摘要
高能量瞬时脉冲的产生及测量一直是探测领域内的研究热点。文中结合雪崩三极管的最大雪崩电流,设计了基于单级雪崩三极管串行级联的窄脉冲产生电路,用衰减器配合泰克P6139A探头,测得脉冲为单极性波,峰峰值可达750V,半高宽3.4ns,可重复频率达10kHz,波形稳定性好。脉冲源电路具有硬件简单、性能稳定、易于匹配等优点,可用于低频段脉冲探地雷达系统。
Design of the nanosecond pulser with high power was a challenge in the exploration field.Single stage serial-wise structure of four avalanche transistors used in the nanosecond pulser was investigated in the paper.Experimental results show that into the 50Ωload the amplitude of the output pulse can reach 750V and half-width was 3.4 nanosecond. Repetition frequency of the pulser can reach to 10kHz,waveform stability.The pulser can be made easily and works well.It can be used in low-resolution pulse GPR system.
出处
《自动化与仪表》
北大核心
2012年第5期57-60,共4页
Automation & Instrumentation
关键词
电子技术
探地雷达
雪崩三极管
串行雪崩
electronic technology
ground penetrating radar
avalanche transistor
serial-avalanche
