Journal ArticleDOI
Design of feed-forward ΣΔ interface for MEMS based accelerometers
Wenquan Liang,Changchun Yang,Donghai Qiao +2 more
- Vol. 72, Iss: 1, pp 3-10
Reads0
Chats0
TLDR
In this paper, a systematic method for the design of feed forward ΣΔ interfaces is proposed, and simulations show that the utilizing the proposed method, feed forward method and the traditional multiple feedback structures have almost the same peak SQNRs when a compensator pole is added to the feed forward structure.Abstract:
High order ΣΔ interface is a practical choice for high resolution MEMS sensors. Previous researches are mainly about the determination of the coefficients of multiple feedback ΣΔ interfaces. In the work presented here, a systematic method for the design of feed forward ΣΔ interface is proposed. Simulations show that the utilizing the proposed method, feed forward method and the traditional multiple feedback structures have almost the same peak SQNRs when a compensator pole is added to the feed forward structure. However, feed forward structure has many advantages, so the proposed method is a promising alternative method for the multiple feedback structure.read more
Citations
More filters
Journal ArticleDOI
A design of order-adjustable Σ∆ modulator for high performance micro-machined accelerometers
TL;DR: In this article, the authors proposed an order-adjustable micro-machined accelerometer that employs a mechanical sensor to balance the proof mass, and a fifth order MEMS accelerator to measure the acceleration with high resolution.
Journal ArticleDOI
Modeling and test result of closed-loop MEMS accelerometer with wide dynamic range
TL;DR: In this paper, an effective way for design of feed-forward sigma-delta for MEMS acceleration sensor is proposed, which shows an optimized parameters design with signal to noise ration (SNR) of 148 dB and its experimental result can reach 142 dB.
A Novel Hybrid Continuous Time / Discrete Time Multi Stage Noise Shaping Structure Dedicated to MEMS Based Accelerometer
TL;DR: In this article, a hybrid CT/DT delta sigma interface for micro electro mechanical accelerometer, which is located in the negative feedback, is presented, where the accelerometer with natural continuous time property is considered as the first stage of the modulator while a discrete time integrator is used as the second stage to take the advantages of CT and DT delta sigmoid sigma simultaneously.
Proceedings ArticleDOI
Design optimization and simulation of a fifth-order sigma-delta micro-accelerometer system
Meimei Zhang,Haiyang Quan +1 more
TL;DR: This paper presents a systematic methodology to determine the optimal coefficients of EMSDM systems rapidly, which can solve the above two problems and demonstrates the effectiveness of the approach.
Proceedings ArticleDOI
System-level modeling and analysis of third order MEMS accelerometer
Xiangliang Jin,Feng Zhang +1 more
TL;DR: An effective way for design of feed-forward sigma-delta for MEMS acceleration sensor is proposed and an optimized parameters design with signal to noise ration (SNR) of 130dB and its experimental result can reach 125dB.
References
More filters
Book
Understanding Delta-Sigma Data Converters
TL;DR: This chapter discusses the design and simulation of delta-sigma modulator systems, and some of the considerations for implementation considerations for [Delta][Sigma] ADCs.
Journal ArticleDOI
Sigma-Delta Modulators: Tutorial Overview, Design Guide, and State-of-the-Art Survey
TL;DR: A review of the state of the art on nanometer CMOS implementations is described, giving a survey of cutting-edge ΣΔ architectures, with emphasis on their application to the next generation of wireless telecom systems.
Book
Continuous-Time Sigma-Delta Modulation for IF A/D Conversion in Radio Receivers
TL;DR: This paper describes the development of an IF-to-baseband sigma-delta modulator and its application in radio receivers, and describes the construction of a quadrature version of this modulator.
Journal ArticleDOI
Higher Order Noise-Shaping Filters for High-Performance Micromachined Accelerometers
TL;DR: Topologies for higher order single-loop electromechanical SigmaDeltaM with optimal stable coefficients that lead to a better SQNR are presented, which have good immunity to fabrication tolerances, which was verified by Monte Carlo analysis.