基于雪崩晶体管的超宽带探地雷达瞬态源电路设计

2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI:10.1109/IWEM.2012.6320371

Shangbang Luo, Pengju Tang, Chao Li

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引用次数: 1

摘要

介绍了一种基于雪崩晶体管的超宽带瞬态源电路设计。在20V电压下，脉冲宽度为1ns，最大幅值为12V。实验结果表明，脉冲宽度为1.2ns，峰值振幅为14V。此外，该信号波形简单，能量主要在600MHz ~ 2GHz范围内，适合于探地雷达(GPR)应用。通过简单地连接低噪声放大器和喇叭天线，对整个系统进行测试，结果表明系统性能良好，波形稳定、对称。由于上述优点，超宽带脉冲发生器电路设计非常适合集成在探地雷达系统中。

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A circuit design of UWB GPR transient source based on avalanche transistor

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.

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来源期刊

2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition

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