Hou

Shu

et al. 2017

Radiat Detect Technol Methods

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“…To explain the vector i in more detail, we should note that field distributions in the xy-plane are obtained from single scalar potential Φ(x, y) [13]. Suffix p takes a half-odd integer when Φ(x, y) becomes an even function with respect to the x-axis (Φ(−x, y) = Φ(x, y)), and an integer otherwise (namely, the odd case Φ(−x, y) = −Φ(x, y)).…”

Section: Resonance Conditions For a Paraelectric Cubementioning

confidence: 99%

The Origin of Electromagnetic Resonances in Three-Dimensional Photonic Fractals

Sangawa¹

2009

PIER

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Abstract-After a report on strange electromagnetic resonances emerging in an isotropic paraelectric Menger sponge (MS) now known as a photonic fractal, vigorous studies began to reveal their properties. However, the mechanics of how the resonances occur is still unknown. This report focuses on the findings that the resonances can be perturbation-theoretically identified as those originally occurring in an isolated dielectric cube, and that they arise within band gaps and uncouple with Bloch modes for a certain multiperiodic lattice. This interpretation is justified by the fact that the MS can be considered as a cube embedded in the lattice rather than the outcome of conventional recursive fractal structuring operations. An experimental formula for resonance conditions already reported can be derived from this interpretation.

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“…Хорошо известно, что в некоторых криволинейных координатах, в том числе цилиндрических, можно свести уравнения Максвелла к паре уравнений Гельмгольца. Потенциалы вводились и именовались по разному, например, назывались функци-ями Боргниса или -координатой векторов Герца [6,31]. Поэтому волны в полом регулярном волноводе описываются двумя независимыми уравнениями Гельмголь-ца, что и даёт деление нормальных мод на ТЕ-и ТМ-моды.…”

Section: Introductionunclassified

On the Reduction of Maxwell’s Equations in Waveguidesto the System of Coupled Helmholtz Equations

Malykh

Sevastianov

et al. 2018

Vestn. Ross. univ. družby nar., Ser. Mat. inform. fiz

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Electromagnetic Theory for Microwaves and Optoelectronics

Cited by 269 publications

References 0 publications

RF design of an S-band spherical cavity pulse compressor

RF design of an S-band spherical cavity pulse compressor

The Origin of Electromagnetic Resonances in Three-Dimensional Photonic Fractals

On the Reduction of Maxwell’s Equations in Waveguidesto the System of Coupled Helmholtz Equations

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