A novel Q-tuning scheme for continuous time filters

被引：2

作者：

Salmeh, R ^{[1
]}

Maundy, B ^{[1
]}

机构：

[1] Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada

来源：

INTERNATIONAL JOURNAL OF ELECTRONICS | 2002年 / 89卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

The ahus wooultdrlike to acknowledge the support of the NtaulaSciernces and Enineeringg Research Council (NSERC) of Cana aand dthe Canaan Networdkiof Centers of Excellence in Microelectronics (MICRONET);

D O I：

10.1080/00207210210160945

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：

A quality-factor-tuning scheme for analogue lowpass or highpass continuous time filters is presented. The proposed method uses the LMS algorithm to simultaneously adapt the quality factor of a desired filter and the phase shift of an allpass filter. Simulation results confirm the validity of the technique for both Q and phase shift tuning. An experimental setup of a circuit using discrete components shows that an error in Q of 1.7% at a desired Q of 0.68 is possible and that the scheme is adaptive to changes in input amplitude and frequency.

引用

页码：477 / 491

页数：15

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