外文翻译波形合成电路分析与设计.docxVIP

附录二：英文原文The Analysis and Design ofWaveform GeneratorXue lian ,Wang Fan ,Zheng Jin-faEngineering and CommerceCollege, South-CentralUniversity for Nationalities, WuhanHubei 430065Abstract: In this paper, the sinusoidal waves in different frequency were synthesized into square wave according to the method of Fourier series. Firstly, the needed sinusoidal waves were achieved through the square wave generation circuit, the frequency division circuit and the filter circuit; then, after the sinusoidal waves’ phase position were shifted and synthesized, the square wave was generated. This circuit in this method was more cheaper than other circuits (eg: DDS). Keywords: Waveform Generator;SinusoidalWave;Filter;Phase PositionShift1 waveform synthesis system overviewThis is designed to simulate the process of signal synthesis. For a square wave signal by Fourier series spread knowable, it can decompose the amplitude of the more specific for unlimited odd harmonics, so in turn as long as infinite multiple odd harmonic component, the amplitude and the harmonic proportion in a particular superposition, also will certainly get a square wave signal. This paper is the simulated the base wave and three harmonic harmonic component synthesis process of square wave signal. Theoretically speaking, the harmonic components, synthetic waveform will more close to the standard square bobo shape.This system begin with a square wave oscillator to generate a frequency of 60KHz pulse signal, again into separate frequency device 10KHz to get a frequency for handling of square wave signal and a frequency of square wave signal for 30KHz, then respectively through the filter processing for the sine signal and 30KHz 10KHz to close-spaced 10KHz sine wave as base wave component, 30KHz sine wave as three times, through modulation circuit harmonics of adjust them respectively in fengfeng value, can satisfy 2V 6V and Fourier series spread coefficient ratio; Put the sine signals into 10KHz to phase shifter p