Title :
A design strategy for area efficient high-order high-Q SC filters
Author :
Ausín, J.L. ; Duque-Carillo, J.F. ; Torelli, G. ; Domínguez, M.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Extremadura Univ., Badajoz, Spain
Abstract :
A reuse approach to the design of switched-capacitor (SC) filtering applications is presented. The proposed method utilizes a non-uniform sampling scheme, which adds one degree of freedom in determining the frequency response parameters of SC circuits. In addition, capacitors spread and total capacitor area is reduced, and only a minor complexity increase is needed to generate the operating clock phase. As a result, fully functional designs can be obtained for analog-module reuse scenarios. The feasibility of the presented approach has been validated through the design and the experimental evaluation of a high-Q SC bandpass filter for radio data system application.
Keywords :
Q-factor; band-pass filters; capacitors; circuit complexity; frequency response; radio data systems; switched capacitor filters; analog-module reuse; area efficient SC filters; bandpass filter; capacitor area reduction; capacitors spread; clock phase; design strategy; frequency response parameters; functional designs; high-Q SC filters; high-order SC filters; nonuniform sampling; radio data system; reuse approach; switched-capacitor filtering; Band pass filters; Capacitors; Circuits; Clocks; Data systems; Design methodology; Filtering; Frequency response; Sampling methods; Transfer functions;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328137
