Title :
A circuit design of UWB GPR transient source based on avalanche transistor
Author :
Luo, Shangbang ; Tang, Pengju ; Li, Chao
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A circuit design of Ultra-Wideband (UWB) transient source based on avalanche transistor is presented in this paper. Under a 20V voltage supply, a 1ns pulse width and 12V maximal amplitude periodic pulse is achieved. Experimental results show the pulse width is 1.2ns and the peak amplitude is 14V.In addition, the signal waveform is simple, and the energy mainly range from 600MHz to 2GHz, which are fit for the Ground Penetrating Radar(GPR) application. By easily connecting with low noise amplifier and horn antenna and then testing this whole system, it shows a good performance with a stable and symmetrical waveform. Due to all these advantages above, the UWB pulse generator circuit design is very appropriate to be integrated in GPR system.
Keywords :
ground penetrating radar; low noise amplifiers; pulse generators; transistor circuits; ultra wideband radar; GPR; GPR system; UWB GPR transient source; UWB pulse generator circuit design; avalanche transistor; frequency 600 MHz to 2 GHz; ground penetrating radar; horn antenna; low noise amplifier; maximal amplitude periodic pulse; peak amplitude; symmetrical waveform; ultrawideband transient source; voltage 12 V; voltage 14 V; voltage 20 V; voltage supply; Abstracts; Ear; Ground penetrating radar; Lead; Wireless communication; GPR; UWB; avalanche transistor; pulse; transient;
Conference_Titel :
Electromagnetics; Applications and Student Innovation (iWEM), 2012 IEEE International Workshop on
Conference_Location :
Chengdu, Sichuan
Print_ISBN :
978-1-4673-3000-8
Electronic_ISBN :
978-1-4673-2998-9
DOI :
10.1109/iWEM.2012.6320371
