Title :
Linear-phase filters configured as a combination of sigma-delta modulator, SC transversal filter and a low-Q biquad
Author_Institution :
Integrated Syst. Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
The combination of a Σ-Δ modulator-based finite impulse response (FIR) filter and a low-Q biquad is shown to be capable of achieving similar specifications to those of a pure FIR filter several times longer if both are implemented in analog form and therefore suffer from imperfect coefficient-matching. The proposed hybrid filter provides a cost-effective way of implementing linear-phase filters in analog form
Keywords :
FIR filters; biquadratic filters; delay circuits; digital filters; sigma-delta modulation; switched capacitor filters; SC transversal filter; analog form; finite impulse response; hybrid filter; linear-phase filters; low-Q biquad; sigma-delta modulator; Adders; Capacitance; Circuits; Delay; Delta-sigma modulation; Finite impulse response filter; IIR filters; Resonant frequency; Silicon; Transversal filters;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393970
