A Method for Calculating Total Harmonic Distortion of Digital Sinusoidal Waveform

Author

Min, Liu ; Yalu, Li

Author_Institution

Chinese Acad. of Space Technol., Beijing

fYear

2007

Abstract

A digital sinusoidal waveform is defined as a periodic waveform whose amplitude and time can be quantified. How do the bit number N of digital-to-analog converter (DAC) and the number M of discrete points in one period influence the total harmonic distortion (THD) of the sinusoidal wave synthesized by digital waveforms? We propose in this paper a theoretical formula representing the relation of THD, M and N on the basis of time-domain analysis and give the calculation results and the experimental data. The novel method presented in this paper can also be applied to harmonic analysis.

Keywords

digital-analogue conversion; harmonic distortion; time-domain analysis; DAC; THD; digital sinusoidal waveform; digital-to-analog converter; periodic waveform; time-domain analysis; total harmonic distortion; Circuit testing; Distortion measurement; Electronic equipment testing; Instruments; Postal services; Signal synthesis; Space technology; Time domain analysis; Time measurement; Total harmonic distortion; Digital Waveform; Digital Waveform Synthesis; Total Harmonic Distortion (THD); the sinusoidal wave;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-1136-8

Electronic_ISBN

978-1-4244-1136-8

Type

conf

DOI

10.1109/ICEMI.2007.4351075

Filename

4351075