Analysis of second-order harmonic distortion of ADC using bispectrum

Author

Gao, Xiao Ming ; Ovaska, Seppo J. ; Shenghe, Sun ; Jenq, Y.C.

Author_Institution

Dept. of Inf. Technol., Lappeenranta Univ. of Technol., Finland

Volume

45

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

50

Lastpage

55

Abstract

This paper presents a new frequency-domain approach to test the second-order harmonic distortion of an analog-to-digital converter (ADC). It uses triple correlation and its Fourier transform, bispectrum, to suppress quantization noise and improve the testing accuracy of weak second-order harmonics. Our approach is independent of the triggering delay that is a known weakness of the spectral averaging method. The new method is also less sensitive to the quantization noise than the power spectrum averaging method. Both theoretical analyses and illustrative computer simulations are provided

Keywords

analogue-digital conversion; digital simulation; discrete Fourier transforms; frequency-domain analysis; harmonic analysis; harmonic distortion; ADC; Fourier transform; analog-to-digital converter; bispectrum; computer simulation; frequency-domain analysis; quantization noise; second-order harmonic distortion; second-order harmonics; spectral averaging; testing accuracy; triggering delay; triple correlation; Discrete Fourier transforms; Distortion measurement; Fourier transforms; Harmonic analysis; Harmonic distortion; Power harmonic filters; Quantization; Signal to noise ratio; Spectral analysis; Testing;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.481311

Filename

481311