摘要
针对大功率微波测量的需要,设计了使用液体衰减材料(硫酸钠溶液)的矩形波导式微波衰减器,给出了液体衰减材料选择,工作温度确定,衰减器匹配结构设计的要点,通过自循环系统大大提高了液体衰减材料的散热效率和功率容量。据此实现的微波衰减器在1.8~2.6 GHz频段内具有53 dB的衰减量,点频稳定度达到±0.5 dB,设计功率达到30 kW,与国内外同类型衰减器相比已达到较高水平。
A novel method for measuring the power of high-power microwave is proposed using a waveguide attenuator with temperature-controlling system.Experiments were carried out using our attenuator in the frequency range from 1.8~2.6 GHz.Results show that extremely low microwave reflection and large attenuation(53 dB) can be achieved using our attenuator under high-power condition.The attenuation accuracy for spot frequency can be improved to ±0.5 dB,and the power capacity is 30 kW.The developed attenuator and technique provide an efficient alternative approach for measuring microwave power in widely used high-power microwave systems.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2011年第5期1145-1150,共6页
Chinese Journal of Scientific Instrument
关键词
大功率微波
微波测量
波导衰减器
衰减材料
理化特性
温度控制
high-power microwave
microwave measurement
waveguide attenuator
attenuating material
physicochemical characteristic
temperature control