Title :
A capacitor-area efficient realization of sigma-delta modulator-based FIR/IIR analog linear-phase filters
Author_Institution :
Integrated Syst. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
The combination of a Σ-Δ modulator-based FIR filter and a low-Q biquad has been shown to be an effective way of implementing linear-phase filters in analog form. A remaining problem of large integrating capacitors due to both oversampling and a large number of FIR filter taps is solved here with a capacitor-area efficient implementation, without heavy penalties of increased offset and noise
Keywords :
FIR filters; IIR filters; biquadratic filters; delay circuits; sigma-delta modulation; FIR/IIR analog linear-phase filter; capacitor-area efficiency; low-Q biquad; oversampling; sigma-delta modulator; Attenuation; Band pass filters; Capacitors; Circuits; Delay lines; Delta-sigma modulation; Finite impulse response filter; IIR filters; Resonant frequency; Silicon;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.539810
