Design and applications of single-path frequency-translated switched-capacitor systems

Author

Franca, Jose Epifanio Da ; Haigh, David G.

Author_Institution

Imperial Coll. of Sci. & Technol., London, UK

Volume

35

Issue

4

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

394

Lastpage

408

Abstract

Single-path frequency-translated (SPFT) switched-capacitor (SC) systems have been previously proposed for the realization of highly selective bandpass filters with relative bandwidths below 1%. After examining in more generality the design constraints of such SPFT SC systems, novel solutions for the implementation of the decimator and interpolator architectures using an efficient combination of finite-impulse response, and infinite-impulse response SC circuits are presented. Several areas of application of SPFT SC systems, namely for filtering with programmable Q-factor and for single-sideband generation and detection are demonstrated. Detailed measured results, both in the frequency domain and in the time domain, are presented to illustrate the viability and performance of SPFT SC systems with the various operating modes

Keywords

Q-factor; band-pass filters; interpolation; switched capacitor filters; SC circuits; SSB detection; active filters; decimator; finite-impulse response; frequency domain; frequency-translated; highly selective bandpass filters; infinite-impulse response; interpolator architectures; programmable Q-factor; single-path; single-sideband generation; switched-capacitor systems; time domain; Band pass filters; Bandwidth; Capacitors; Circuits; Filtering; Finite impulse response filter; Frequency domain analysis; Frequency measurement; IIR filters; Signal design;

fLanguage

English

Journal_Title

Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0098-4094

Type

jour

DOI

10.1109/31.1754

Filename

1754