Two-Port Analysis of Switched-Capacitor Networks Using Four-Port Equivalent C ircuits in the z-Domain

Abshc-In a preview publication by the authors it was shown how swhbed-capacitor (SC) networks can bc analyzed by using nodal charge qUatfons. The result was a description of SC networks as time-variant sampled-data networks which led to a four-port e4@valent circuit rep* sent&ion in tbe z-domain. In this paper, the four-port representation is expanded by considering six basic building blocks for the design of any general active or passive SC network. Witb the four-port equivalent circuit representatioq traditional two-port analysis took such as the transmision m&lx and two-port transfer functions, can be used conveniently. An SC-filter design example is given and the measured response is shown to coincide witb tbe response predicted by the theory.