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The 100MHz pulse generator design and practice

Author: ZhuZuo
Tutor: HuangJianGuo
School: University of Electronic Science and Technology
Course: Measuring Technology and Instruments
Keywords: Signal Type Operating mode Pulse width Delay Pulse amplitude
CLC: TN782
Type: Master's thesis
Year: 2010
Downloads: 142
Quote: 1
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Abstract


The pulse generator as a common source , widely used in the field of modern measurement and control , it is able to generate the the fully controllable pulse signal of the pulse width , pulse amplitude , signal delay pulse parameters to meet specific test requirements . The the 100MHz pulse generator design is based on these applications and requirements developed , which bears the main tasks include: continuous , triggered , gated three operating modes of the single pulse group pulse signal generated , and the ability to achieve the precision adjustable pulse width, pulse amplitude , and the signal delay . Based on the importance of the pulse generator in the field of modern testing , combined with the commitment of the project tasks , the paper focuses on the pulse signal generation and pulse parameter adjustment method to start on , and be able to work out a complete set of various operating modes and a variety of parameter adjustment pulse generating program , to achieve the output frequency is 1Hz ~ 100MHz, a pulse width of 5ns ~ 995μs (1KHz pulse width is not adjustable , the 50% duty cycle ) , the minimum pulse width resolution of 10ps and the delay range 0CLK ~ 216 CLK frequency indicators also realized amplitude range 0.1VPP ~ 3.5VPP, and level windows range -1.00V ~ 3.50V, and the resolution of 10mV amplitude and level indicators , the final proof of actual circuit test the reliability and feasibility of the design . The main work of this paper include: 1 . Clarify the pulse signal generator , and pulse parameters to adjust the basic programs and complete hardware circuit design and debugging instrument functions and indicators . DDS as the core to achieve the precise control of the output clock frequency . The use of FPGA to realize the generation and control of the three operating modes of the single pulse group pulse signal and pulse delay adjustment . 4 using the method of the counter programmable delay line to achieve the adjustment of the pulse width . 5 using the pin driver as the core of the pulse conditioning circuit to achieve the adjustment of the pulse amplitude . 6. Analysis of each circuit debugging problems and propose solutions. 7 . Comprehensive test instrument on the final completion of the various functions and indicators , and test results are given and given analysis .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Pulse,pulse circuits > Pulse generation,pulse generator
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