Steady-state small-signal analysis of switched-capacitor circuits

This paper presents a steady-state small-signal analysis method for nonlinear circuits. The method can be used to calculate the steady-state time domain representation as well as the frequency response of switched-capacitor circuits. Any nonideal models for switches can be used, i.e., all modeling levels of MOSFETs as switches including parasitic components can be simulated. The method proposed may be applied to mixer analysis for the case of a strong LO and a weak RF signal to calculate the steady-state solution, the spectrum, or the conversion gain. An example is given to demonstrate that the method proposed is efficient and sufficiently fast to simulate switched-capacitor circuits. The simulation results show good agreement with transient analysis.

[1]  Martti Valtonen,et al.  Steady-state time-domain analysis including frequency-dependent components , 1995 .

[2]  B. Nelin.  Analysis of switched-capacitor networks using general- purpose circuit simulation programs , 1983 .

[3]  Stephen A. Maas,et al.  Nonlinear microwave circuits , 1988 .

[4]  M. Liou,et al.  An equivalent circuit approach to the computer-aided analysis of switched capacitor circuits , 1979 .

[5]  Martti Valtonen,et al.  Small-signal analysis of nonideal switched-capacitor circuits , 1994, Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94.

[6]  Ji-an Gong,et al.  A switched-capacitor macromodel approach to the computer-aided analysis of switched-capacitor networks , 1989 .

[7]  Yannis Tsividis,et al.  State charge formulation of switched-capacitor networks containing nonlinear and time- varying elements , 1984 .

[8]  C. S. Lindquist,et al.  Analysis of Switched-Capacitor Networks ( SCN) Based on Capacitor-Switch Macromodels . , 1985 .

[9]  K. R. Whight.  Large signal periodic time-domain circuit simulation , 1994 .

[10]  A. Neri,et al.  State of the art and present trends in nonlinear microwave CAD techniques , 1988 .

[11]  Martti Valtonen,et al.  Small-signal harmonic analysis of non-linear circuits , 1995, Int. J. Circuit Theory Appl..

[12]  S. Egami.  Nonlinear, Linear Analysis and Computer-Aided Design of Resistive Mixers , 1974 .

[13]  Yannis Tsividis.  Analysis of switched capacitive networks , 1979 .

[14]  M.L. Liou,et al.  A tutorial on computer-aided analysis of switched-capacitor circuits , 1983, Proceedings of the IEEE.