Estimation of Aliasing Effects Due to Periodical Nonuniform Individual Sampling in High-Q Switched-Capacitor Filters

abstract

• The periodical nonuniform individual sampling scheme has been shown suitable for capacitance spread and total capacitor area reduction in high quality (Q) factor switched-capacitor (SC) filters. However, the use of periodical nonuniform clock signals results in additional aliasing components in the output spectrum. This paper presents a simple model to analyze the generation of such alias components and gives practical expressions to estimate their power. The results are verified through circuit simulation of a 10.7-MHz second-order SC bandpass filter in a 0.35-m CMOS technology. Implications on the use of this technique in the design of intermediate-frequency filters are discussed. 2007, IEEE. All rights reserved.

authors

• Silva-Martinez, Jose

published proceedings

• IEEE Transactions on Circuits & Systems II Express Briefs

author list (cited authors)

• Hernandez-Garduno, D., Silva-Martinez, J., & Ausn, J. L.

citation count

• 1

complete list of authors

• Hernandez-Garduno, David||Silva-Martinez, Jose||Ausín, José L

publication date

• May 2007

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Circuits and Systems - II - Express Briefs  Journal

Digital Object Identifier (DOI)

• 10.1109/tcsii.2006.890403

start page

• 387

end page

• 391

volume

• 54

issue

• 5

URL

• http://dx.doi.org/10.1109/tcsii.2006.890403