EFFECTS OF COEFFICIENT INACCURACY IN SWITCHED-CAPACITOR TRANSVERSAL FILTERS

被引：19

作者：

PETRAGLIA, A

MITRA, SK

机构：

[1] Department of Electrical and Computer Engineering, University of California, Santa Barbara

[2] Department of Electrical and Computer Engineering, University of California, Santa Barbara

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS | 1991年 / 38卷 / 09期

关键词：

D O I：

10.1109/31.83869

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Coefficient inaccuracy effects in the frequency response of FIR switched-capacitor filters implemented in direct form are investigated. No assumption is made with respect to the filter coefficients, so that the results of the analysis are valid for both linear and nonlinear phase FIR filters. Assuming that the errors in the capacitor ratios realizing the tap coefficients are uncorrelated and have identical Gaussian distributions, an exact probability distribution function is derived for the error in the frequency response. It is shown that this distribution can be characterized by a Rayleigh distribution, which is then used to derive an upper bound for the expected stopband attenuation. Extensive simulation results are shown, as well, to give support to the analysis.

引用

页码：977 / 983

页数：7

共 30 条

[1]

ANDRISANO O, 1976, ALTA FREQ, V45, P739

[2] DESIGN AND OPERATION OF PRACTICAL CHARGE-TRANSFER TRANSVERSAL FILTERS [J].