Synthesis of switched-capacitor parametric bandpass filters

Author

Korotkov, A.S. ; Feistel, K.H. ; Unbehauen, R.

Author_Institution

Dept. of Electr. Eng., St. Petersburg State Tech. Univ., Russia

Volume

46

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

484

Lastpage

490

Abstract

A new approach to the synthesis of element simulation type bandpass switched-capacitor (SC) filters associated with parasitic capacitances is presented. The synthesis of a parametric bandpass LCR prototype is considered as a starting point of the method. The proposed approach allows one to design two-phase controlled SC filters with a low number of operational amplifiers. A predistortion technique is used for elimination of the influence of the parasitics on the circuit characteristics. A theoretical discussion as well as the results of computer simulation on a twelfth-order parametric bandpass SC filter is included

Keywords

band-pass filters; capacitance; circuit simulation; operational amplifiers; switched capacitor filters; LCR prototype; circuit characteristics; element simulation type; operational amplifiers; parasitic capacitances; predistortion technique; switched-capacitor parametric bandpass filters; two-phase controlled SC filters; Band pass filters; Circuit analysis; Circuit simulation; Circuit synthesis; Inductors; Operational amplifiers; Parasitic capacitance; Predistortion; Prototypes; Switches;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.754849

Filename

754849