Earticle

초록

영어

A 4th-Order Wideband Sigma Delta modulator structure is proposed in this paper, which uses linear system theory technique. There are many implementation techniques to improve the performance of Sigma Delta ADCs, such as noise coupling, differential sampling and dynamic elements matching. An extra loop delay is needed to be added in the system. This paper explains how to make the modulator stable with the addition of feed-forward and feed-back branches which are used to compensate the extra loop delay. Next, we restore the signal and noise transfer functions. A 4th-Order Wideband delta-sigma modulator have been designed and simulated to verify the method.

목차

Abstract
 1. Introduction
 2. Proposed Technique to Compensate the Introducing the Extra Delay
 3. Procedure of the Loop Filter Design and Implementation of the Proposed Structure
  3.1. Procedure of the Loop Filter Design
  3.2. Implementation of the Proposed Structure
 4. The Simulation of the Proposed MATLAB Model
 5. Conclusions
 References

키워드

저자

• Ming-yuan Ren [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Yong-sheng Zhang [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Wei-kun Wu [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Zhen-xi Bao [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Zi-wei Zhao [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Chao Li [ School of Software,Harbin University of Science and Technology, Harbin, China ]
• Hong-guo Zhang [ School of Software,Harbin University of Science and Technology, Harbin, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605