An Investigation of Computer-Aided Analysis for Switched Capacitor Sampled-Data Filters

Two techniques are presented for computer-aided analysis of switched capacitor (SC) circuits. The first technique is based on partitioning the SC circuits into elementary subnetworks. This new approach is distinctly different from other analysis techniques, because rather than striving for complete generality, it incorporates features that are specifically needed in practical SC circuits in order to produce an efficient and compact formulation for machine programming and computation. The second technique is based on modified nodal analysis (MNA) approach. The advantage of this approach over the block partitioning approach is that it can be applied to more general circuits since no restriction is imposed on the circuit topology. However, due to the nature of the MNA approach, this technique is less efficient than the first technique. Nevertheless, reordering for efficient equation solving is addressed and an example is used to illustrate the results. For both techniques, equation formulations are developed for analyzing the time domain, frequency domain and sensitivity characteristics of the circuits. Two computer programs called SCAP and SCAPII implementing the proposed techniques are described. Numerous examples are presented to demonstrate the frequency and sensitivity results of the programs. A simulation study on the sensitivity properties of five different circuit topologies implementing the same filtering function is also presented.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Lee, Clement Fuk-Leung

• Engineering, Electronics and Electrical

Language dc:language

eng

Identifier

(UMI)AAI8127627

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/66252