tailieunhanh - Báo cáo hóa học: " Research Article Achievable ADC Performance by Postcorrection Utilizing Dynamic Modeling of the Integral Nonlinearity"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Achievable ADC Performance by Postcorrection Utilizing Dynamic Modeling of the Integral Nonlinearity | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2008 Article ID 497187 10 pages doi 2008 497187 Research Article Achievable ADC Performance by Postcorrection Utilizing Dynamic Modeling of the Integral Nonlinearity Niclas Bjorsell1 and Peter Handel2 1 ITB Electronics University ofGiivle 801 76 Gavle Sweden 2 Signal Processing Lab. ACCESS Linnaeus Center School of Electrical Engineering Royal Institute of Technology 100 44 Stockholm Sweden Correspondence should be addressed to Niclas Bjorsell Received 1 May 2007 Revised 24 September 2007 Accepted 19 December 2007 Recommended by Boris Murmann There is a need for a universal dynamic model of analog-to-digital converters ADC s aimed for postcorrection. However it is complicated to fully describe the properties of an ADC by a single model. An alternative is to split up the ADC model in different components where each component has unique properties. In this paper a model based on three components is used and a performance analysis for each component is presented. Each component can be postcorrected individually and by the method that best suits the application. The purpose of postcorrection of an ADC is to improve the performance. Hence for each component expressions for the potential improvement have been developed. The measures of performance are total harmonic distortion THD and signal to noise and distortion SINAD and to some extent spurious-free dynamic range SFDR . Copyright 2008 N. Bjorsell and P. Handel. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The analog to digital converter ADC is a key component in many applications for example radio base stations and test and measurement instruments. In state-of-the-art designed vector signal analyzers VSAs the ADC is the .