120GHz矩形耦合腔扩展互作用振荡器模拟研究(英文)

Simulation of a 120GHz Rectangular Coupled Cavity EIO in Sub-Terahertz Waves

用三维电磁模拟软件CST和PIC研究了一种120GHz扩展互作用振荡(EIO),其慢波结构由12个矩形重入耦合腔组成,且两相邻腔之间的耦合槽交错分布。利用CST,模拟和计算了系列冷测参数,包括频率-相位色散关系、耦合阻抗和特征阻抗。热测模拟结果表明,在12kV的电子注工作电压和0.17μP的导流系数下,在EIO中辐射出频率为120.85 GHz、峰值输出功率为465 W的电磁波。

This paper studies a 120GHz extended interaction oscillator (EIO) using the three-dimensional electromagnetic simulation software CST and PIC. The slow-wave structure consists of 12-cavity of the rectangular reentrant ladder structure coupled-cavity and each adjoining coupling slot of the cavity is staggered. By CST, the cold-test parameters including frequency-phase dispersion, interaction impedance and characteristic impedance are simulated and calculated. Simulation results of hot-test by PIC show that the excited frequency is 120.85 GHz with the operation voltage of the beam 12kV, the per-veance 0.17μP, output peak power 465 W.