强激光与粒子束2024，Vol.36Issue(5)：117-123,7.DOI:10.11884/HPLPB202436.230285
Ricker脉冲功率合成方法及辐射效率
Power synthesis method of Ricker pulse and its radiation efficiency
摘要
Abstract
This article investigates the Ricker pulse to address the issue of low radiation efficiency in time-domain antennas.Firstly,it highlights the high center frequency of the Ricker pulse,which is advantageous for improving antenna radiation efficiency.Then it proceeds to explain the power synthesis method for generating Ricker pulses,derives a theoretical formula for the optimal delay of synthesizing high-order Gaussian pulses,starting with precise time delay control.It describes the design of a unipolar pulse and the optimization of its falling edge using the sharpening capacitor method.With this unipolar pulse as a foundation,a Ricker pulse is designed,featuring a peak-to-peak value of 5.1 kV,a main peak half-width of 350 ps,and a center frequency of 0.5 GHz.To verify the correctness of the analysis,the article proposes a simple method to calculate the radiation efficiency of all-metal time-domain antennas.Both the designed Ricker pulse and a unipolar pulse with the same pulse width are used to excite the same antenna.The results demonstrate that the amplitude radiation efficiency of the single-pole pulse is only about 60%.In contrast,the Ricker pulse achieves over 80%efficiency.Similarly,the power radiation efficiency of the single-pole pulse is less than 40%,while that of the Ricker pulse can exceed 60%.The utilization of Ricker pulses as excitation has proven to be highly effective in enhancing the radiation efficiency of antennas,thereby minimizing the potential damage to transmission systems caused by reflected power.Additionally,this technique holds immense value in antenna miniaturization and exhibits promising applications in time-domain technologies like ground penetrating radar and high-power microwave sources.关键词
脉冲功率合成/Ricker脉冲/时域天线/中心频率/辐射效率Key words
pulsed power synthesis/Ricker pulse/time-domain antenna/center frequency/radiation efficiency分类
信息技术与安全科学引用本文复制引用
谢继杨,蒋正,魏召唤,杨宏春..Ricker脉冲功率合成方法及辐射效率[J].强激光与粒子束,2024,36(5):117-123,7.基金项目
时域电磁脉冲干扰效应机理研究(H04W211008) （H04W211008）
