Approximating linear phase with IIR SC filters

It has been recently shown that linear phase can be efficiently approximated by an IIR SC filter structure realizing denominator order smaller than the numerator order. This paper compares such an approach to phase equalized cascade and ladder structures implementing elliptic approximations, and to the conventional linear-phase FIR designs. Comparative measures include power dissipation, capacitance spread, total capacitor area, and sensitivity to process variations regarding capacitance ratios.

[1]  K. Anvari,et al.  Performance of a direct conversion receiver with pi /4-DQPSK modulated signal , 1991, [1991 Proceedings] 41st IEEE Vehicular Technology Conference.

[2]  A.H.M. van Roermund,et al.  A 10.7-MHz CMOS SC radio IF filter using orthogonal hardware modulation , 2000, IEEE Journal of Solid-State Circuits.

[4]  Un-Ku Moon.  CMOS high-frequency switched-capacitor filters for telecommunication applications , 2000, IEEE Journal of Solid-State Circuits.

[5]  A. Petraglia.  Fundamental frequency response bounds of direct-form recursive switched-capacitor filters with capacitance mismatch , 2001 .

[6]  J. L. Dunkley,et al.  Systematic capacitance matching errors and corrective layout procedures , 1994 .

[7]  Leland B. Jackson.  An improved Martinet/Parks algorithm for IIR design with unequal numbers of poles and zeros , 1994, IEEE Trans. Signal Process..

[8]  Jacques C. Rudell,et al.  A 1.9-GHz wide-band IF double conversion CMOS receiver for cordless telephone applications , 1997, IEEE J. Solid State Circuits.

[9]  S. Mitra,et al.  Effects of coefficient inaccuracy in switched-capacitor transversal filters , 1991 .

[10]  Antonio Petraglia,et al.  Low-sensitivity direct-form IIR SC filters with improved phase linearity , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[11]  Gabor C. Temes,et al.  Narrow-band switched-capacitor bandpass filters , 1982 .

[12]  P. Fleischer,et al.  A family of active switched capacitor biquad building blocks , 1979, The Bell System Technical Journal.

[13]  S. Mattisson,et al.  Bluetooth-a new low-power radio interface providing short-range connectivity , 2000, Proceedings of the IEEE.