Analysis of general switched-capacitor networks using indefinite admittance matrix

In a previous publication it was shown how switched-capacitor (s.c.) networks can be analysed using nodal-charge equations. The result was a description of s.c. networks as time-variant sampled-data networks that led to a 4-port equivalent-circuit representation in the Z-domain. The 4-port representation has been expanded by considering six basic building blocks for the design of a general passive or active s.c. network. In this paper, an indefinite admittance matrix (i.a.m.) method for the analysis of s.c. networks is proposed which uses the 4-terminal admittance matrix of a capacitor in the s.c. network. An algorithm and examples of the proposed method are given.