An Investigation of Computer-Aided Analysis for Switched Capacitor Sampled-Data Filters
Lee, Clement Fuk-Leung
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https://hdl.handle.net/2142/66252
Description
Title
An Investigation of Computer-Aided Analysis for Switched Capacitor Sampled-Data Filters
Author(s)
Lee, Clement Fuk-Leung
Issue Date
1981
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Language
eng
Abstract
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.
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