文件名称：pcb guidelines
文件大小：79KB
文件格式：DOCX
更新时间：2018-09-16 15:50:21
pcb guidelines
pcb guidelines Signal integrity is the analysis, design, and validation of the interconnect necessary for successful transmission of digital signals From signal theory we know that a series of sine waves can be used to recreate a recurring stream of pulses. In fact, a Fourier analysis can be used to find the amplitude and phase of each of the frequencies and determine how many are needed for reconstructing the pulses to the desired level of precision After doing this analysis, we find that there is a fundamental frequency that has the highest amplitude and possible harmonic frequencies with lesser amplitudes occurring at integer multiples of the fundamental frequency. The fundamental frequency fo is f0 = 1/T where T is the pulse period The harmonics with the amplitudes shown in the spectrogram can be added together to recreate the pulse stream. In theory an infinite number of harmonics may be necessary, but far fewer suffice in practice