极窄脉冲信号调理技术研究
发布时间：2018-08-06 16:21
【摘要】：脉冲信号发生器是现代测试领域中非常重要的信号源之一,它能输出多种类型和电平标准的脉冲信号,工程应用中通常用来模拟各种激励源。通道模块作为脉冲信号发生器的重要组成部分,决定了脉冲发生器输出信号的高低电平、上升和下降时间等许多参数。在极窄脉冲发生器的设计中,通道模块作为其输出级决定了最终输出信号的质量,而调理技术是通道模块设计的关键技术,它要求实现对极窄脉冲信号幅度电平等参数的精密可控,是设计中的一大难点。本课题针对极窄脉冲发生器的通道模块展开研究,并针对其设计难点对多种脉冲信号调理技术进行研究。线性调理和非线性调理技术是通道调理的两个关键技术,本文基于这两种关键技术提出了不同方案并分别进行具体电路设计,对比实验结果分析其优缺点,并最终采用线性调理和非线性调理相结合的方法完成极窄脉冲调理通道的设计。本文主要内容包括:(1)分析极窄脉冲信号的特点,并结合脉冲发生器的国内外发展现状来论述极窄脉冲通道调理的技术难点。(2)对传统调理技术进行深入的分析,提出基于RF放大器、差动放大电路和引脚驱动器的调理方案,并分别设计实验电路,根据实验结果论述三种调理方案的优缺点。(3)采用线性调理和非线性调理相结合的技术拟定新的方案,并采用幅度分段的方式结合预加重和偏置技术设计通道调理电路,根据项目指标对该方案的实验结果进行分析,并验证其可行性。本文通过对极窄脉冲调理技术的研究完成了对频率范围15MHz至1.5GHz的极窄脉冲信号的调理,实现了对最小脉宽达200ps脉冲信号的电平控制,并最终应用到高速窄脉冲发生器的通道设计中。
[Abstract]:Pulse signal generator is one of the most important signal sources in the field of modern testing. It can output various types and level standard pulse signals. In engineering applications, it is usually used to simulate various excitation sources. As an important part of the pulse signal generator, the channel module determines many parameters, such as the high and low level, rise and fall time of the output signal of the pulse generator. In the design of the very narrow pulse generator, the channel module as its output stage determines the quality of the final output signal, and the conditioning technology is the key technology in the channel module design. It is a difficult point to realize the precision control of the parameters such as amplitude and level of very narrow pulse signal. In this paper, the channel module of the very narrow pulse generator is studied, and various pulse signal conditioning techniques are studied in view of its design difficulties. Linear conditioning and nonlinear conditioning are two key technologies of channel conditioning. Based on these two key technologies, different schemes are proposed and specific circuit designs are carried out respectively, and the advantages and disadvantages of these two key techniques are analyzed by comparing the experimental results. Finally, the narrow pulse conditioning channel is designed by the combination of linear conditioning and nonlinear conditioning. The main contents of this paper are as follows: (1) analyzing the characteristics of very narrow pulse signal, and discussing the technical difficulties of very narrow pulse channel conditioning combined with the development of pulse generator at home and abroad. (2) deeply analyzing the traditional conditioning technology. The conditioning scheme based on RF amplifier, differential amplifier and pin driver is proposed, and the experimental circuits are designed respectively. According to the experimental results, the advantages and disadvantages of the three conditioning schemes are discussed. (3) A new scheme is developed by combining linear and nonlinear conditioning techniques, and the channel conditioning circuit is designed by combining amplitude segmentation with preweighting and biasing techniques. The experimental results are analyzed according to the project index and the feasibility is verified. In this paper, the very narrow pulse signal from 15MHz to 1.5GHz in frequency range is adjusted by studying the very narrow pulse conditioning technology, and the level control of minimum pulse width to 200ps pulse signal is realized. Finally, it is applied to the channel design of high speed narrow pulse generator.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN782
，
本文编号：2168281
[Abstract]:Pulse signal generator is one of the most important signal sources in the field of modern testing. It can output various types and level standard pulse signals. In engineering applications, it is usually used to simulate various excitation sources. As an important part of the pulse signal generator, the channel module determines many parameters, such as the high and low level, rise and fall time of the output signal of the pulse generator. In the design of the very narrow pulse generator, the channel module as its output stage determines the quality of the final output signal, and the conditioning technology is the key technology in the channel module design. It is a difficult point to realize the precision control of the parameters such as amplitude and level of very narrow pulse signal. In this paper, the channel module of the very narrow pulse generator is studied, and various pulse signal conditioning techniques are studied in view of its design difficulties. Linear conditioning and nonlinear conditioning are two key technologies of channel conditioning. Based on these two key technologies, different schemes are proposed and specific circuit designs are carried out respectively, and the advantages and disadvantages of these two key techniques are analyzed by comparing the experimental results. Finally, the narrow pulse conditioning channel is designed by the combination of linear conditioning and nonlinear conditioning. The main contents of this paper are as follows: (1) analyzing the characteristics of very narrow pulse signal, and discussing the technical difficulties of very narrow pulse channel conditioning combined with the development of pulse generator at home and abroad. (2) deeply analyzing the traditional conditioning technology. The conditioning scheme based on RF amplifier, differential amplifier and pin driver is proposed, and the experimental circuits are designed respectively. According to the experimental results, the advantages and disadvantages of the three conditioning schemes are discussed. (3) A new scheme is developed by combining linear and nonlinear conditioning techniques, and the channel conditioning circuit is designed by combining amplitude segmentation with preweighting and biasing techniques. The experimental results are analyzed according to the project index and the feasibility is verified. In this paper, the very narrow pulse signal from 15MHz to 1.5GHz in frequency range is adjusted by studying the very narrow pulse conditioning technology, and the level control of minimum pulse width to 200ps pulse signal is realized. Finally, it is applied to the channel design of high speed narrow pulse generator.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN782
，
本文编号：2168281
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