强激光与粒子束2025，Vol.37Issue(9)：20-26,7.DOI:10.11884/HPLPB202537.250097
基于PIN二极管的兆瓦级快速倒相开关设计
Design of a megawatt-level fast bi-phase modulator based on PIN diodes
摘要
Abstract
[Background]High power microwave(HPM)pulse technology has developed rapidly due to its applications in particle accelerators,radar,communications,directed energy,plasma physics,and other fields.Pulse compression technology provides an effective method for enhancing the peak power of microwave pulses.[Purpose]In order to study a low-cost,miniaturized,stable,and arrayable SLAC Energy Doubler(SLED)based on vacuum electronic oscillators such as magnetrons,a high power fast bi-phase modulator with megawatt-level capacity and nanosecond response time has been designed.[Methods]Insert a conventional PIN diode loaded-line type phase-shifting circuit into the waveguide structure,and the equivalent impedance of the phase-shifting circuit changes by switching the"on"and"off"states of the PIN diodes through the waveguide external bias circuit,then the waveguide transmission microwave phase changes.The high-power characteristics of such PIN diode waveguide phase shifters have been verified by high-power experiments.[Results]In this paper,a 180°phase shift is realized by cascading 8 phase-shifting circuit cells.The frequency-domain and time-domain parameters of the designed bi-phase modulator are tested.The frequency-domain test results show that the insertion loss of the bi-phase modulator is less than 0.7 dB,and the phase shift is 172°at the center frequency of 2.458 GHz.The error of the phase shift is within±4°compared with that of the design value in simulation.The time-domain test results show that the inversion time of the bi-phase modulator is about 5 ns.[Conclusions]Compared with traditional semiconductor phase shifters,this bi-phase modulator can achieve the same phase-reversal speed while withstanding high power capacities,making it extremely valuable in the HPM field.关键词
能量倍增器/脉冲压缩器/倒相开关/PIN二极管Key words
energy doubler/pulse compressor/bi-phase modulator/PIN diode分类
信息技术与安全科学引用本文复制引用
陈良萍,殷勇,江涛,秦雨,李海龙,王彬,毕亮杰,熊正锋,蒙林..基于PIN二极管的兆瓦级快速倒相开关设计[J].强激光与粒子束,2025,37(9):20-26,7.基金项目
国家自然科学基金项目(62271113、62401125) （62271113、62401125）
四川省自然科学基金项目(2023NSFSC1376) （2023NSFSC1376）
中央高校基础研究基金项目(ZYGX2024J008) （ZYGX2024J008）
