基于圆柱谐振腔的脉冲压缩研究

Research of Pulse Compression Based on Cylindrical Resonant Cavity

设计了一个基于高品质因数圆柱谐振腔的脉冲压缩系统模型,采用渐变式的输入端过渡段设计了输出端过渡段,保证脉冲压缩系统在储能、泄能阶段的高能量传输效率。通过CST建模仿真对模型耦合口等参数进行优化,实现谐振腔在2.9003 GHz处近似以TE1,1,22模式工作,计算了谐振频点处的电场幅值分布并分析其特点,在忽略开关等损耗的条件下,通过数值递推法大致计算出模型在泄能阶段可获得约61倍的输出功率增益,脉冲宽度约为3 ns,能量效率约为10.5%。

A pulse compression system model based on high Q-factor cylindrical resonator is designed.In which a gradual input transition section is used,and an output transition section is designed to ensure the high energy transmission efficiency both in energy storage and discharge stages.Through CST modeling and simulation,parameters including the model coupling port are optimized,and the TE 1,1,22 mode of the resonant cavity at 2.9003 GHz is achieved.The electric field amplitude distribution at the resonant frequency is calculated and the characteristics of it are analyzed.Under the condition of ignoring switching and other losses,the calculation results using numerical recurrence method show that the model can realize about 61 times of output power gain in energy dissipation stage,the pulse width is about 3 ns,and the energy efficiency is about 10.5%.