同轴波纹波导的高频特性数值分析
NUMERICAL ANALYSIS OF HIGH FREQUENCY CHARACTERISTICS OF COAXIAL CORRUGATED WALL WAVEGUIDE
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摘要: 本文提出先用时域有限差分法计算含周期慢波结构的谐振腔的谐振频率和谐振场分布,再基于周期慢波电路色散关系的周期性质,由几个特殊色散点处的频率及波数数值组合出周期慢波线的完整色散关系的新方法。数值计算了同轴波纹波导中TM0n模式的色散关系、耦合阻抗等特性参量。Abstract: A novel numerical modeling technique, based on FD-TD and the intrinsic characteristic of spatial periodic structure, is used to analyze the high frequency characteristics of the slow wave structure of arbitrary geometry. The method was sucessfully applied to calculate the complete dispersion relation and couple impedance of TM0n modes in a coaxial corrugated wall waveguide.
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Bromborsky B A. Calculation of TMo, dispersion relations in a corrugated cylindrical waveguide IEEE Trans. on MTT, 1985; MTT-32(6): 600-605.[2]Sivegle J A, Poukev J W, Leifeste G T. Backward wave oscillator with rippled wall resonators: Analytic t.heorey and numerical simulation. Phys. Fuild, 1985, 28(9): 2882-2894.[3]Navarro A, Nunez M J, Martin E. Finite difference time domain FFT method applied to axially.[4]symmetrical electromagnetic resonant devices. IEE Proc-H,1990, 137(3): 193-182.[5]张兆镗.微波管高频系统的测量.北京:国防工业出版社,1982, 181-182. -
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