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利用二维三角格子金属光子带隙谐振腔代替回旋管的传统柱形谐振腔,并对腔体进行了TE波模式的计算与分析.综合考虑腔体内外的结构特征,给出了光子带隙谐振腔冷腔模式理论的研究方法,发现腔内存在单模工作的可能与条件以及非角对称情况下的电磁模式分布特征.研究结果表明,利用光子带隙谐振腔代替回旋管的传统腔体,可使回旋管在不受腔体横向尺度限制的条件下实现单模工作.这对于提高回旋管的功率容量、有效实现高次单模与高次回旋谐波耦合条件下的注-波互作用、降低工作磁场并从物理上根本改变回旋管的工作状态提供了理论依据.
The two-dimensional triangular lattice metal photonic bandgap resonator is used to replace the traditional cylindrical resonator of gyrotron, and the calculation and analysis of TE wave mode are performed on the cavity.According to the structural characteristics of the cavity, the photonic bandgap It is found that there is the possibility and condition of the single-mode work in the cavity and the distribution of the electromagnetic mode in the case of non-angular symmetry.The results show that the use of photonic band gap resonator instead of the traditional cavity , So that the gyroscope can realize the single-mode operation without being limited by the transverse dimension of the cavity.This is an effective way to improve the power capacity of the gyrotron and realize the injection-wave interaction under high-order single-mode and high-order gyration harmonic coupling Provide a theoretical basis for reducing the working magnetic field and fundamentally changing the working state of the gyrotron.