An UWB GPR transient source based on avalanche transistor
An Ultra-Wideband (UWB) transient source based on avalanche transistor is implemented in this paper. The trigger signal is produced by the first order avalanche transistor, and the inductance added in the output end of the trigger signal in parallel makes fall edge narrower, so that the width of the final pulse reduces from 2.9 ns to 1.14 ns while the amplitude maintains the same value. Two avalanche capacitances discharging on the load resistance in common are used to enhance the pulse amplitude. The experiment result achieves a periodic pulse with the width of 1.14 ns and the amplitude of -13.2 V, whose voltage utilization is up to 66％ with 20 V supply voltage. Due to the circuits low supply voltage and narrow enough pulse, and with the analysis of signal processing requirement, this UWB pulse generator is very appropriate to be integrated in portable superficial layer Ground Penetrating Radar (GPR).
Ultra-Wideband (UMB) transient avalanche transistor pube Ground Penetrating Radar (GPR)
Pengju Tang Shangbang Luo Chao Li Peng Gao
School of Electronic Engineering University of Electronic Science and Technology of China Chengdu, C School of Electronic Engineering University of Electronic Science and Technology of China Chengdu, Research Institute of Electronic Science and Technology University of Electronic Science and Technol
国际会议
2012 5th Global Symposium on Millimeter-Waves(2012年第五届全球毫米波会议 GSMM 2012)
哈尔滨
英文
326-329
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）