An accurate automatic tuning scheme for high-Q continuous-time bandpass filters based on amplitude comparison

被引：20

作者：

Liu, HS ^{[1
]}

Karsilayan, AI ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING | 2003年 / 50卷 / 08期

关键词：

automatic tuning; bandpass filters; CMOS analog integrated circuits; continuous-time filters; CMOS; RANGE;

D O I：

10.1109/TCSII.2003.814802

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 new automatic tuning scheme for continuous-time high-Q-bandpass filters is presented. It is conducted by amplitude comparison at three frequencies generated by an on-chip frequency synthesizer. Theoretical analysis and experimental results are provided. Analysis shows the tuning method is suitable for bandpass filters with Q > 10. A g(m) - C second-order filter is designed to demonstrate the proposed tuning scheme. The test chip is fabricated in AMI 0.5-mum process. The measured frequency tuning error is 0.25%, and Q-tuning error is 3% for a 200-MHz filter with a desired Q of 28.6.

引用

页码：415 / 423

页数：9

共 14 条

[11] DESIGN OF A 4-MHZ ANALOG INTEGRATED CMOS TRANSCONDUCTANCE-C BANDPASS FILTER [J].

PARK, CS ;

SCHAUMANN, R .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1988, 23 (04) :987-996

[12] A CMOS continuous-time bandpass filter with peak-detection-based automatic tuning [J].

Parker, JF ;

Current, KW .

INTERNATIONAL JOURNAL OF ELECTRONICS, 1996, 81 (05) :551-564

[13] A 10.7-MHZ 68-DB SNR CMOS CONTINUOUS-TIME FILTER WITH ON-CHIP AUTOMATIC TUNING [J].

SILVAMARTINEZ, J ;

STEYAERT, MSJ ;

SANSEN, W .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1992, 27 (12) :1843-1853

[14] An accurate quality factor tuning scheme for IF and high-Q continuous-time filters [J].

Stevenson, JM ;

Sanchez-Sinencio, E .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1998, 33 (12) :1970-1978

← 1 2 →