同軸波紋波導的高頻特性數(shù)值分析
NUMERICAL ANALYSIS OF HIGH FREQUENCY CHARACTERISTICS OF COAXIAL CORRUGATED WALL WAVEGUIDE
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摘要: 本文提出先用時域有限差分法計算含周期慢波結(jié)構(gòu)的諧振腔的諧振頻率和諧振場分布,再基于周期慢波電路色散關(guān)系的周期性質(zhì),由幾個特殊色散點處的頻率及波數(shù)數(shù)值組合出周期慢波線的完整色散關(guān)系的新方法。數(shù)值計算了同軸波紋波導中TM0n模式的色散關(guān)系、耦合阻抗等特性參量。
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關(guān)鍵詞:
- 同軸波紋波導; 色散關(guān)系; 時域有限差分法; 耦合阻抗
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. -
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]張兆鏜.微波管高頻系統(tǒng)的測量.北京:國防工業(yè)出版社,1982, 181-182. -
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