Edge-triggered driver circuit for ultra-wideband pulse generator with cascode impulse shaping

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology Pub Date : 2012-05-16 DOI:10.1109/ECTICON.2012.6254325

P. Pongsoon, K. Kaemarungsi, Dahmmaet Bunnjaweht

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引用次数: 4

Abstract

An ultra-wideband (UWB) pulse generator circuit is said to be the heart of any UWB system. However, the pulse generator typically requires an edge-triggered driver that is the essential signal source of any pulse generator. The design of edge-triggered driver circuit influences the amplitude, the pulse repetition, and the width of UWB pulses at the output. In this study, a low cost and low complexity edge-triggered driver circuit is proposed, which creates a square wave with very short rising and falling edges to feed a step recovery diode based pulse generator with cascode pulse shaping circuit. The proposed driver circuit is tuneable by simply changing the crystal oscillator component in the circuit, which results in different pulse repetition frequency for the UWB pulse generator. The measurement results when changing the crystal oscillator from 1MHz to 8MHz showed that the output UWB pulse was a Gaussian pulse with pulse width of 1.87 ns and pulse amplitude of 2.16 Vp.

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级联脉冲整形超宽带脉冲发生器的边缘触发驱动电路

超宽带(UWB)脉冲产生电路被认为是任何超宽带系统的心脏。然而，脉冲发生器通常需要一个边缘触发驱动器，这是任何脉冲发生器的基本信号源。边缘触发驱动电路的设计影响了输出超宽带脉冲的幅度、脉冲重复次数和宽度。本文提出了一种低成本、低复杂度的边缘触发驱动电路，该电路产生具有极短上升沿和下降沿的方波，以馈入具有级联码脉冲整形电路的阶跃恢复二极管脉冲发生器。所提出的驱动电路可以通过简单地改变电路中的晶体振荡器元件进行调谐，从而产生不同的超宽带脉冲发生器脉冲重复频率。将晶体振荡器从1MHz改为8MHz时的测量结果表明，输出的超宽带脉冲为高斯脉冲，脉冲宽度为1.87 ns，脉冲幅度为2.16 Vp。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology

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